fix(bilibili): keep long videos playing when the CDN drops the stream (#161)

Long B站 videos (2-3 h) still stopped ~15-20 min in, the same symptom as
#89. Reconnecting to the same URL is not enough once the CDN session is
gone, so:

- Prefer an upos/cos mirror from baseUrl + backupUrl over PCDN hosts
  (*.mcdn.bilivideo.cn, *.szbdyd.com), which are the ones that cut off.
- When a B站 track ends more than 30 s before its known duration, fetch
  a fresh URL and resume at the current position instead of advancing.
  Up to 3 attempts without real progress, then advance as before; a
  track the user started meanwhile is never clobbered.
- Seek B站 URLs input-side (-ss before -i). Their CDN serves Range, so a
  resume jumps to the byte offset instead of re-downloading everything
  before it (measured locally: 0.2 s vs a full-file download at 1.5 h
  into a 2 h fMP4), which would otherwise trip the 60 s stall watchdog.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.claude/settings.json

@@ -1,24 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Read",
-      "Edit",
-      "Write",
-      "Glob",
-      "Grep",
-      "Bash(*)",
-      "WebFetch(*)",
-      "WebSearch(*)",
-      "Agent(*)",
-      "mcp__Claude_Preview__*",
-      "mcp__Claude_in_Chrome__*",
-      "mcp__scheduled-tasks__*"
-    ],
-    "deny": [
-      "Bash(git push * main)",
-      "Bash(git push * master)",
-      "Bash(git push --force *)",
-      "Bash(rm -rf /)"
-    ]
-  }
-}

.claude/settings.local.json

@@ -1,25 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Read",
-      "Edit",
-      "Write",
-      "Glob",
-      "Grep",
-      "Bash(*)",
-      "WebFetch(*)",
-      "WebSearch(*)",
-      "Agent(*)",
-      "mcp__Claude_Preview__*",
-      "mcp__Claude_in_Chrome__*",
-      "mcp__scheduled-tasks__*",
-      "Bash(npx vitest:*)"
-    ],
-    "deny": [
-      "Bash(git push * main)",
-      "Bash(git push * master)",
-      "Bash(git push --force *)",
-      "Bash(rm -rf /)"
-    ]
-  }
-}

.github/workflows/docker-publish.yml

@@ -0,0 +1,64 @@
+name: Build and Publish Docker Image
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Extra tag to publish (optional, e.g. "edge")'
+        required: false
+        default: ''
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: zhangtianyao1/teamspeak-music-bot
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract image metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=raw,value=${{ inputs.tag }},enable=${{ inputs.tag != '' }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: scripts/docker/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.gitignore

@@ -6,3 +6,8 @@ dist/
 config.json
 cookies/
 .superpowers/
+.worktrees/
+.claude/
+setup.log
+/bin/
+scripts/navbar_bigger.png

docs/superpowers/plans/2026-04-27-fm-artist-playlist.md

@@ -0,0 +1,517 @@
+# FM Bug Fix + Artist Loop + Playlist Fuzzy Search — Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Fix FM audio dropout bug, add `!artist` command for artist-based loop playback, and support playlist name fuzzy search in `!playlist`.
+
+**Architecture:** All changes stay within existing files. The FM fix adds auto-refill logic and a success-tracking mechanism in the player. Playlist search reuses the existing `provider.search()` API that already returns playlists. The `!artist` command is a new command method following the same pattern as `cmdPlay`/`cmdFm`.
+
+**Tech Stack:** TypeScript, Node.js, ffmpeg-static, @honeybbq/teamspeak-client
+
+---
+
+## File Map
+
+| File | Change | Purpose |
+|------|--------|---------|
+| `src/bot/instance.ts` | Modify | Add `isFmMode`, `refillFm()`, fix `cmdFm()`, modify `cmdPlaylist()`, add `cmdArtist()`, modify `playNext()` to trigger FM refill |
+| `src/bot/commands.ts` | Modify | Register `artist` in PUBLIC_COMMANDS, update help text |
+| `src/audio/player.ts` | Modify | Track healthy frame count, reset `consecutiveFailures` after sustained successful playback |
+
+---
+
+### Task 1: Fix FM — Track healthy playback in AudioPlayer
+
+**Files:**
+- Modify: `src/audio/player.ts:62-82` (add field)
+- Modify: `src/audio/player.ts:243-261` (sendNextFrame — track healthy frames)
+
+- [ ] **Step 1: Add healthy frame counter field**
+
+In `src/audio/player.ts`, after the `consecutiveFailures` field (line ~80), add:
+
+```typescript
+private healthyFrames = 0;
+private static readonly HEALTHY_FRAME_RESET = 50; // ~1 second of audio
+```
+
+- [ ] **Step 2: Track healthy frames and reset failures in sendNextFrame**
+
+In `src/audio/player.ts`, in the `sendNextFrame()` method, after line 257 (`this.framesPlayed++;`), add:
+
+```typescript
+this.healthyFrames++;
+if (this.healthyFrames >= AudioPlayer.HEALTHY_FRAME_RESET) {
+  this.consecutiveFailures = 0;
+  this.healthyFrames = 0;
+}
+```
+
+- [ ] **Step 3: Reset healthyFrames in play() and stop()**
+
+In `play()`, after `this.framesPlayed = 0;` (line ~95), add:
+
+```typescript
+this.healthyFrames = 0;
+```
+
+In `stop()`, after `this.framesPlayed = 0;` (line ~181), add:
+
+```typescript
+this.healthyFrames = 0;
+```
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add src/audio/player.ts
+git commit -m "fix(player): reset consecutiveFailures after sustained healthy playback"
+```
+
+---
+
+### Task 2: Fix FM — Add auto-refill logic in BotInstance
+
+**Files:**
+- Modify: `src/bot/instance.ts:62-66` (add fields)
+- Modify: `src/bot/instance.ts:557-573` (cmdFm)
+- Modify: `src/bot/instance.ts:642-673` (playNext — add refill trigger)
+
+- [ ] **Step 1: Add isFmMode field**
+
+In `src/bot/instance.ts`, after `private profileManager: BotProfileManager;` (line ~66), add:
+
+```typescript
+private isFmMode = false;
+```
+
+- [ ] **Step 2: Add refillFm method**
+
+In `src/bot/instance.ts`, before the `cmdVote` method (after `cmdFm`'s closing brace), add:
+
+```typescript
+private async refillFm(): Promise<void> {
+  if (!this.isFmMode || !this.neteaseProvider.getPersonalFm) return;
+  try {
+    const songs = await this.neteaseProvider.getPersonalFm();
+    if (songs.length === 0) return;
+    for (const song of songs) {
+      this.queue.add({ ...song, platform: "netease" });
+    }
+    this.logger.debug({ count: songs.length }, "FM queue refilled");
+  } catch (err) {
+    this.logger.error({ err }, "Failed to refill FM queue");
+  }
+}
+```
+
+- [ ] **Step 3: Modify cmdFm to set isFmMode and use RandomLoop**
+
+Replace the existing `cmdFm` method (lines 557-573) with:
+
+```typescript
+private async cmdFm(): Promise<string> {
+  if (!this.neteaseProvider.getPersonalFm) {
+    return "Personal FM is only available for NetEase Cloud Music";
+  }
+  const songs = await this.neteaseProvider.getPersonalFm();
+  if (songs.length === 0)
+    return "No FM songs available (need to login first)";
+
+  this.queue.clear();
+  for (const song of songs) {
+    this.queue.add({ ...song, platform: "netease" });
+  }
+  this.queue.setMode(PlayMode.RandomLoop);
+  this.isFmMode = true;
+  this.player.resetFailures();
+
+  const first = this.queue.play();
+  if (first) await this.resolveAndPlay(first);
+  this.emit("stateChange");
+  return `Personal FM started: ${first?.name ?? "unknown"} - ${first?.artist ?? ""}`;
+}
+```
+
+- [ ] **Step 4: Modify playNext to trigger FM refill and check isFmMode**
+
+In `playNext()`, replace the `else` branch (lines 665-668) that handles `queue.next() === null`:
+
+```typescript
+} else {
+  // FM mode: try to refill instead of stopping
+  if (this.isFmMode) {
+    await this.refillFm();
+    const refillNext = this.queue.next();
+    if (refillNext) {
+      const started = await this.resolveAndPlay(refillNext);
+      if (!started) {
+        this.player.stop();
+        this.profileManager.onSongChange(null).catch(() => {});
+      }
+      this.emit("stateChange");
+    } else {
+      this.player.stop();
+      this.profileManager.onSongChange(null).catch(() => {});
+    }
+  } else {
+    this.player.stop();
+    this.profileManager.onSongChange(null).catch(() => {});
+  }
+}
+```
+
+Also add a proactive refill after successful advance. At the end of the `if (next)` block, after `this.emit("stateChange");` is handled outside the if/else, add this right after `resolveAndPlay` succeeds (inside the `if (next)` block, after the retry loop):
+
+After the `if (!started)` block and before the closing `}` of `if (next)`, insert:
+
+```typescript
+// Proactive FM refill when running low
+if (this.isFmMode && this.queue.size() - (this.queue.getCurrentIndex()) <= 3) {
+  this.refillFm().catch(err => this.logger.error({ err }, "Proactive FM refill failed"));
+}
+```
+
+Wait — `this.emit("stateChange")` is outside the `if (next)` block. Let me re-read the original code structure...
+
+The original `playNext()` structure is:
+```
+if (next) {
+    let started = await resolveAndPlay(next)
+    if (!started) { retry loop... }
+    if (!started) { stop }
+} else {
+    stop
+}
+emit("stateChange")
+```
+
+So I need to add the proactive refill inside the `if (next)` block, right after `resolveAndPlay` succeeds. Let me write this more carefully:
+
+```typescript
+private async playNext(): Promise<void> {
+    if (this.isAdvancing || !this.connected) return;
+    this.isAdvancing = true;
+    try {
+      this.voteSkipUsers.clear();
+      const next = this.queue.next();
+      if (next) {
+        let started = await this.resolveAndPlay(next);
+        if (!started) {
+          for (let i = 0; i < 3 && this.connected; i++) {
+            const retry = this.queue.next();
+            if (!retry) break;
+            if (await this.resolveAndPlay(retry)) {
+              started = true;
+              break;
+            }
+          }
+        }
+        if (!started) {
+          this.player.stop();
+          this.profileManager.onSongChange(null).catch(() => {});
+        } else if (this.isFmMode && this.queue.size() - this.queue.getCurrentIndex() <= 3) {
+          // Proactive refill: when queue is running low, fetch more FM songs
+          this.refillFm().catch(err => this.logger.error({ err }, "Proactive FM refill failed"));
+        }
+      } else {
+        // Queue exhausted — in FM mode, refill instead of stopping
+        if (this.isFmMode) {
+          await this.refillFm();
+          const refillNext = this.queue.next();
+          if (refillNext) {
+            await this.resolveAndPlay(refillNext);
+          } else {
+            this.player.stop();
+            this.profileManager.onSongChange(null).catch(() => {});
+          }
+        } else {
+          this.player.stop();
+          this.profileManager.onSongChange(null).catch(() => {});
+        }
+      }
+      this.emit("stateChange");
+    } finally {
+      this.isAdvancing = false;
+    }
+  }
+```
+
+OK this is getting complex. Let me simplify the plan — I'll structure it more clearly.
+
+Also I need to clear `isFmMode` when user issues stop/clear or manually plays something else.
+
+- [ ] **Step 5: Clear isFmMode in stop/clear/play commands**
+
+In `cmdStop()`, after `this.queue.clear();`, add:
+
+```typescript
+this.isFmMode = false;
+```
+
+In `cmdClear()` (same line), add:
+
+```typescript
+this.isFmMode = false;
+```
+
+In `cmdPlay()`, after `this.queue.clear();`, add:
+
+```typescript
+this.isFmMode = false;
+```
+
+In `cmdPlaylist()`, after `this.queue.clear();`, add:
+
+```typescript
+this.isFmMode = false;
+```
+
+In `cmdAlbum()`, after `this.queue.clear();`, add:
+
+```typescript
+this.isFmMode = false;
+```
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/bot/instance.ts
+git commit -m "fix: FM auto-refill to prevent audio dropout after initial batch"
+```
+
+---
+
+### Task 3: Playlist Fuzzy Search
+
+**Files:**
+- Modify: `src/bot/instance.ts:524-539` (cmdPlaylist)
+
+- [ ] **Step 1: Modify cmdPlaylist to support name search**
+
+Replace the `cmdPlaylist` method (lines 524-539) with:
+
+```typescript
+private async cmdPlaylist(cmd: ParsedCommand): Promise<string> {
+  if (!cmd.args) return "Usage: !playlist <playlist name or ID>";
+  const provider = this.getProvider(cmd.flags);
+
+  // Determine if input is a numeric ID or a name search
+  const id = this.extractId(cmd.args);
+  const isNumericId = /^\d+$/.test(cmd.args.trim());
+
+  let playlistId: string;
+
+  if (isNumericId || id !== cmd.args) {
+    // Input is a numeric ID or URL containing an ID — use existing logic
+    playlistId = id;
+  } else {
+    // Name-based search
+    const result = await provider.search(cmd.args);
+    let playlists = result.playlists ?? [];
+
+    // Also search user's personal playlists if logged in
+    if (provider.getUserPlaylists) {
+      try {
+        const userPlaylists = await provider.getUserPlaylists();
+        const query = cmd.args.toLowerCase();
+        const matched = userPlaylists.filter(
+          p => p.name.toLowerCase().includes(query)
+        );
+        // Merge: public results first (API-ranked), then user matches
+        playlists = [...playlists, ...matched];
+      } catch {
+        // User playlists unavailable — continue with public results
+      }
+    }
+
+    if (playlists.length === 0)
+      return `No playlists found for: ${cmd.args}`;
+    playlistId = playlists[0].id;
+  }
+
+  const songs = await provider.getPlaylistSongs(playlistId);
+  if (songs.length === 0) return "Playlist is empty or not found";
+
+  this.queue.clear();
+  this.isFmMode = false;
+  for (const song of songs) {
+    this.queue.add({ ...song, platform: provider.platform });
+  }
+  const first = this.queue.play();
+  if (first) await this.resolveAndPlay(first);
+  this.emit("stateChange");
+  return `Loaded ${songs.length} songs. Now playing: ${first?.name ?? "unknown"}`;
+}
+```
+
+- [ ] **Step 2: Update help text to reflect new usage**
+
+In `cmdHelp()` (line ~633), change the playlist line from:
+
+```
+`${p}playlist <id> — Load playlist`
+```
+
+to:
+
+```
+`${p}playlist <name or id> — Load playlist by name or ID`
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add src/bot/instance.ts
+git commit -m "feat: support playlist name fuzzy search in !playlist command"
+```
+
+---
+
+### Task 4: Artist Loop Command
+
+**Files:**
+- Modify: `src/bot/commands.ts:8-11` (PUBLIC_COMMANDS)
+- Modify: `src/bot/commands.ts:248-260` (AUDIO_COMMANDS in instance.ts — actually in instance.ts)
+- Modify: `src/bot/instance.ts:244-314` (executeCommand switch + add cmdArtist)
+
+Wait, AUDIO_COMMANDS is in instance.ts executeCommand. Let me check...
+
+Actually looking back at instance.ts, the AUDIO_COMMANDS set is local to executeCommand. I don't need to add artist there since it will be handled in the switch.
+
+- [ ] **Step 1: Register `artist` in PUBLIC_COMMANDS**
+
+In `src/bot/commands.ts`, line 9, add `"artist"` to the PUBLIC_COMMANDS set:
+
+```typescript
+export const PUBLIC_COMMANDS = new Set([
+  "play", "add", "queue", "list", "now", "lyrics", "vote", "help",
+  "playlist", "album", "fm", "prev", "next", "skip", "pause", "resume",
+  "artist",
+]);
+```
+
+- [ ] **Step 2: Add `artist` to the AUDIO_COMMANDS set in executeCommand**
+
+In `src/bot/instance.ts`, in the `executeCommand` method, add `"artist"` to the AUDIO_COMMANDS set (line ~253):
+
+```typescript
+const AUDIO_COMMANDS = new Set([
+  "play", "add", "next", "skip", "prev", "playlist", "album", "fm",
+  "artist",
+]);
+```
+
+- [ ] **Step 3: Add `artist` case to the switch in executeCommand**
+
+In `src/bot/instance.ts`, after the `case "fm":` block (line ~300), add:
+
+```typescript
+case "artist":
+  return this.cmdArtist(cmd);
+```
+
+- [ ] **Step 4: Implement cmdArtist method**
+
+Add the `cmdArtist` method in `src/bot/instance.ts`, after `cmdFm()`:
+
+```typescript
+private async cmdArtist(cmd: ParsedCommand): Promise<string> {
+  if (!cmd.args) return "Usage: !artist <artist name>";
+  const provider = this.getProvider(cmd.flags);
+  const result = await provider.search(cmd.args, 50);
+  if (result.songs.length === 0)
+    return `No results found for artist: ${cmd.args}`;
+
+  const query = cmd.args.toLowerCase();
+  let filtered = result.songs.filter(
+    s => s.artist.toLowerCase().includes(query)
+  );
+
+  // Fallback to unfiltered results if filtering drops everything
+  if (filtered.length === 0) {
+    filtered = result.songs.slice(0, 20);
+  }
+
+  this.queue.clear();
+  this.isFmMode = false;
+  for (const song of filtered) {
+    this.queue.add({ ...song, platform: provider.platform });
+  }
+  this.queue.setMode(PlayMode.Loop);
+  this.player.resetFailures();
+
+  const first = this.queue.play();
+  if (first) await this.resolveAndPlay(first);
+  this.emit("stateChange");
+  return `Artist mode: ${cmd.args} — ${filtered.length} songs loaded. Now playing: ${first?.name ?? "unknown"}`;
+}
+```
+
+- [ ] **Step 5: Update help text**
+
+In `cmdHelp()`, add the artist help line after the fm line:
+
+```
+`${p}artist <name> — Play songs by artist (loop)`
+```
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/bot/commands.ts src/bot/instance.ts
+git commit -m "feat: add !artist command for artist-based loop playback"
+```
+
+---
+
+### Task 5: Type-check and verify
+
+**Files:**
+- All modified files
+
+- [ ] **Step 1: Run type check**
+
+```bash
+cd /home/proxxy/project/teamspeak-music-bot && npm run typecheck
+```
+
+Expected: No errors.
+
+- [ ] **Step 2: Verify command parsing**
+
+```bash
+cd /home/proxxy/project/teamspeak-music-bot && node --loader ts-node/esm -e "
+const { parseCommand } = await import('./src/bot/commands.ts');
+console.log(parseCommand('!artist 周杰伦', '!'));
+console.log(parseCommand('!artist 周杰伦 -q', '!'));
+console.log(parseCommand('!playlist 华语经典', '!'));
+console.log(parseCommand('!playlist 123456', '!'));
+"
+```
+
+Expected: All parse correctly; `artist` with args "周杰伦", `playlist` with args "华语经典" and "123456".
+
+- [ ] **Step 3: Commit any fixes from type check**
+
+```bash
+git add -A && git commit -m "chore: type fixes from final verification"
+```
+(Only if there were issues)
+
+---
+
+### Self-Review Checklist
+
+1. **Spec coverage:**
+   - FM bug fix → Tasks 1, 2 (healthy frame tracking + auto-refill)
+   - Playlist fuzzy search → Task 3
+   - Artist loop → Task 4
+   - Verification → Task 5
+
+2. **No placeholders** — all steps have exact code.
+
+3. **Type consistency:**
+   - `isFmMode: boolean` — used in cmdFm, cmdStop, cmdClear, cmdPlay, cmdPlaylist, cmdAlbum, playNext, refillFm ✓
+   - `refillFm(): Promise<void>` — called from cmdFm (indirectly via playNext trigger), playNext ✓
+   - `healthyFrames: number`, `HEALTHY_FRAME_RESET: 50` — used in play(), stop(), sendNextFrame() ✓

docs/superpowers/plans/2026-05-06-music-source-tabs.md

@@ -0,0 +1,911 @@
+# Music Source Tabs Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Add NetEase / QQ source-switcher tabs to Home (推荐歌单 / 每日推荐 / 我的歌单) and Library (我的歌单), with per-section persistence and graceful degradation when only one source is logged in.
+
+**Architecture:** A single shared `<SourceTabs>` Vue component handles the tab UI and self-hides when fewer than 2 sources are available. The Pinia store splits the affected fields into `{ netease, qq }` objects, fetches from both platforms in `fetchHomeData()` based on `authStatus`, and consumers select with a reactive `activeSource` ref persisted to localStorage.
+
+**Tech Stack:** Vue 3 (Composition API + `<script setup>`), Pinia, TypeScript, SCSS (CSS variables from `web/src/styles/variables.scss`).
+
+**Spec:** `docs/superpowers/specs/2026-05-06-music-source-tabs-design.md`
+
+---
+
+## File Structure
+
+**New:**
+- `web/src/components/SourceTabs.vue` — shared tab UI (presentational, no store deps)
+
+**Modified:**
+- `web/src/stores/player.ts` — state shape change + `authStatus` + `fetchHomeData` rewrite
+- `web/src/views/Home.vue` — 3 sections wired to SourceTabs
+- `web/src/views/Library.vue` — 1 section wired; remove dead `liked` block
+
+**Unchanged:**
+- Backend (already supports `?platform=qq`)
+- All other web pages
+
+---
+
+## Task 1: Build the SourceTabs component
+
+**Files:**
+- Create: `web/src/components/SourceTabs.vue`
+
+This task is fully independent of store changes — the component is presentational, takes typed props, and emits an update event. It can land and be committed alone (build will pass; component is just unused until later tasks).
+
+- [ ] **Step 1.1: Create the component file**
+
+Write `web/src/components/SourceTabs.vue`:
+
+```vue
+<template>
+  <div v-if="sources.length >= 2" class="source-tabs">
+    <button
+      v-for="src in sources"
+      :key="src"
+      type="button"
+      class="source-tab"
+      :class="{ active: src === modelValue }"
+      @click="$emit('update:modelValue', src)"
+    >
+      {{ LABELS[src] }}
+    </button>
+  </div>
+</template>
+
+<script setup lang="ts">
+type Source = 'netease' | 'qq';
+
+const LABELS: Record<Source, string> = {
+  netease: '网易云',
+  qq: 'QQ',
+};
+
+defineProps<{
+  modelValue: Source;
+  sources: Source[];
+}>();
+
+defineEmits<{
+  'update:modelValue': [value: Source];
+}>();
+</script>
+
+<style lang="scss" scoped>
+.source-tabs {
+  display: inline-flex;
+  gap: 4px;
+  margin-left: 12px;
+  align-items: center;
+}
+
+.source-tab {
+  padding: 4px 10px;
+  min-height: 28px;
+  font-size: var(--fs-sm);
+  font-weight: var(--fw-medium);
+  color: var(--text-secondary);
+  background: transparent;
+  border: none;
+  border-radius: var(--radius-sm);
+  cursor: pointer;
+  transition: color var(--transition-fast), background var(--transition-fast);
+
+  &:hover {
+    color: var(--text-primary);
+    background: var(--hover-bg);
+  }
+
+  &.active {
+    color: var(--color-primary);
+    background: var(--color-primary-12);
+    font-weight: var(--fw-semi);
+  }
+}
+
+@media (max-width: 768px) {
+  .source-tabs {
+    margin-left: 8px;
+    gap: 2px;
+  }
+
+  .source-tab {
+    padding: 6px 10px;
+    min-height: 36px; // larger touch target on mobile
+    font-size: var(--fs-xs);
+  }
+}
+</style>
+```
+
+Why these choices:
+- `v-if="sources.length >= 2"` — auto-hide when only one source available; parent doesn't need wrapper logic
+- Min-height 28px desktop / 36px mobile — comfortable touch on phones
+- `--color-primary-12` (12% primary tint) — matches existing active-state pattern in the codebase
+- No `--brand-netease/qq` in active state — keeps tab visually consistent regardless of which platform; brand colors are reserved for SongCard platform badges where they identify content origin
+
+- [ ] **Step 1.2: Verify it imports cleanly via type check**
+
+Run from project root:
+
+```
+npx tsc --noEmit
+```
+
+Expected: exit code 0, no output.
+
+Then verify the web project also type-checks:
+
+```
+cd web && npx vue-tsc --noEmit && cd ..
+```
+
+Expected: exit code 0, no output.
+
+- [ ] **Step 1.3: Commit**
+
+```
+git add web/src/components/SourceTabs.vue
+git commit -m "feat(web): add SourceTabs component for platform switcher
+
+Presentational component for switching between netease and qq music
+sources. Auto-hides when fewer than 2 sources are passed in. Mobile
+breakpoint enlarges touch target to 36px.
+
+Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>"
+```
+
+---
+
+## Task 2: Refactor the store (state + fetchHomeData)
+
+**Files:**
+- Modify: `web/src/stores/player.ts`
+
+This task changes types, which will break Home.vue and Library.vue at compile time. **Do not run tsc/build between Task 2 and Task 4** — they are migrated in a single coherent commit. After Task 4, type-check confirms the whole change.
+
+- [ ] **Step 2.1: Add the `Source` type alias and update state shape**
+
+In `web/src/stores/player.ts`, locate the `state: () => ({ ... })` block (around line 47-63).
+
+**Find:**
+
+```ts
+    // Home page cache
+    recommendPlaylists: [] as PlaylistItem[],
+    dailySongs: [] as Song[],
+    userPlaylists: [] as PlaylistItem[],
+    bilibiliPopular: [] as Song[],
+    lastFetchTime: 0,
+```
+
+**Replace with:**
+
+```ts
+    // Home page cache, split by source
+    recommendPlaylists: { netease: [] as PlaylistItem[], qq: [] as PlaylistItem[] },
+    dailySongs:         { netease: [] as Song[],         qq: [] as Song[] },
+    userPlaylists:      { netease: [] as PlaylistItem[], qq: [] as PlaylistItem[] },
+    bilibiliPopular: [] as Song[],
+    authStatus: { netease: false, qq: false },
+    lastFetchTime: 0,
+```
+
+Also add this exported type at the top of the file, right after the existing `Song` interface (around line 12):
+
+```ts
+export type Source = 'netease' | 'qq';
+```
+
+- [ ] **Step 2.2: Rewrite `fetchHomeData()`**
+
+In the same file, find the `fetchHomeData` action (around line 352-378).
+
+**Replace the entire action body with:**
+
+```ts
+    async fetchHomeData() {
+      if (this.lastFetchTime > 0 && Date.now() - this.lastFetchTime < HOME_CACHE_TTL) {
+        return;
+      }
+
+      // 1. Fetch auth status for both platforms first.
+      const [neAuthRes, qqAuthRes] = await Promise.allSettled([
+        axios.get('/api/auth/status', { params: { platform: 'netease' } }),
+        axios.get('/api/auth/status', { params: { platform: 'qq' } }),
+      ]);
+      this.authStatus.netease =
+        neAuthRes.status === 'fulfilled' && !!neAuthRes.value.data?.loggedIn;
+      this.authStatus.qq =
+        qqAuthRes.status === 'fulfilled' && !!qqAuthRes.value.data?.loggedIn;
+
+      // 2. NetEase data: recommend playlists work anonymously; daily/user
+      // playlists need login but Promise.allSettled isolates failures.
+      const neteasePromises = [
+        axios.get('/api/music/recommend/playlists', { params: { platform: 'netease' } }),
+        axios.get('/api/music/recommend/songs',     { params: { platform: 'netease' } }),
+        axios.get('/api/music/user/playlists',      { params: { platform: 'netease' } }),
+      ];
+
+      // 3. QQ data: only fetch when QQ is logged in. When not logged in,
+      // resolve to empty payloads so the same indexed handling works.
+      const emptyPlaylists = { data: { playlists: [] } };
+      const emptySongs     = { data: { songs: [] } };
+      const qqPromises = this.authStatus.qq
+        ? [
+            axios.get('/api/music/recommend/playlists', { params: { platform: 'qq' } }),
+            axios.get('/api/music/recommend/songs',     { params: { platform: 'qq' } }),
+            axios.get('/api/music/user/playlists',      { params: { platform: 'qq' } }),
+          ]
+        : [
+            Promise.resolve(emptyPlaylists),
+            Promise.resolve(emptySongs),
+            Promise.resolve(emptyPlaylists),
+          ];
+
+      const biliPromise = axios.get('/api/music/bilibili/popular?limit=12');
+
+      const results = await Promise.allSettled([
+        ...neteasePromises,
+        ...qqPromises,
+        biliPromise,
+      ]);
+
+      const [neRecPL, neDaily, neUserPL, qqRecPL, qqDaily, qqUserPL, bili] = results;
+
+      if (neRecPL.status === 'fulfilled') {
+        this.recommendPlaylists.netease = neRecPL.value.data.playlists ?? [];
+      }
+      if (neDaily.status === 'fulfilled') {
+        this.dailySongs.netease = neDaily.value.data.songs ?? [];
+      }
+      if (neUserPL.status === 'fulfilled') {
+        this.userPlaylists.netease = neUserPL.value.data.playlists ?? [];
+      }
+      if (qqRecPL.status === 'fulfilled') {
+        this.recommendPlaylists.qq = qqRecPL.value.data.playlists ?? [];
+      }
+      if (qqDaily.status === 'fulfilled') {
+        this.dailySongs.qq = qqDaily.value.data.songs ?? [];
+      }
+      if (qqUserPL.status === 'fulfilled') {
+        this.userPlaylists.qq = qqUserPL.value.data.playlists ?? [];
+      }
+      if (bili.status === 'fulfilled') {
+        this.bilibiliPopular = bili.value.data.songs ?? [];
+      }
+
+      this.lastFetchTime = Date.now();
+    },
+```
+
+**Do NOT type-check yet** — Home/Library still reference the old shape. They'll be migrated in Tasks 3 and 4.
+
+---
+
+## Task 3: Migrate Home.vue to multi-source tabs
+
+**Files:**
+- Modify: `web/src/views/Home.vue`
+
+- [ ] **Step 3.1: Add a localStorage helper module**
+
+Create `web/src/stores/sourceTabs.ts`:
+
+```ts
+import type { Source } from './player.js';
+
+const STORAGE_KEY = 'source-tabs';
+
+export type TabKey =
+  | 'home.recommend'
+  | 'home.daily'
+  | 'home.user'
+  | 'library.user';
+
+function readAll(): Partial<Record<TabKey, Source>> {
+  try {
+    const raw = localStorage.getItem(STORAGE_KEY);
+    if (!raw) return {};
+    const parsed = JSON.parse(raw);
+    return typeof parsed === 'object' && parsed !== null ? parsed : {};
+  } catch {
+    return {};
+  }
+}
+
+export function loadTabSource(key: TabKey, fallback: Source = 'netease'): Source {
+  const all = readAll();
+  const v = all[key];
+  return v === 'netease' || v === 'qq' ? v : fallback;
+}
+
+export function saveTabSource(key: TabKey, value: Source): void {
+  try {
+    const all = readAll();
+    all[key] = value;
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(all));
+  } catch {
+    // localStorage may be unavailable (private browsing); silently no-op
+  }
+}
+```
+
+This is a separate file rather than inline so Library can reuse it without duplication.
+
+- [ ] **Step 3.2: Update Home.vue template**
+
+Replace the three `<section>` blocks (推荐歌单 / 每日推荐 / 我的歌单) and the `<script setup>` block.
+
+**Find** the entire `<template>` 推荐歌单 section (currently around lines 53-67):
+
+```vue
+    <!-- 推荐歌单 -->
+    <section class="section" v-if="store.recommendPlaylists.length > 0">
+      <h2 class="section-title">推荐歌单</h2>
+      <div class="playlist-grid">
+        <RouterLink
+          v-for="playlist in store.recommendPlaylists"
+          :key="playlist.id"
+          :to="`/playlist/${playlist.id}?platform=${playlist.platform}`"
+          class="playlist-card hover-scale"
+        >
+          <CoverArt :url="playlist.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+          <div class="playlist-name">{{ playlist.name }}</div>
+        </RouterLink>
+      </div>
+    </section>
+```
+
+**Replace with:**
+
+```vue
+    <!-- 推荐歌单 -->
+    <section class="section" v-if="recommendAvailable.length > 0">
+      <h2 class="section-title">
+        推荐歌单
+        <SourceTabs v-model="recommendSource" :sources="recommendAvailable" />
+      </h2>
+      <div class="playlist-grid">
+        <RouterLink
+          v-for="playlist in (store.recommendPlaylists[recommendSourceSafe] ?? [])"
+          :key="playlist.id"
+          :to="`/playlist/${playlist.id}?platform=${playlist.platform}`"
+          class="playlist-card hover-scale"
+        >
+          <CoverArt :url="playlist.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+          <div class="playlist-name">{{ playlist.name }}</div>
+        </RouterLink>
+      </div>
+    </section>
+```
+
+**Find** the 每日推荐 section (currently around lines 36-51):
+
+```vue
+    <!-- 每日推荐 -->
+    <section class="section" v-if="store.dailySongs.length > 0">
+      <h2 class="section-title">每日推荐</h2>
+      <div class="daily-grid">
+        <div
+          v-for="song in store.dailySongs.slice(0, 12)"
+          :key="song.id"
+          class="daily-card hover-scale"
+          @click="store.playSong(song)"
+        >
+          <CoverArt :url="song.coverUrl" :size="120" :radius="10" :show-shadow="true" />
+          <div class="daily-name">{{ song.name }}</div>
+          <div class="daily-artist">{{ song.artist }}</div>
+        </div>
+      </div>
+    </section>
+```
+
+**Replace with:**
+
+```vue
+    <!-- 每日推荐 -->
+    <section class="section" v-if="dailyAvailable.length > 0">
+      <h2 class="section-title">
+        每日推荐
+        <SourceTabs v-model="dailySource" :sources="dailyAvailable" />
+      </h2>
+      <div class="daily-grid">
+        <div
+          v-for="song in (store.dailySongs[dailySourceSafe] ?? []).slice(0, 12)"
+          :key="song.id"
+          class="daily-card hover-scale"
+          @click="store.playSong(song)"
+        >
+          <CoverArt :url="song.coverUrl" :size="120" :radius="10" :show-shadow="true" />
+          <div class="daily-name">{{ song.name }}</div>
+          <div class="daily-artist">{{ song.artist }}</div>
+        </div>
+      </div>
+    </section>
+```
+
+**Find** the 我的歌单 section (currently around lines 69-95):
+
+```vue
+    <!-- 我的歌单 -->
+    <section class="section" v-if="store.userPlaylists.length > 0">
+      <h2 class="section-title">
+        我的歌单
+        <span class="section-count">{{ store.userPlaylists.length }}</span>
+      </h2>
+      <div class="playlist-grid">
+        <RouterLink
+          v-for="pl in visibleUserPlaylists"
+          :key="pl.id"
+          :to="`/playlist/${pl.id}?platform=${pl.platform}`"
+          class="playlist-card hover-scale"
+        >
+          <CoverArt :url="pl.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+          <div class="playlist-name">{{ pl.name }}</div>
+          <div class="playlist-count">{{ pl.songCount }} 首</div>
+        </RouterLink>
+      </div>
+      <button
+        v-if="store.userPlaylists.length > USER_PLAYLIST_LIMIT"
+        class="expand-btn"
+        @click="userPlaylistsExpanded = !userPlaylistsExpanded"
+      >
+        <Icon :icon="userPlaylistsExpanded ? 'mdi:chevron-up' : 'mdi:chevron-down'" />
+        {{ userPlaylistsExpanded ? '收起' : `展开全部 ${store.userPlaylists.length} 个歌单` }}
+      </button>
+    </section>
+```
+
+**Replace with:**
+
+```vue
+    <!-- 我的歌单 -->
+    <section class="section" v-if="userAvailable.length > 0">
+      <h2 class="section-title">
+        我的歌单
+        <span class="section-count">{{ currentUserPlaylists.length }}</span>
+        <SourceTabs v-model="userSource" :sources="userAvailable" />
+      </h2>
+      <div class="playlist-grid">
+        <RouterLink
+          v-for="pl in visibleUserPlaylists"
+          :key="pl.id"
+          :to="`/playlist/${pl.id}?platform=${pl.platform}`"
+          class="playlist-card hover-scale"
+        >
+          <CoverArt :url="pl.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+          <div class="playlist-name">{{ pl.name }}</div>
+          <div class="playlist-count">{{ pl.songCount }} 首</div>
+        </RouterLink>
+      </div>
+      <button
+        v-if="currentUserPlaylists.length > USER_PLAYLIST_LIMIT"
+        class="expand-btn"
+        @click="userPlaylistsExpanded = !userPlaylistsExpanded"
+      >
+        <Icon :icon="userPlaylistsExpanded ? 'mdi:chevron-up' : 'mdi:chevron-down'" />
+        {{ userPlaylistsExpanded ? '收起' : `展开全部 ${currentUserPlaylists.length} 个歌单` }}
+      </button>
+    </section>
+```
+
+- [ ] **Step 3.3: Update Home.vue `<script setup>`**
+
+**Find** the `<script setup lang="ts">` block (currently around lines 119-153):
+
+```ts
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue';
+import { Icon } from '@iconify/vue';
+import axios from 'axios';
+import { usePlayerStore, type Song } from '../stores/player.js';
+import CoverArt from '../components/CoverArt.vue';
+
+const store = usePlayerStore();
+const USER_PLAYLIST_LIMIT = 20;
+const userPlaylistsExpanded = ref(false);
+const visibleUserPlaylists = computed(() =>
+  userPlaylistsExpanded.value
+    ? store.userPlaylists
+    : store.userPlaylists.slice(0, USER_PLAYLIST_LIMIT)
+);
+
+async function playFm() {
+  try {
+    const res = await axios.get('/api/music/personal/fm');
+    const songs: Song[] = res.data.songs;
+    if (songs.length > 0) {
+      await store.play(songs[0].name, songs[0].platform);
+      for (let i = 1; i < songs.length; i++) {
+        await store.addToQueue(songs[i].name, songs[i].platform);
+      }
+    }
+  } catch {
+    // Ignore
+  }
+}
+
+onMounted(() => {
+  store.fetchHomeData();
+});
+</script>
+```
+
+**Replace with:**
+
+```ts
+<script setup lang="ts">
+import { ref, computed, watch, onMounted } from 'vue';
+import { Icon } from '@iconify/vue';
+import axios from 'axios';
+import { usePlayerStore, type Song, type Source } from '../stores/player.js';
+import { loadTabSource, saveTabSource } from '../stores/sourceTabs.js';
+import CoverArt from '../components/CoverArt.vue';
+import SourceTabs from '../components/SourceTabs.vue';
+
+const store = usePlayerStore();
+const USER_PLAYLIST_LIMIT = 20;
+const userPlaylistsExpanded = ref(false);
+
+// Available sources per section. Recommend playlists are public for both
+// platforms — netease always; qq only when logged in. Daily and user
+// playlists need login on both sides.
+const recommendAvailable = computed<Source[]>(() => {
+  const s: Source[] = ['netease'];
+  if (store.authStatus.qq) s.push('qq');
+  return s;
+});
+const dailyAvailable = computed<Source[]>(() => {
+  const s: Source[] = [];
+  if (store.authStatus.netease) s.push('netease');
+  if (store.authStatus.qq) s.push('qq');
+  return s;
+});
+const userAvailable = computed<Source[]>(() => {
+  const s: Source[] = [];
+  if (store.authStatus.netease) s.push('netease');
+  if (store.authStatus.qq) s.push('qq');
+  return s;
+});
+
+// Persisted active source per section.
+const recommendSource = ref<Source>(loadTabSource('home.recommend'));
+const dailySource     = ref<Source>(loadTabSource('home.daily'));
+const userSource      = ref<Source>(loadTabSource('home.user'));
+
+watch(recommendSource, (v) => saveTabSource('home.recommend', v));
+watch(dailySource,     (v) => saveTabSource('home.daily',     v));
+watch(userSource,      (v) => saveTabSource('home.user',      v));
+
+// Fallback when persisted source is no longer available (e.g. user logged
+// out of QQ since last visit). We render against `*Safe` but never write
+// back, so the user's preference is preserved for when they log in again.
+const recommendSourceSafe = computed<Source>(() =>
+  recommendAvailable.value.includes(recommendSource.value)
+    ? recommendSource.value
+    : recommendAvailable.value[0] ?? 'netease'
+);
+const dailySourceSafe = computed<Source>(() =>
+  dailyAvailable.value.includes(dailySource.value)
+    ? dailySource.value
+    : dailyAvailable.value[0] ?? 'netease'
+);
+const userSourceSafe = computed<Source>(() =>
+  userAvailable.value.includes(userSource.value)
+    ? userSource.value
+    : userAvailable.value[0] ?? 'netease'
+);
+
+const currentUserPlaylists = computed(() => store.userPlaylists[userSourceSafe.value] ?? []);
+const visibleUserPlaylists = computed(() =>
+  userPlaylistsExpanded.value
+    ? currentUserPlaylists.value
+    : currentUserPlaylists.value.slice(0, USER_PLAYLIST_LIMIT)
+);
+
+async function playFm() {
+  try {
+    const res = await axios.get('/api/music/personal/fm');
+    const songs: Song[] = res.data.songs;
+    if (songs.length > 0) {
+      await store.play(songs[0].name, songs[0].platform);
+      for (let i = 1; i < songs.length; i++) {
+        await store.addToQueue(songs[i].name, songs[i].platform);
+      }
+    }
+  } catch {
+    // Ignore
+  }
+}
+
+onMounted(() => {
+  store.fetchHomeData();
+});
+</script>
+```
+
+Note: The 我的歌单 template uses `userSource` (not `userSourceSafe`) on the `<SourceTabs>` v-model so the user's click maps directly to the persisted ref. The grid below the tabs uses `currentUserPlaylists` which derives from `userSourceSafe`, so even if `userSource` points at an unavailable platform momentarily, the grid still renders something sensible. Same pattern for 推荐歌单 / 每日推荐.
+
+---
+
+## Task 4: Migrate Library.vue and remove dead code
+
+**Files:**
+- Modify: `web/src/views/Library.vue`
+
+- [ ] **Step 4.1: Replace the template**
+
+**Find** the `<template>` block (currently lines 1-64) and **replace the entire template with:**
+
+```vue
+<template>
+  <div class="library-page">
+    <h1 class="page-title">音乐库</h1>
+
+    <!-- 我的歌单 -->
+    <section class="section" v-if="userAvailable.length > 0">
+      <h2 class="section-title">
+        我的歌单
+        <span class="section-count">{{ currentUserPlaylists.length }}</span>
+        <SourceTabs v-model="userSource" :sources="userAvailable" />
+      </h2>
+      <div class="playlist-grid">
+        <RouterLink
+          v-for="pl in currentUserPlaylists"
+          :key="pl.id"
+          :to="`/playlist/${pl.id}?platform=${pl.platform}`"
+          class="playlist-card hover-scale"
+        >
+          <CoverArt :url="pl.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+          <div class="playlist-name">{{ pl.name }}</div>
+          <div class="playlist-count">{{ pl.songCount }} 首</div>
+        </RouterLink>
+      </div>
+    </section>
+
+    <!-- 最近播放 -->
+    <section class="section">
+      <h2 class="section-title">最近播放</h2>
+      <div v-if="historyLoading" class="loading">加载中...</div>
+      <div v-else-if="history.length === 0" class="empty">暂无播放记录</div>
+      <div v-else class="song-list">
+        <SongCard
+          v-for="(song, i) in history.slice(0, 10)"
+          :key="`hist-${song.id}-${i}`"
+          :song="song"
+          :index="i + 1"
+          :active="store.currentSong?.id === song.id"
+          @play="store.play(song.name, song.platform)"
+          @add="store.addToQueue(song.name, song.platform)"
+        />
+      </div>
+    </section>
+
+    <div v-if="!historyLoading && userAvailable.length === 0 && history.length === 0" class="empty-state">
+      <Icon icon="mdi:music-box-outline" class="empty-icon" />
+      <div>登录网易云或QQ音乐后，这里将显示你的歌单和播放记录</div>
+    </div>
+  </div>
+</template>
+```
+
+Changes from the previous version:
+- "我的歌单" section: same data binding pattern as Home (`userAvailable`, `currentUserPlaylists`, `<SourceTabs>`)
+- "我的收藏" section: removed entirely (the `/api/music/user/liked` endpoint never existed)
+- Empty state condition: replaced `liked.length === 0` with `userAvailable.length === 0`
+
+- [ ] **Step 4.2: Replace the script block**
+
+**Find** the `<script setup lang="ts">` block (currently lines 66-105) and **replace with:**
+
+```ts
+<script setup lang="ts">
+import { ref, computed, watch, onMounted } from 'vue';
+import { Icon } from '@iconify/vue';
+import axios from 'axios';
+import { usePlayerStore, type Song, type Source } from '../stores/player.js';
+import { loadTabSource, saveTabSource } from '../stores/sourceTabs.js';
+import CoverArt from '../components/CoverArt.vue';
+import SongCard from '../components/SongCard.vue';
+import SourceTabs from '../components/SourceTabs.vue';
+
+const store = usePlayerStore();
+
+const history = ref<Song[]>([]);
+const historyLoading = ref(true);
+
+const userAvailable = computed<Source[]>(() => {
+  const s: Source[] = [];
+  if (store.authStatus.netease) s.push('netease');
+  if (store.authStatus.qq) s.push('qq');
+  return s;
+});
+
+const userSource = ref<Source>(loadTabSource('library.user'));
+watch(userSource, (v) => saveTabSource('library.user', v));
+
+const userSourceSafe = computed<Source>(() =>
+  userAvailable.value.includes(userSource.value)
+    ? userSource.value
+    : userAvailable.value[0] ?? 'netease'
+);
+
+const currentUserPlaylists = computed(() => store.userPlaylists[userSourceSafe.value] ?? []);
+
+onMounted(async () => {
+  if (!store.activeBotId) {
+    await store.fetchBots();
+  }
+
+  store.fetchHomeData();
+
+  if (store.activeBotId) {
+    try {
+      const res = await axios.get(`/api/player/${store.activeBotId}/history`);
+      history.value = res.data.history ?? [];
+    } catch {
+      // API may not be ready
+    }
+  }
+
+  historyLoading.value = false;
+});
+</script>
+```
+
+Changes:
+- Removed `liked` ref and the `/api/music/user/liked` axios call
+- Added auth-driven `userAvailable`, persisted `userSource`, and `currentUserPlaylists` computed
+- Imports `Source` type and `SourceTabs` component
+
+- [ ] **Step 4.3: Style — `.section-title` already supports inline children**
+
+The existing `.section-title` style (Library.vue and Home.vue both) already uses `display: flex; align-items: center; gap: 8px;`. SourceTabs uses `display: inline-flex` with its own `margin-left`, so it sits inline with the title and count. **No style changes are required in either Home.vue or Library.vue.**
+
+---
+
+## Task 5: Verify the build and types
+
+- [ ] **Step 5.1: Run TypeScript backend type check**
+
+```
+npx tsc --noEmit
+```
+
+Expected: exit code 0, no output. (No backend files were touched.)
+
+- [ ] **Step 5.2: Run web type check + production build**
+
+```
+npm run build:web
+```
+
+Expected: build completes with `✓ built in N.NNs` and no TypeScript errors. The script runs `vue-tsc --noEmit && vite build`, so failures here mean a type or template error in our changes.
+
+- [ ] **Step 5.3: Run the existing test suite to confirm no regression**
+
+```
+npm test
+```
+
+Expected: same baseline as before this feature (`Test Files 2 failed | 26 passed (28)`, `Tests 2 failed | 161 passed (163)`). The 2 pre-existing failures are in `dist/` and `.claude/worktrees/` and are unrelated to our changes — they should remain at exactly 2.
+
+If any **source-tree** test fails (anything not in `dist/` or `.claude/worktrees/`), stop and investigate.
+
+---
+
+## Task 6: Manual smoke test on the dev server
+
+This task verifies behavior the type system can't catch.
+
+- [ ] **Step 6.1: Start the dev server**
+
+```
+npm run dev
+```
+
+Wait for `Web server started` and `WebUI: http://localhost:3000` log lines.
+
+- [ ] **Step 6.2: Test scenario A — only NetEase logged in**
+
+Open http://localhost:3000 in a browser. Confirm:
+
+- 推荐歌单 section displays NetEase playlists, **no tab bar visible** (single source, SourceTabs auto-hidden)
+- 每日推荐 section: visible only if NetEase login provides daily songs; **no tab bar**
+- 我的歌单 section: visible if NetEase has user playlists; **no tab bar**
+- Navigate to `/library`: 我的歌单 section: same — no tab bar, NetEase playlists shown
+
+Open DevTools → Application → Local Storage → `localhost:3000` → `source-tabs` should be absent or `{}` (no clicks happened).
+
+- [ ] **Step 6.3: Test scenario B — both NetEase and QQ logged in**
+
+If QQ is not logged in, log in via Settings → QQ Music → 扫码登录.
+
+Hard reload the browser (Cmd/Ctrl+Shift+R) to bypass the 5-min `lastFetchTime` cache.
+
+Confirm:
+
+- 推荐歌单: tab bar shows `[网易云] [QQ]`, NetEase active by default
+- Click `QQ` — playlist grid switches to QQ data, no flicker (data already in store)
+- Click `网易云` — back to NetEase
+- Same for 每日推荐 and 我的歌单
+- Navigate to `/library`, confirm 我的歌单 has its own tab bar with independent state
+- Reload the page — Home tabs and Library tab persist their last-selected source independently
+
+Check `localStorage['source-tabs']`: should contain JSON with up to 4 keys (`home.recommend`, `home.daily`, `home.user`, `library.user`).
+
+- [ ] **Step 6.4: Test scenario C — fallback when persisted source becomes unavailable**
+
+While logged into both:
+1. On Home, switch 推荐歌单 to `QQ`. Confirm `localStorage['source-tabs']['home.recommend'] === 'qq'`.
+2. Go to Settings → log out of QQ.
+3. Hard-reload Home.
+
+Confirm:
+- 推荐歌单 tab bar disappears (only NetEase available)
+- Grid shows NetEase playlists (graceful fallback via `recommendSourceSafe`)
+- `localStorage['source-tabs']['home.recommend']` is **still `'qq'`** (preference preserved)
+4. Log back into QQ → reload → 推荐歌单 grid is QQ again (preference restored)
+
+- [ ] **Step 6.5: Test mobile layout**
+
+Open DevTools → Toggle device toolbar → set width to 375px (iPhone SE).
+
+Confirm on Home and Library:
+- Section title + tab bar fit on the same line without overflow
+- Tab buttons are at least 36px tall (use Inspect → check computed `min-height`)
+- Tabs are tappable (clicking still switches sources)
+
+- [ ] **Step 6.6: Stop the dev server**
+
+Kill the `npm run dev` process.
+
+---
+
+## Task 7: Final commit
+
+- [ ] **Step 7.1: Stage and commit Task 2 + 3 + 4 changes**
+
+```
+git add web/src/stores/player.ts web/src/stores/sourceTabs.ts web/src/views/Home.vue web/src/views/Library.vue
+git status
+```
+
+Expected `git status` output: 4 modified/new files staged, working tree otherwise clean (apart from pre-existing `.claude/worktrees/` and `test-ts6-version.cjs` untracked).
+
+```
+git commit -m "feat(web): per-platform source tabs on Home and Library
+
+Recommend playlists, daily songs, and user playlists on Home now show
+a [网易云][QQ] tab when both platforms are logged in. Library 我的歌单
+gets the same tab. Selection persists per-section in localStorage and
+falls back gracefully when the persisted source becomes unavailable
+(e.g., user logged out). Removes dead 我的收藏 block from Library that
+referenced a non-existent /api/music/user/liked endpoint.
+
+Spec: docs/superpowers/specs/2026-05-06-music-source-tabs-design.md
+
+Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>"
+```
+
+- [ ] **Step 7.2: Verify commit landed**
+
+```
+git log --oneline -3
+```
+
+Expected:
+```
+<sha> feat(web): per-platform source tabs on Home and Library
+<sha> feat(web): add SourceTabs component for platform switcher
+<sha> docs: spec for multi-source tabs on Home and Library
+```
+
+---
+
+## Done
+
+The branch should now have 3 new commits on top of the merge commit, all green builds and tests, and the feature working in dev mode.

docs/superpowers/plans/2026-05-07-album-search-and-playback.md

@@ -0,0 +1,520 @@
+# Album Search & Playback Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Surface albums in search results and allow playing the whole album from the web UI. Currently `SearchResult.albums` is always `[]` and Search.vue only renders songs.
+
+**Architecture:** Extend `search()` in netease + qq providers to populate `albums`. Aggregate them in `/search/all`. Add a new "专辑" (and "歌单") section to Search.vue. Reuse `Playlist.vue` as the album detail page by branching on `route.meta.kind` between `/playlist/:id` and `/album/:id` endpoints. The existing `getAlbumSongs(id)` and `/api/music/album/:id` endpoint already work.
+
+**Tech Stack:** Node 20 + TS, Express 5, Vue 3 + Vue Router 4, axios. No new deps.
+
+---
+
+## Spec Reference
+
+`docs/superpowers/specs/2026-05-07-custom-avatar-and-album-search-design.md` — section "专辑搜索".
+
+## File Structure
+
+| File | Action | Responsibility |
+|---|---|---|
+| `src/music/provider.ts` | Read-only | Verify `Album` and `SearchResult.albums` shape (no change expected) |
+| `src/music/netease.ts` | Modify | `search()` adds a third parallel call (`type=10`) and maps albums |
+| `src/music/qq.ts` | Modify | `search()` adds `req_album` section and maps albums |
+| `src/music/netease.test.ts` | Modify | New tests for albums in search response |
+| `src/music/qq.test.ts` | Modify (or create if absent) | Tests for albums in qq search |
+| `src/web/api/music.ts` | Modify | `/search/all` returns `{songs, albums, playlists}` |
+| `web/src/views/Search.vue` | Modify | Render albums + playlists sections |
+| `web/src/views/Playlist.vue` | Modify | Branch endpoint by `route.meta.kind === 'album'` |
+| `web/src/router/index.ts` | Modify | Add `/album/:id` route reusing Playlist component, set `meta.kind = 'album'` |
+
+## Conventions
+
+- TDD throughout. Each task: failing test → implement → verify → commit.
+- Mock HTTP via existing fixtures pattern (look at `src/music/netease.test.ts` for setup).
+- Keep all platform-specific quirks inside the provider class — no leaking into Search.vue logic.
+
+---
+
+### Task 1: netease.ts — fetch albums in search
+
+**Files:**
+- Modify: `src/music/netease.ts`
+- Modify: `src/music/netease.test.ts`
+
+- [ ] **Step 1: Read the existing test setup so we mock the same way**
+
+```bash
+grep -n 'cloudsearch\|MockAdapter\|axios.create\|mock\|nock\|fixture' src/music/netease.test.ts | head -20
+```
+
+- [ ] **Step 2: Write the failing test**
+
+Append to `src/music/netease.test.ts` inside the existing `describe`:
+
+```ts
+  it("populates SearchResult.albums from cloudsearch type=10", async () => {
+    // Adjust the fixture/mock helper to your existing test pattern.
+    // The test should: arrange a mock that returns a non-empty albums array
+    // for type=10, run search(), assert result.albums has the expected shape.
+    mockApi.onGet("/cloudsearch", { params: expect.objectContaining({ type: 10 }) }).reply(200, {
+      result: {
+        albums: [
+          { id: 42, name: "Album A", picUrl: "https://x/p.jpg", artists: [{ name: "Artist X" }] },
+        ],
+      },
+    });
+    mockApi.onGet("/cloudsearch", { params: expect.objectContaining({ type: 1 }) }).reply(200, { result: { songs: [] } });
+    mockApi.onGet("/cloudsearch", { params: expect.objectContaining({ type: 1000 }) }).reply(200, { result: { playlists: [] } });
+
+    const provider = makeProvider();
+    const r = await provider.search("foo", 5);
+    expect(r.albums).toEqual([
+      { id: "42", name: "Album A", artist: "Artist X", coverUrl: "https://x/p.jpg", platform: "netease" },
+    ]);
+  });
+```
+
+If the existing tests use a different mock library (e.g. `msw` or manual axios stubbing), translate the fixture above to match. Do not introduce new test deps.
+
+- [ ] **Step 3: Run test to verify it fails**
+
+Run: `npx vitest run src/music/netease.test.ts`
+Expected: FAIL — `result.albums` is `[]`
+
+- [ ] **Step 4: Implement the change**
+
+In `src/music/netease.ts` `search()` (~line 93), change the `Promise.all` from 2 to 3 calls:
+
+```ts
+const [songRes, playlistRes, albumRes] = await Promise.all([
+  this.api.get("/cloudsearch", { params: { keywords: query, type: 1, limit, ...this.cookieParams } }),
+  this.api.get("/cloudsearch", { params: { keywords: query, type: 1000, limit: 5, ...this.cookieParams } }),
+  this.api.get("/cloudsearch", { params: { keywords: query, type: 10, limit: 5, ...this.cookieParams } }),
+]);
+```
+
+After the existing `playlists: Playlist[] = ...` mapping, add:
+
+```ts
+const albums: Album[] = (albumRes.data?.result?.albums ?? []).map((a: any) => ({
+  id: String(a.id),
+  name: a.name ?? "",
+  artist: (a.artists ?? []).map((x: any) => x.name).join(" / "),
+  coverUrl: a.picUrl ?? "",
+  platform: "netease",
+}));
+```
+
+Update the `return { songs, playlists, albums: [] }` to `return { songs, playlists, albums }`.
+
+(Make sure `Album` is imported from `./provider.js`; if not yet imported, add it to the existing import.)
+
+- [ ] **Step 5: Run test to verify it passes**
+
+Run: `npx vitest run src/music/netease.test.ts`
+Expected: PASS
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/music/netease.ts src/music/netease.test.ts
+git commit -m "feat(netease): include albums in search results"
+```
+
+---
+
+### Task 2: qq.ts — fetch albums in search
+
+**Files:**
+- Modify: `src/music/qq.ts`
+- Modify or Create: `src/music/qq.test.ts`
+
+- [ ] **Step 1: Verify whether qq.test.ts exists**
+
+```bash
+ls src/music/qq.test.ts
+```
+
+If absent, create a minimal one mirroring `netease.test.ts` style: instantiate provider, mock the `qqDirectApi` axios instance, assert `r.albums.length > 0` after a `search()` call.
+
+- [ ] **Step 2: Write the failing test**
+
+Add to `src/music/qq.test.ts`:
+
+```ts
+it("populates SearchResult.albums from a parallel album search request", async () => {
+  // Mock returns an album list under req_album.data.body.album.list
+  mockApi.onGet("/cgi-bin/musicu.fcg").reply((cfg) => {
+    const data = JSON.parse(cfg.params?.data ?? "{}");
+    if (data.req_album) {
+      return [200, { req_album: { data: { body: { album: { list: [
+        { albumMID: "abc", albumName: "Aero", singerName: "S", albumPic: "https://x/p.jpg" },
+      ] } } } } }];
+    }
+    if (data.req_0) {
+      return [200, { req_0: { data: { body: { song: { list: [] } } } } }];
+    }
+    return [200, {}];
+  });
+
+  const provider = makeProvider();
+  const r = await provider.search("foo", 5);
+  expect(r.albums).toEqual([
+    { id: "abc", name: "Aero", artist: "S", coverUrl: expect.stringContaining("https://"), platform: "qq" },
+  ]);
+});
+```
+
+Verify the actual QQ API response shape against a real call before finalizing the field names — `albumMID` vs `mid`, `albumPic` vs `pic`, etc. If unsure, log a real response once and freeze the shape in the fixture.
+
+- [ ] **Step 3: Run test to verify it fails**
+
+Run: `npx vitest run src/music/qq.test.ts`
+Expected: FAIL — `r.albums` is `[]`
+
+- [ ] **Step 4: Implement the change**
+
+In `src/music/qq.ts` `search()` (~line 63), change `reqData` to include both `req_0` (songs) and `req_album` (albums):
+
+```ts
+const reqData = JSON.stringify({
+  req_0: {
+    module: "music.search.SearchCgiService",
+    method: "DoSearchForQQMusicDesktop",
+    param: { searchid: "1", query, num_per_page: Math.min(limit, 50), search_type: 0 },
+  },
+  req_album: {
+    module: "music.search.SearchCgiService",
+    method: "DoSearchForQQMusicDesktop",
+    param: { searchid: "1", query, num_per_page: 5, search_type: 8 },
+  },
+});
+```
+
+After the existing `songs` mapping, add:
+
+```ts
+const albumList: any[] = res.data?.req_album?.data?.body?.album?.list ?? [];
+const albums: Album[] = albumList.map((a: any) => ({
+  id: String(a.albumMID ?? a.mid ?? a.albumID ?? ""),
+  name: a.albumName ?? a.title ?? "",
+  artist: a.singerName ?? (a.singer ?? []).map((s: any) => s.name).join(" / "),
+  coverUrl: a.albumMID
+    ? `https://y.gtimg.cn/music/photo_new/T002R300x300M000${a.albumMID}.jpg`
+    : (a.albumPic ?? ""),
+  platform: "qq",
+}));
+```
+
+Change `return { songs, playlists: [], albums: [] }` to `return { songs, playlists: [], albums }`.
+
+- [ ] **Step 5: Run test to verify it passes**
+
+Run: `npx vitest run src/music/qq.test.ts`
+Expected: PASS
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/music/qq.ts src/music/qq.test.ts
+git commit -m "feat(qq): include albums in search results"
+```
+
+---
+
+### Task 3: /search/all — aggregate albums + playlists
+
+**Files:**
+- Modify: `src/web/api/music.ts`
+
+- [ ] **Step 1: Look at the current aggregation**
+
+In `src/web/api/music.ts` near line 40 the `/search/all` handler builds only `songs`. Extend it.
+
+- [ ] **Step 2: Write a failing integration test (if test infra allows)**
+
+If there's already a test file for music.ts, add a test that mocks the providers and asserts `res.body.albums.length > 0`. If not, skip and rely on Task 1+2 unit coverage + manual verification in Task 4.
+
+- [ ] **Step 3: Aggregate albums + playlists**
+
+Replace the existing `songs = ...` block + `res.json({ songs })` at lines ~54–62 with:
+
+```ts
+const songs = [
+  ...(neteaseResult.status === "fulfilled" ? neteaseResult.value.songs : []),
+  ...(qqResult.status === "fulfilled" ? qqResult.value.songs : []),
+  ...(bilibiliResult.status === "fulfilled" ? bilibiliResult.value.songs : []),
+];
+const albums = [
+  ...(neteaseResult.status === "fulfilled" ? neteaseResult.value.albums : []),
+  ...(qqResult.status === "fulfilled" ? qqResult.value.albums : []),
+];
+const playlists = [
+  ...(neteaseResult.status === "fulfilled" ? neteaseResult.value.playlists : []),
+  ...(qqResult.status === "fulfilled" ? qqResult.value.playlists : []),
+];
+
+res.json({ songs, albums, playlists });
+```
+
+(Bilibili intentionally skipped for albums/playlists — no album concept; playlists likewise minor.)
+
+- [ ] **Step 4: Verify by curl**
+
+Build + run, then:
+
+```bash
+curl -s 'http://localhost:3000/api/music/search/all?q=Beyond' \
+  | python3 -c 'import json,sys;d=json.load(sys.stdin);print({k: len(v) for k, v in d.items()})'
+```
+
+Expected: `{'songs': N>0, 'albums': N>0, 'playlists': N>=0}`
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/web/api/music.ts
+git commit -m "feat(api): /search/all returns albums and playlists"
+```
+
+---
+
+### Task 4: Album route reusing Playlist.vue
+
+**Files:**
+- Modify: `web/src/router/index.ts`
+- Modify: `web/src/views/Playlist.vue`
+
+- [ ] **Step 1: Look at the current router config and Playlist load logic**
+
+```bash
+grep -n "path:\|component:\|meta" web/src/router/index.ts
+grep -n "loadPlaylist\|/api/music/playlist\|onMounted" web/src/views/Playlist.vue
+```
+
+- [ ] **Step 2: Add /album/:id route**
+
+In `web/src/router/index.ts`, find the `/playlist/:id` route entry. Right after it, add:
+
+```ts
+  {
+    path: '/album/:id',
+    component: () => import('../views/Playlist.vue'),
+    meta: { kind: 'album' },
+  },
+```
+
+(If `/playlist/:id` is `meta:`-less, also add `meta: { kind: 'playlist' }` to it for symmetry.)
+
+- [ ] **Step 3: Branch the endpoint inside Playlist.vue**
+
+Find the load function (probably `onMounted(async () => { axios.get('/api/music/playlist/' + id, ...) })`). Refactor:
+
+```ts
+const route = useRoute();
+const kind = (route.meta.kind as string) ?? 'playlist'; // 'playlist' | 'album'
+const endpoint = kind === 'album' ? '/api/music/album/' : '/api/music/playlist/';
+// ... use `${endpoint}${route.params.id}` ...
+```
+
+For the hero metadata, the playlist endpoint returns `{songs}` only (no top-level cover/title) — verify what the Album endpoint currently returns. If both only return `{songs}`, the existing Playlist.vue must already derive the cover from somewhere (probably the first song's coverUrl, or an additional `/api/music/playlist/:id/detail` call). Keep the existing pattern; if a separate detail call is needed for albums, fetch the metadata from `/api/music/song/<firstSong.id>` to get the album name + cover, OR add a thin `/api/music/album/:id/detail` endpoint that returns `{ name, coverUrl, description }`.
+
+**Decision:** if Playlist.vue currently uses ONLY `/api/music/playlist/:id` and derives metadata from songs, do the same for albums (no new endpoint). If it calls a separate detail endpoint, add a matching `/api/music/album/:id/detail` returning `{ name, coverUrl }` from the first song's `album` and `coverUrl` fields.
+
+- [ ] **Step 4: Verify in browser**
+
+Run `cd web && npm run dev`. Visit `/album/<some-netease-album-id>` (pick one from a search). Expect: hero header + song list + play-all button — same UX as a playlist page.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add web/src/router/index.ts web/src/views/Playlist.vue
+git commit -m "feat(web): /album/:id route reusing Playlist view"
+```
+
+---
+
+### Task 5: Search.vue — render albums + playlists sections
+
+**Files:**
+- Modify: `web/src/views/Search.vue`
+
+- [ ] **Step 1: Read current Search.vue**
+
+```bash
+sed -n '1,120p' web/src/views/Search.vue
+```
+
+Identify: the `results.value = res.data.songs` line and the `<div v-else-if="results.length > 0">` block.
+
+- [ ] **Step 2: Refactor to three result lists**
+
+Replace the script:
+
+```ts
+import type { Song } from '../stores/player.js';
+
+interface Album { id: string; name: string; artist: string; coverUrl: string; platform: string; }
+interface Playlist { id: string; name: string; coverUrl: string; songCount?: number; platform: string; }
+
+const songs = ref<Song[]>([]);
+const albums = ref<Album[]>([]);
+const playlists = ref<Playlist[]>([]);
+const loading = ref(false);
+const searched = ref(false);
+
+async function doSearch() {
+  if (!query.value.trim()) return;
+  loading.value = true;
+  searched.value = true;
+  try {
+    const res = await axios.get('/api/music/search/all', { params: { q: query.value } });
+    songs.value = res.data.songs ?? [];
+    albums.value = res.data.albums ?? [];
+    playlists.value = res.data.playlists ?? [];
+  } catch {
+    songs.value = []; albums.value = []; playlists.value = [];
+  } finally {
+    loading.value = false;
+  }
+}
+```
+
+- [ ] **Step 3: Render the sections**
+
+Replace the existing `<div v-else-if="results.length > 0" class="results">` block:
+
+```vue
+    <template v-else-if="songs.length || albums.length || playlists.length">
+      <section v-if="albums.length" class="result-section">
+        <h2 class="section-title">专辑</h2>
+        <div class="card-grid">
+          <router-link
+            v-for="al in albums"
+            :key="`${al.platform}-${al.id}`"
+            :to="`/album/${al.id}?platform=${al.platform}`"
+            class="card hover-scale"
+          >
+            <CoverArt :url="al.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+            <div class="card-name">{{ al.name }}</div>
+            <div class="card-sub">{{ al.artist }}</div>
+          </router-link>
+        </div>
+      </section>
+
+      <section v-if="playlists.length" class="result-section">
+        <h2 class="section-title">歌单</h2>
+        <div class="card-grid">
+          <router-link
+            v-for="pl in playlists"
+            :key="`${pl.platform}-${pl.id}`"
+            :to="`/playlist/${pl.id}?platform=${pl.platform}`"
+            class="card hover-scale"
+          >
+            <CoverArt :url="pl.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+            <div class="card-name">{{ pl.name }}</div>
+          </router-link>
+        </div>
+      </section>
+
+      <section v-if="songs.length" class="result-section">
+        <h2 class="section-title">单曲</h2>
+        <SongCard
+          v-for="(song, i) in songs"
+          :key="`${song.platform}-${song.id}`"
+          :song="song"
+          :index="i + 1"
+          :active="store.currentSong?.id === song.id"
+          @play="store.playSong(song)"
+          @playNext="store.playNextSong(song)"
+          @add="store.addSong(song)"
+        />
+      </section>
+    </template>
+
+    <div v-else-if="searched" class="empty">未找到相关结果</div>
+```
+
+(Import `CoverArt`: `import CoverArt from '../components/CoverArt.vue';`.)
+
+- [ ] **Step 4: Add minimal styles**
+
+Append to the `<style lang="scss" scoped>` block:
+
+```scss
+.result-section {
+  margin-bottom: 32px;
+  .section-title { font-size: 18px; margin: 0 0 12px; opacity: 0.85; }
+}
+.card-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
+  gap: 16px;
+}
+.card {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  text-decoration: none;
+  color: inherit;
+  .card-name { font-size: 14px; line-height: 1.3; max-height: 2.6em; overflow: hidden; }
+  .card-sub  { font-size: 12px; opacity: 0.6; }
+}
+```
+
+- [ ] **Step 5: Build + visually verify**
+
+```bash
+cd web && npm run build
+```
+
+Then `npm run dev` → search "周杰伦" → see three sections; click an album card → arrives at `/album/:id` with songs + play-all.
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add web/src/views/Search.vue
+git commit -m "feat(web): show album + playlist sections in search"
+```
+
+---
+
+### Task 6: Open PR
+
+- [ ] **Step 1: Push branch**
+
+```bash
+git checkout -b feat/album-search
+git push -u origin feat/album-search
+```
+
+- [ ] **Step 2: Create the PR**
+
+```bash
+gh pr create --title "feat(search): album section + album playback" --body "Closes part of #51 (album half).
+
+## Summary
+- netease.search() / qq.search() now populate SearchResult.albums
+- /api/music/search/all returns albums + playlists alongside songs
+- Search.vue renders three sections: 专辑 / 歌单 / 单曲
+- /album/:id route reuses Playlist.vue with meta.kind='album'
+- bilibili / youtube intentionally still return albums:[] (no album API)
+
+## Test plan
+- [x] vitest covers netease + qq search returning non-empty albums
+- [x] curl /search/all?q=周杰伦 returns {songs, albums, playlists}
+- [x] Manual: search → click album card → /album/:id → play all
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)"
+```
+
+---
+
+## Self-Review Checklist
+
+- [x] Spec coverage: backend album search → Tasks 1+2; aggregator → Task 3; album detail route → Task 4; UI sections → Task 5
+- [x] No "TBD"/placeholder text — every step shows the actual diff or command
+- [x] Type names consistent: `Album` (capital A), `albums` (lowercase plural), `SearchResult.albums`
+- [x] Bilibili/YouTube explicitly out of scope per spec — confirmed in Task 3 by skipping them in albums aggregation
+- [x] Routes use `meta.kind` — same key referenced in Playlist.vue (Task 4) and `/album/:id` registration (Task 4 Step 2)

docs/superpowers/plans/2026-05-07-custom-bot-avatar.md

@@ -0,0 +1,903 @@
+# Custom Bot Avatar Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Let users upload a fixed avatar per bot. When `avatarEnabled=true`, the avatar follows the song cover during playback and reverts to the custom avatar (instead of clearing) on stop. When `avatarEnabled=false` and a custom avatar exists, the bot always shows the custom avatar.
+
+**Architecture:** New SQLite column stores a relative file path; bytes live on disk under `data/avatars/<botId>.<ext>` (mirrors `data/cookies/`). `BotProfileManager` gains a `customAvatar` Buffer; the existing `clearAvatar()` becomes "restore custom or clear"; `onConnect()` immediately applies the custom avatar when sync is off. Three new REST endpoints (GET/PUT/DELETE) under `/api/bot/:id/avatar` accept base64 JSON (avoids adding multer; bump `express.json()` limit).
+
+**Tech Stack:** Node 20 + TS + Express 5, better-sqlite3, Vue 3 + axios. No new runtime deps.
+
+---
+
+## Spec Reference
+
+`docs/superpowers/specs/2026-05-07-custom-avatar-and-album-search-design.md` — section "自定义头像".
+
+## File Structure
+
+| File | Action | Responsibility |
+|---|---|---|
+| `src/data/database.ts` | Modify | Add `custom_avatar_path` column + migration + accessor methods |
+| `src/data/avatars.ts` | **Create** | Read/write/delete avatar files under `data/avatars/` |
+| `src/bot/profile.ts` | Modify | `customAvatar` field, `setCustomAvatar`, `applyIdleAvatar`, modify `clearAvatar`, modify `onConnect` |
+| `src/bot/instance.ts` | Modify | Load custom avatar on start, pass to ProfileManager |
+| `src/web/api/bot.ts` | Modify | Add GET/PUT/DELETE `/avatar` endpoints |
+| `src/web/server.ts` | Modify | Bump `express.json()` limit to `400kb` |
+| `src/index.ts` | Modify | Pass `AVATAR_DIR` to bot manager / API router |
+| `src/data/database.test.ts` | Modify | Test custom avatar path persistence + migration idempotency |
+| `src/data/avatars.test.ts` | **Create** | Unit tests for avatar store |
+| `src/bot/profile.test.ts` | **Create** | Tests for new precedence logic with a mock TS3Client |
+| `web/src/components/AvatarUpload.vue` | **Create** | Reusable avatar picker + preview + delete |
+| `web/src/views/Settings.vue` | Modify | Add custom avatar row in profile features list; insert into create-bot and edit-bot forms |
+
+## Conventions
+
+- TDD: failing test → implement → verify → commit, every step.
+- Commits use conventional format: `feat(profile):`, `feat(api):`, `feat(web):`, `test(...)`. Each task ends with one commit.
+- Tests live in vitest (`npm test`).
+- All paths absolute or relative to repo root.
+
+---
+
+### Task 1: DB migration + getter/setter for custom avatar path
+
+**Files:**
+- Modify: `src/data/database.ts`
+- Modify: `src/data/database.test.ts`
+
+- [ ] **Step 1: Write the failing test**
+
+Add to `src/data/database.test.ts` after the existing tests (find the closing `});` of the last test case in the `describe` block, insert before it):
+
+```ts
+  it("persists and clears customAvatarPath on a bot instance", () => {
+    const inst = {
+      id: "bot-1",
+      name: "B",
+      serverAddress: "x",
+      serverPort: 9987,
+      nickname: "n",
+      defaultChannel: "",
+      channelPassword: "",
+      autoStart: false,
+      serverProtocol: "",
+      ts6ApiKey: "",
+      serverPassword: "",
+    };
+    botDb.saveBotInstance(inst);
+    expect(botDb.getCustomAvatarPath("bot-1")).toBeNull();
+    botDb.setCustomAvatarPath("bot-1", "avatars/bot-1.png");
+    expect(botDb.getCustomAvatarPath("bot-1")).toBe("avatars/bot-1.png");
+    botDb.setCustomAvatarPath("bot-1", null);
+    expect(botDb.getCustomAvatarPath("bot-1")).toBeNull();
+  });
+```
+
+- [ ] **Step 2: Run test to verify it fails**
+
+Run: `npx vitest run src/data/database.test.ts`
+Expected: FAIL — `botDb.getCustomAvatarPath is not a function`
+
+- [ ] **Step 3: Add the column to migration + interface + statements**
+
+In `src/data/database.ts`:
+
+1. Find `BotDatabase` interface (~line 54), add two methods before `close()`:
+
+```ts
+  getCustomAvatarPath(botId: string): string | null;
+  setCustomAvatarPath(botId: string, path: string | null): void;
+```
+
+2. Find `migrateSchema()` (~line 66). After the `for (const col of profileCols)` loop, append:
+
+```ts
+  if (!names.includes("custom_avatar_path")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN custom_avatar_path TEXT");
+  }
+```
+
+3. In `createDatabase()` after the existing `prepare(...)` calls (~line 180), add:
+
+```ts
+  const selectCustomAvatar = db.prepare(
+    `SELECT custom_avatar_path FROM bot_instances WHERE id = ?`,
+  );
+  const updateCustomAvatar = db.prepare(
+    `UPDATE bot_instances SET custom_avatar_path = ? WHERE id = ?`,
+  );
+```
+
+4. Inside the returned object, add (before `close()`):
+
+```ts
+    getCustomAvatarPath(botId) {
+      const row = selectCustomAvatar.get(botId) as { custom_avatar_path: string | null } | undefined;
+      return row?.custom_avatar_path ?? null;
+    },
+
+    setCustomAvatarPath(botId, path) {
+      updateCustomAvatar.run(path, botId);
+    },
+```
+
+- [ ] **Step 4: Run test to verify it passes**
+
+Run: `npx vitest run src/data/database.test.ts`
+Expected: PASS — all tests including the new one
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/data/database.ts src/data/database.test.ts
+git commit -m "feat(db): custom_avatar_path column + accessors"
+```
+
+---
+
+### Task 2: Avatar storage helper
+
+**Files:**
+- Create: `src/data/avatars.ts`
+- Create: `src/data/avatars.test.ts`
+
+- [ ] **Step 1: Write the failing test**
+
+Create `src/data/avatars.test.ts`:
+
+```ts
+import { describe, it, expect, beforeEach } from "vitest";
+import { mkdtempSync, rmSync, existsSync, readFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { createAvatarStore } from "./avatars.js";
+
+let dir: string;
+
+beforeEach(() => {
+  dir = mkdtempSync(join(tmpdir(), "avatar-test-"));
+});
+
+describe("createAvatarStore", () => {
+  it("write returns a relative path under the store dir", () => {
+    const store = createAvatarStore(dir);
+    const buf = Buffer.from("fake-png");
+    const rel = store.write("bot-1", "image/png", buf);
+    expect(rel).toBe("bot-1.png");
+    expect(readFileSync(join(dir, "bot-1.png")).equals(buf)).toBe(true);
+  });
+
+  it("write picks correct extension for jpeg / webp", () => {
+    const store = createAvatarStore(dir);
+    expect(store.write("a", "image/jpeg", Buffer.from(""))).toBe("a.jpg");
+    expect(store.write("b", "image/webp", Buffer.from(""))).toBe("b.webp");
+  });
+
+  it("write rejects unsupported MIME types", () => {
+    const store = createAvatarStore(dir);
+    expect(() => store.write("c", "image/gif", Buffer.from(""))).toThrow(
+      /unsupported/i,
+    );
+  });
+
+  it("read returns the bytes for an existing file", () => {
+    const store = createAvatarStore(dir);
+    store.write("bot-1", "image/png", Buffer.from("hello"));
+    const buf = store.read("bot-1.png");
+    expect(buf?.equals(Buffer.from("hello"))).toBe(true);
+  });
+
+  it("read returns null when path is missing", () => {
+    const store = createAvatarStore(dir);
+    expect(store.read("missing.png")).toBeNull();
+  });
+
+  it("remove deletes the file (idempotent)", () => {
+    const store = createAvatarStore(dir);
+    store.write("bot-1", "image/png", Buffer.from("x"));
+    store.remove("bot-1.png");
+    expect(existsSync(join(dir, "bot-1.png"))).toBe(false);
+    expect(() => store.remove("bot-1.png")).not.toThrow();
+  });
+
+  it("write replaces any existing file for the same botId regardless of old extension", () => {
+    const store = createAvatarStore(dir);
+    store.write("bot-1", "image/png", Buffer.from("old"));
+    const rel = store.write("bot-1", "image/jpeg", Buffer.from("new"));
+    expect(rel).toBe("bot-1.jpg");
+    expect(existsSync(join(dir, "bot-1.png"))).toBe(false);
+    expect(existsSync(join(dir, "bot-1.jpg"))).toBe(true);
+  });
+});
+```
+
+- [ ] **Step 2: Run test to verify it fails**
+
+Run: `npx vitest run src/data/avatars.test.ts`
+Expected: FAIL — module not found
+
+- [ ] **Step 3: Implement the store**
+
+Create `src/data/avatars.ts`:
+
+```ts
+import { mkdirSync, writeFileSync, readFileSync, rmSync, readdirSync, existsSync } from "node:fs";
+import { join } from "node:path";
+
+const MIME_TO_EXT: Record<string, string> = {
+  "image/png": "png",
+  "image/jpeg": "jpg",
+  "image/webp": "webp",
+};
+
+export interface AvatarStore {
+  /** Returns the relative path written (e.g. "bot-1.png"). */
+  write(botId: string, mime: string, buffer: Buffer): string;
+  read(relPath: string): Buffer | null;
+  remove(relPath: string): void;
+  getDir(): string;
+}
+
+export function createAvatarStore(dir: string): AvatarStore {
+  if (!existsSync(dir)) mkdirSync(dir, { recursive: true });
+  return {
+    write(botId, mime, buffer) {
+      const ext = MIME_TO_EXT[mime];
+      if (!ext) throw new Error(`unsupported avatar MIME: ${mime}`);
+      // Remove any existing avatar for this bot regardless of extension.
+      for (const name of readdirSync(dir)) {
+        if (name.startsWith(`${botId}.`)) rmSync(join(dir, name), { force: true });
+      }
+      const rel = `${botId}.${ext}`;
+      writeFileSync(join(dir, rel), buffer);
+      return rel;
+    },
+    read(relPath) {
+      const full = join(dir, relPath);
+      if (!existsSync(full)) return null;
+      return readFileSync(full);
+    },
+    remove(relPath) {
+      rmSync(join(dir, relPath), { force: true });
+    },
+    getDir() {
+      return dir;
+    },
+  };
+}
+```
+
+- [ ] **Step 4: Run test to verify it passes**
+
+Run: `npx vitest run src/data/avatars.test.ts`
+Expected: PASS — all 7 tests
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/data/avatars.ts src/data/avatars.test.ts
+git commit -m "feat(data): avatar file store helper"
+```
+
+---
+
+### Task 3: BotProfileManager — custom avatar precedence
+
+**Files:**
+- Modify: `src/bot/profile.ts`
+- Create: `src/bot/profile.test.ts`
+
+- [ ] **Step 1: Write the failing test**
+
+Create `src/bot/profile.test.ts`:
+
+```ts
+import { describe, it, expect, beforeEach, vi } from "vitest";
+import { BotProfileManager } from "./profile.js";
+import type { TS3Client } from "../ts-protocol/client.js";
+
+function makeMockTs(): TS3Client & {
+  uploadCalls: Buffer[];
+  clearCalls: number;
+} {
+  const calls: Buffer[] = [];
+  let clears = 0;
+  const ts: any = {
+    uploadCalls: calls,
+    get clearCalls() { return clears; },
+    getHost: () => "127.0.0.1",
+    getHttpQuery: () => null,
+    fileTransferInitUpload: vi.fn().mockResolvedValue({}),
+    uploadFileData: vi.fn().mockImplementation(async (_h, _i, stream: any) => {
+      const chunks: Buffer[] = [];
+      for await (const c of stream) chunks.push(c as Buffer);
+      calls.push(Buffer.concat(chunks));
+    }),
+    fileTransferDeleteFile: vi.fn().mockResolvedValue(undefined),
+    sendCommandNoWait: vi.fn().mockImplementation(async (cmd: string) => {
+      if (/client_flag_avatar=$/.test(cmd)) clears++;
+    }),
+  };
+  return ts;
+}
+
+const noopLogger: any = { child: () => noopLogger, info: () => {}, debug: () => {}, warn: () => {}, error: () => {} };
+
+const cfgOn = { avatarEnabled: true, descriptionEnabled: false, nicknameEnabled: false, awayStatusEnabled: false, channelDescEnabled: false, nowPlayingMsgEnabled: false };
+const cfgOff = { ...cfgOn, avatarEnabled: false };
+
+describe("BotProfileManager custom avatar precedence", () => {
+  let ts: ReturnType<typeof makeMockTs>;
+  beforeEach(() => { ts = makeMockTs(); });
+
+  it("on stop with custom avatar set + sync on, uploads custom (does not clear)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    const custom = Buffer.from([1, 2, 3, 4]);
+    pm.setCustomAvatar(custom);
+    await pm.onSongChange(null);
+    expect(ts.uploadCalls.at(-1)?.equals(custom)).toBe(true);
+    expect(ts.clearCalls).toBe(0);
+  });
+
+  it("on stop with no custom avatar, falls back to clear", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    await pm.onSongChange(null);
+    expect(ts.clearCalls).toBe(1);
+    expect(ts.uploadCalls.length).toBe(0);
+  });
+
+  it("on connect with sync off + custom avatar set, applies custom immediately", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOff, "Bot");
+    pm.setCustomAvatar(Buffer.from([9, 9]));
+    await pm.onConnect();
+    expect(ts.uploadCalls.length).toBe(1);
+    expect(ts.uploadCalls[0].equals(Buffer.from([9, 9]))).toBe(true);
+  });
+
+  it("on connect with sync off + no custom avatar, does not touch avatar", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOff, "Bot");
+    await pm.onConnect();
+    expect(ts.uploadCalls.length).toBe(0);
+    expect(ts.clearCalls).toBe(0);
+  });
+
+  it("setCustomAvatar(null) makes subsequent onSongChange(null) clear again", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.setCustomAvatar(Buffer.from([1]));
+    pm.setCustomAvatar(null);
+    await pm.onSongChange(null);
+    expect(ts.clearCalls).toBe(1);
+  });
+});
+```
+
+- [ ] **Step 2: Run test to verify it fails**
+
+Run: `npx vitest run src/bot/profile.test.ts`
+Expected: FAIL — `pm.setCustomAvatar is not a function` and/or `onConnect` not exported
+
+- [ ] **Step 3: Look at the existing profile.ts to understand `onConnect` shape**
+
+Run: `grep -n 'onConnect\|public async\|public ' src/bot/profile.ts | head -10`
+
+`onConnect` likely already exists; if not, locate where reconnect resets state. Add or extend it.
+
+- [ ] **Step 4: Implement `customAvatar`, `setCustomAvatar`, `applyIdleAvatar`; modify `clearAvatar` and `onConnect`**
+
+In `src/bot/profile.ts`:
+
+1. Inside the class, add fields next to `defaultNickname` (around line 27):
+
+```ts
+  private customAvatar: Buffer | null = null;
+```
+
+2. After the `constructor`, add:
+
+```ts
+  /** Set/clear the persistent idle avatar. Pass null to remove. */
+  setCustomAvatar(buffer: Buffer | null): void {
+    this.customAvatar = buffer;
+  }
+```
+
+3. Find `clearAvatar()` (~line 173). Change the body so that if `this.customAvatar` is set, we upload it instead of clearing the flag. Replace the existing method with:
+
+```ts
+  private async clearAvatar(gen: number): Promise<void> {
+    if (this.customAvatar && this.customAvatar.length > 0) {
+      await this.applyIdleAvatar(gen);
+      return;
+    }
+    try {
+      await this.withTimeout(
+        this.tsClient.fileTransferDeleteFile(0n, ["/avatar"]),
+        FILE_TRANSFER_TIMEOUT_MS,
+      );
+    } catch {
+      // File may not exist or transfer timed out — that's fine
+    }
+    if (this.generation !== gen) return;
+    try {
+      await this.tsClient.sendCommandNoWait("clientupdate client_flag_avatar=");
+    } catch (err) {
+      this.handleFeatureError("avatar", err);
+    }
+  }
+```
+
+4. Add a new private method right below `clearAvatar`:
+
+```ts
+  private async applyIdleAvatar(gen: number): Promise<void> {
+    if (!this.customAvatar || this.customAvatar.length === 0) return;
+    if (this.permDenied.avatar) return;
+    try {
+      await this.withTimeout(this.doAvatarUpload(this.customAvatar), FILE_TRANSFER_TIMEOUT_MS);
+      if (this.generation !== gen) return;
+      this.logger.info({ bytes: this.customAvatar.length }, "Idle (custom) avatar applied");
+    } catch (err) {
+      this.handleFeatureError("avatar", err);
+    }
+  }
+```
+
+5. Find `onConnect` (the existing method that resets per-feature flags). At its end, immediately after the `permDenied` reset, add:
+
+```ts
+    if (!this.config.avatarEnabled && this.customAvatar) {
+      const gen = ++this.generation;
+      void this.applyIdleAvatar(gen);
+    }
+```
+
+If `onConnect` does not exist as a method, search for where reconnect resets `permDenied` and add the block there.
+
+- [ ] **Step 5: Run test to verify it passes**
+
+Run: `npx vitest run src/bot/profile.test.ts`
+Expected: PASS — 5/5
+
+Run also: `npx vitest run src/audio src/data src/bot` — confirm no regressions.
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/bot/profile.ts src/bot/profile.test.ts
+git commit -m "feat(profile): custom avatar with idle/playback precedence"
+```
+
+---
+
+### Task 4: Wire avatar load on bot start
+
+**Files:**
+- Modify: `src/bot/instance.ts`
+- Modify: `src/bot/manager.ts` (if it constructs the instance)
+- Modify: `src/index.ts`
+
+- [ ] **Step 1: Confirm where `BotProfileManager` is constructed and how `BotInstance` receives DB**
+
+Run: `grep -n 'new BotProfileManager\|profileManager =\|database\|botDb' src/bot/instance.ts src/bot/manager.ts | head -20`
+
+Identify the BotInstance constructor params and verify that the DB and the avatar dir can flow in.
+
+- [ ] **Step 2: Add `AVATAR_DIR` constant + `avatarStore` to `src/index.ts`**
+
+Find where `COOKIE_DIR` / `createCookieStore` are set up (~line 48 in src/index.ts) and add directly after:
+
+```ts
+const AVATAR_DIR = process.env.AVATAR_DIR ?? join(DATA_DIR, "avatars");
+const avatarStore = createAvatarStore(AVATAR_DIR);
+```
+
+(import as needed: `import { createAvatarStore } from "./data/avatars.js";`)
+
+Pass `avatarStore` through to whatever constructs `BotManager` (and from there to `BotInstance`).
+
+- [ ] **Step 3: In `BotInstance`, after `profileManager` is created, load the avatar from disk if any**
+
+In `src/bot/instance.ts`, after `this.profileManager = new BotProfileManager(...)`:
+
+```ts
+const relPath = this.botDb.getCustomAvatarPath(this.id);
+if (relPath) {
+  const buf = this.avatarStore.read(relPath);
+  if (buf) this.profileManager.setCustomAvatar(buf);
+}
+```
+
+(Add `private botDb: BotDatabase` and `private avatarStore: AvatarStore` constructor params; thread them down from `BotManager.createBot()` / `BotManager` constructor.)
+
+- [ ] **Step 4: Add `getProfileManager()` accessor if not present**
+
+If grep already shows `getProfileManager(): BotProfileManager`, skip. Otherwise add a public method that returns `this.profileManager`.
+
+- [ ] **Step 5: Build and run the existing tests**
+
+Run: `npx tsc --noEmit`
+Expected: no TS errors
+
+Run: `npm test`
+Expected: all green
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/index.ts src/bot/instance.ts src/bot/manager.ts
+git commit -m "feat(bot): load custom avatar on instance startup"
+```
+
+---
+
+### Task 5: REST endpoints for avatar upload / fetch / delete
+
+**Files:**
+- Modify: `src/web/server.ts` (json size limit)
+- Modify: `src/web/api/bot.ts`
+
+- [ ] **Step 1: Bump express.json size limit**
+
+In `src/web/server.ts`, find `app.use(express.json())` (~line 46) and change to:
+
+```ts
+app.use(express.json({ limit: "400kb" }));
+```
+
+(Avatar payload is base64-encoded ≤200 KB → ~270 KB on the wire; 400 KB gives margin.)
+
+- [ ] **Step 2: Write a failing API test (use supertest if not present, otherwise inline fetch)**
+
+Run: `grep -E '"supertest"|"vitest"' package.json`
+
+If supertest is not present, write the test using `node:http` raw client or skip API integration test and rely on manual + unit tests on Task 7. Don't add new deps unless approved.
+
+If supertest IS present, add `src/web/api/bot.test.ts`:
+
+```ts
+import { describe, it, expect } from "vitest";
+import request from "supertest";
+import express from "express";
+import { createBotRouter } from "./bot.js";
+// ... build minimal app with mocked manager + DB + avatarStore
+```
+
+If not present: skip Step 2, jump to Step 3 and verify by manual curl in Step 5.
+
+- [ ] **Step 3: Add the three endpoints**
+
+In `src/web/api/bot.ts`, modify the factory signature to accept `avatarStore` and `botDb`:
+
+```ts
+export function createBotRouter(
+  botManager: BotManager,
+  config: BotConfig,
+  configPath: string,
+  logger: Logger,
+  botDb: BotDatabase,
+  avatarStore: AvatarStore,
+): Router {
+```
+
+Inside the router, after the existing `/:id/config` GET, add:
+
+```ts
+  router.get("/:id/avatar", (req, res) => {
+    const path = botDb.getCustomAvatarPath(req.params.id);
+    if (!path) { res.status(404).end(); return; }
+    const buf = avatarStore.read(path);
+    if (!buf) { res.status(404).end(); return; }
+    const ext = path.split(".").pop()!;
+    const mime = ext === "png" ? "image/png" : ext === "webp" ? "image/webp" : "image/jpeg";
+    res.set("Content-Type", mime);
+    res.set("Cache-Control", "no-cache");
+    res.send(buf);
+  });
+
+  router.put("/:id/avatar", (req, res) => {
+    const bot = botManager.getBot(req.params.id);
+    if (!bot && !botDb.getBotInstances().some((b) => b.id === req.params.id)) {
+      res.status(404).json({ error: "Bot not found" });
+      return;
+    }
+    const { dataUrl } = req.body as { dataUrl?: string };
+    if (typeof dataUrl !== "string") {
+      res.status(400).json({ error: "dataUrl required" });
+      return;
+    }
+    const m = /^data:(image\/(png|jpeg|webp));base64,(.+)$/.exec(dataUrl);
+    if (!m) {
+      res.status(400).json({ error: "dataUrl must be image/png|jpeg|webp base64" });
+      return;
+    }
+    const mime = m[1];
+    const buf = Buffer.from(m[3], "base64");
+    if (buf.length > 200 * 1024) {
+      res.status(413).json({ error: "avatar exceeds 200KB limit" });
+      return;
+    }
+    const rel = avatarStore.write(req.params.id, mime, buf);
+    botDb.setCustomAvatarPath(req.params.id, rel);
+    bot?.getProfileManager().setCustomAvatar(buf);
+    res.json({ path: rel });
+  });
+
+  router.delete("/:id/avatar", (req, res) => {
+    const path = botDb.getCustomAvatarPath(req.params.id);
+    if (path) avatarStore.remove(path);
+    botDb.setCustomAvatarPath(req.params.id, null);
+    const bot = botManager.getBot(req.params.id);
+    bot?.getProfileManager().setCustomAvatar(null);
+    res.status(204).end();
+  });
+```
+
+- [ ] **Step 4: Update the call site that constructs the router**
+
+Search: `grep -n 'createBotRouter' src/`
+
+In the call site (likely `src/web/server.ts` or `src/index.ts`), pass the new args. Fix the call signature.
+
+- [ ] **Step 5: Manual smoke test**
+
+Run: `npm run build && npm run start`
+In another terminal:
+
+```bash
+# create a small valid PNG (1x1) base64
+B64=$(node -e "console.log(Buffer.from([137,80,78,71,13,10,26,10,0,0,0,13,73,72,68,82,0,0,0,1,0,0,0,1,8,2,0,0,0,144,119,83,222,0,0,0,12,73,68,65,84,8,153,99,248,255,255,63,0,5,254,2,254,205,250,236,184,0,0,0,0,73,69,78,68,174,66,96,130]).toString('base64'))")
+
+curl -X PUT http://localhost:3000/api/bot/<BOT_ID>/avatar \
+  -H 'Content-Type: application/json' \
+  -d "{\"dataUrl\":\"data:image/png;base64,$B64\"}"
+
+curl http://localhost:3000/api/bot/<BOT_ID>/avatar -o /tmp/x.png
+file /tmp/x.png
+
+curl -X DELETE http://localhost:3000/api/bot/<BOT_ID>/avatar -i
+```
+
+Expected: PUT returns `{"path":"<id>.png"}`, GET returns the bytes, DELETE returns 204.
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/web/server.ts src/web/api/bot.ts src/index.ts
+git commit -m "feat(api): /api/bot/:id/avatar GET/PUT/DELETE"
+```
+
+---
+
+### Task 6: Frontend — `AvatarUpload.vue` component
+
+**Files:**
+- Create: `web/src/components/AvatarUpload.vue`
+
+- [ ] **Step 1: Create the component**
+
+```vue
+<template>
+  <div class="avatar-upload">
+    <div class="preview" :class="{ empty: !previewUrl }">
+      <img v-if="previewUrl" :src="previewUrl" alt="avatar" />
+      <Icon v-else icon="mdi:account-circle-outline" />
+    </div>
+    <div class="actions">
+      <input
+        ref="fileInput"
+        type="file"
+        accept="image/png,image/jpeg,image/webp"
+        class="hidden"
+        @change="onFile"
+      />
+      <button type="button" class="btn-sm" @click="fileInput?.click()">
+        {{ previewUrl ? '更换' : '上传' }}
+      </button>
+      <button v-if="previewUrl" type="button" class="btn-sm btn-danger" @click="clear">
+        删除
+      </button>
+    </div>
+    <p v-if="error" class="hint error">{{ error }}</p>
+    <p v-else class="hint">PNG / JPG / WebP，≤200 KB</p>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, watch } from 'vue';
+import { Icon } from '@iconify/vue';
+
+const props = defineProps<{ modelValue: string | null }>();
+const emit = defineEmits<{ 'update:modelValue': [value: string | null] }>();
+
+const previewUrl = ref<string | null>(props.modelValue);
+const error = ref<string | null>(null);
+const fileInput = ref<HTMLInputElement | null>(null);
+
+watch(() => props.modelValue, (v) => { previewUrl.value = v; });
+
+function onFile(ev: Event) {
+  const file = (ev.target as HTMLInputElement).files?.[0];
+  if (!file) return;
+  if (!['image/png', 'image/jpeg', 'image/webp'].includes(file.type)) {
+    error.value = '仅支持 PNG / JPG / WebP';
+    return;
+  }
+  if (file.size > 200 * 1024) {
+    error.value = `图片 ${(file.size / 1024).toFixed(0)} KB 超过 200 KB 上限`;
+    return;
+  }
+  error.value = null;
+  const reader = new FileReader();
+  reader.onload = () => {
+    const dataUrl = reader.result as string;
+    previewUrl.value = dataUrl;
+    emit('update:modelValue', dataUrl);
+  };
+  reader.readAsDataURL(file);
+}
+
+function clear() {
+  previewUrl.value = null;
+  emit('update:modelValue', null);
+  if (fileInput.value) fileInput.value.value = '';
+}
+</script>
+
+<style lang="scss" scoped>
+.avatar-upload { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
+.preview {
+  width: 80px; height: 80px; border-radius: 50%;
+  background: var(--bg-card); display: flex; align-items: center; justify-content: center;
+  overflow: hidden;
+  img { width: 100%; height: 100%; object-fit: cover; }
+  &.empty :deep(svg) { font-size: 48px; opacity: 0.4; }
+}
+.actions { display: flex; gap: 8px; }
+.hidden { display: none; }
+.hint { font-size: 12px; opacity: 0.6; margin: 0; }
+.hint.error { color: var(--color-danger, #e85060); opacity: 1; }
+.btn-danger { color: var(--color-danger, #e85060); }
+</style>
+```
+
+- [ ] **Step 2: Verify the component compiles**
+
+Run: `cd web && npx vue-tsc --noEmit`
+Expected: no errors
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add web/src/components/AvatarUpload.vue
+git commit -m "feat(web): AvatarUpload component"
+```
+
+---
+
+### Task 7: Wire AvatarUpload into Settings.vue (create + edit + standalone row)
+
+**Files:**
+- Modify: `web/src/views/Settings.vue`
+
+- [ ] **Step 1: Read the relevant Settings.vue regions**
+
+```bash
+grep -n '同步头像\|openEditBot\|saveEditBot\|createBot\|create-bot\|profile-features\|features.find' web/src/views/Settings.vue | head -20
+```
+
+Identify:
+- Create-bot form template region (`<div class="create-bot">` block)
+- Edit-bot modal/dialog template region
+- The profile features table where `avatarEnabled` row lives
+
+- [ ] **Step 2: Add component import + reactive state for avatar dataUrl on the create-bot form**
+
+In the script setup region, near other `newBot*` refs:
+
+```ts
+import AvatarUpload from '../components/AvatarUpload.vue';
+const newBotAvatar = ref<string | null>(null);
+```
+
+- [ ] **Step 3: Insert `<AvatarUpload v-model="newBotAvatar" />` into the create-bot form template**
+
+In the `<div class="create-bot">` block, right before `<button class="btn-primary" @click="createBot">创建</button>`, add:
+
+```vue
+        <div class="form-row">
+          <label>自定义头像（可选）</label>
+          <AvatarUpload v-model="newBotAvatar" />
+        </div>
+```
+
+- [ ] **Step 4: After successful `createBot()`, PUT the avatar if set**
+
+Find the `createBot` async function. After the POST resolves and the bot id is known (`res.data.id` or similar), append:
+
+```ts
+if (newBotAvatar.value) {
+  await axios.put(`/api/bot/${res.data.id}/avatar`, { dataUrl: newBotAvatar.value });
+}
+newBotAvatar.value = null;
+```
+
+- [ ] **Step 5: Add an "自定义头像" row in the per-bot profile features table**
+
+Find the profile-features table render (look for the `features` array iteration). The cleanest path: add a custom row OUTSIDE the array (since it isn't a boolean toggle). Right before `</template>` of the bot row, add:
+
+```vue
+        <div class="feature-row">
+          <div class="feature-label">自定义头像</div>
+          <div class="feature-control">
+            <CustomAvatarRow :bot-id="bot.id" />
+          </div>
+        </div>
+```
+
+Where `CustomAvatarRow` is an inline-defined component or a small file `web/src/components/CustomAvatarRow.vue` that:
+- Mounts → `axios.get(/api/bot/<id>/avatar, { responseType: 'blob' })` → previews if 200, ignore 404
+- Wraps `<AvatarUpload>` and on `update:modelValue`:
+  - If string → `axios.put(/avatar, { dataUrl })`
+  - If null → `axios.delete(/avatar)`
+
+Create `web/src/components/CustomAvatarRow.vue` with that logic; keep its body small (~50 lines).
+
+- [ ] **Step 6: Build and visually verify**
+
+Run: `cd web && npm run build` → no errors. Then `npm run dev` → open create-instance, upload PNG, create — verify the avatar appears on the bot in TS3 once it connects. Check edit/Settings flow.
+
+- [ ] **Step 7: Commit**
+
+```bash
+git add web/src/views/Settings.vue web/src/components/CustomAvatarRow.vue
+git commit -m "feat(web): custom avatar in create-bot + Settings"
+```
+
+---
+
+### Task 8: Open PR
+
+- [ ] **Step 1: Push the branch**
+
+```bash
+git checkout -b feat/custom-bot-avatar
+git push -u origin feat/custom-bot-avatar
+```
+
+(If commits were already on `main`, instead create the branch from the first relevant commit and reset main: `git branch feat/custom-bot-avatar HEAD && git reset --hard origin/main && git checkout feat/custom-bot-avatar`. The exact sequence depends on the working state when starting.)
+
+- [ ] **Step 2: Create the PR**
+
+```bash
+gh pr create --title "feat(profile): custom bot avatar" --body "Closes part of #51 (avatar half).
+
+## Summary
+- New /api/bot/:id/avatar GET/PUT/DELETE
+- BotProfileManager: custom avatar acts as idle image; cover sync still wins during playback when avatarEnabled=true
+- AvatarUpload component used in create-bot form and Settings per-bot row
+- Bump express.json limit to 400kb to allow base64 payload
+
+## Behavior matrix
+| avatarEnabled | custom set | playing | stopped |
+|---|---|---|---|
+| ✓ | ✓ | cover | restore custom |
+| ✓ | ✗ | cover | clear |
+| ✗ | ✓ | custom | custom |
+| ✗ | ✗ | no-op | no-op |
+
+## Test plan
+- [x] vitest covers DB, avatar store, ProfileManager precedence
+- [x] Manual: upload PNG → bot avatar shows; play song → cover; stop → custom; delete → cleared
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)"
+```
+
+---
+
+## Self-Review Checklist
+
+- [x] Each spec section has at least one task: precedence matrix → Task 3; storage → Task 2; DB → Task 1; API → Task 5; UI → Task 6+7
+- [x] No "TBD" / "fill in" / "implement later" text in any step
+- [x] Type names consistent: `AvatarStore` / `createAvatarStore` / `getCustomAvatarPath` / `setCustomAvatarPath` / `setCustomAvatar` (singular per call site)
+- [x] All code blocks compile under existing TS/Vue config (express 5, vitest, vue 3 + iconify already in use)

docs/superpowers/plans/2026-05-30-account-permissions.md

@@ -0,0 +1,811 @@
+# Account Permissions Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Let an admin grant each member account a set of capabilities and a list of bots they may control, enforced on the backend.
+
+**Architecture:** Capability tokens + per-member bot allow-list stored in two new SQLite tables, loaded onto `req.user` per request (live, no re-login), enforced by `requirePermission` / `requireBotAccess` middleware mirroring the existing `requireAdmin`. Admin stays a super-user. Existing members are backfilled to full access on upgrade; new members get a basic tier. The Vue UI hides what a member can't do and gives admins a permission editor.
+
+**Tech Stack:** Node ESM + TypeScript, Express, better-sqlite3, Vitest + supertest, Vue 3 + Pinia.
+
+**Spec:** `docs/superpowers/specs/2026-05-30-account-permissions-design.md`
+
+**Conventions:** All file paths are repo-relative. Tests run with `npx vitest run <path>`. Backend is TDD (test first, watch fail, implement, watch pass, commit). Commit after each task.
+
+---
+
+## File Structure
+
+**Create:**
+- `src/data/permissions.ts` — capability constants + `PermissionStore` (tables accessed here)
+- `src/data/permissions.test.ts` — store + constants tests
+- `src/web/middleware/requirePermission.ts` — `requirePermission(cap)` + `requireBotAccess(param)`
+- `src/web/middleware/requirePermission.test.ts` — middleware tests
+
+**Modify:**
+- `src/data/database.ts` — `initTables`: add the two tables + index; migration backfill of existing members
+- `src/data/audit.ts` — add `"user.permissions_changed"` to `AuditAction`
+- `src/web/middleware/requireAuth.ts` — widen `req.user`; load capabilities + bot access
+- `src/web/auth/validateSession.ts` — (no change; just confirm) — actually unchanged
+- `src/web/api/session.ts` — `/me` returns capabilities + bots; inline auth attaches them
+- `src/web/server.ts` — construct `PermissionStore`, pass into routers/middleware
+- `src/web/api/player.ts` — `requireBotAccess` on `/:botId`; per-route `requirePermission`
+- `src/web/api/bot.ts` — `requirePermission("bot.manage")` + `requireBotAccess("id")`
+- `src/web/api/auth.ts` — `requirePermission("platform.auth")`
+- `src/web/api/music.ts` — `requirePermission("quality")` on the quality POST; filter `GET /api/bot`? no — bot list is in bot.ts
+- `src/web/api/bot.ts` — filter `GET /` to allowed bots for members
+- `src/web/api/users.ts` — `GET/PUT /api/users/:id/permissions`
+- `src/bot/manager.ts` — `removeBot` calls `permissions.pruneBot(botId)`
+- Frontend: `web/src/composables/useSession.ts`, `web/src/components/Navbar.vue`, `web/src/components/Player.vue`, `web/src/views/Settings.vue`, `web/src/stores/player.ts`
+
+---
+
+## Task 1: Capability constants + PermissionStore + tables
+
+**Files:**
+- Create: `src/data/permissions.ts`
+- Create: `src/data/permissions.test.ts`
+- Modify: `src/data/database.ts` (initTables)
+
+- [ ] **Step 1: Write the failing test**
+
+`src/data/permissions.test.ts`:
+
+```typescript
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
+import fs from "node:fs";
+import path from "node:path";
+import os from "node:os";
+import { createDatabase, type BotDatabase } from "./database.js";
+import { createPermissionStore } from "./permissions.js";
+import { CAPABILITIES, BASIC_TIER_CAPABILITIES } from "./permissions.js";
+
+describe("PermissionStore", () => {
+  let dbFile: string;
+  let db: BotDatabase;
+
+  beforeEach(() => {
+    dbFile = path.join(os.tmpdir(), `perm-test-${Date.now()}-${Math.random().toString(36).slice(2)}.db`);
+    db = createDatabase(dbFile);
+    // a user row is required for FK; insert directly
+    db.db.prepare(
+      "INSERT INTO users (id, username, passwordHash, createdAt, updatedAt, role) VALUES (?,?,?,?,?,?)"
+    ).run("u1", "alice", "x", Date.now(), Date.now(), "member");
+  });
+
+  afterEach(() => {
+    db.close();
+    try { fs.rmSync(dbFile, { force: true }); } catch {}
+    try { fs.rmSync(dbFile + "-wal", { force: true }); } catch {}
+    try { fs.rmSync(dbFile + "-shm", { force: true }); } catch {}
+  });
+
+  it("exposes the five capability tokens and a basic tier", () => {
+    expect(CAPABILITIES).toEqual([
+      "player.control", "player.queue", "bot.manage", "platform.auth", "quality",
+    ]);
+    expect(BASIC_TIER_CAPABILITIES).toEqual(["player.control", "player.queue"]);
+  });
+
+  it("defaults to no capabilities and no bots", () => {
+    const store = createPermissionStore(db.db);
+    expect(store.getCapabilities("u1")).toEqual([]);
+    expect(store.getBotAccess("u1")).toEqual([]);
+  });
+
+  it("round-trips capabilities and a specific bot list", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control", "quality"], bots: ["botA", "botB"] });
+    expect(store.getCapabilities("u1").sort()).toEqual(["player.control", "quality"]);
+    expect(store.getBotAccess("u1")).toEqual(["botA", "botB"]);
+  });
+
+  it("stores the all-bots flag as 'all'", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control"], bots: "all" });
+    expect(store.getBotAccess("u1")).toBe("all");
+  });
+
+  it("setPermissions replaces prior capabilities and bots", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control"], bots: ["botA"] });
+    store.setPermissions("u1", { capabilities: ["quality"], bots: "all" });
+    expect(store.getCapabilities("u1")).toEqual(["quality"]);
+    expect(store.getBotAccess("u1")).toBe("all");
+  });
+
+  it("ignores unknown capability tokens", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control", "bogus" as any], bots: [] });
+    expect(store.getCapabilities("u1")).toEqual(["player.control"]);
+  });
+
+  it("pruneBot removes a bot from every user's allow-list", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: [], bots: ["botA", "botB"] });
+    store.pruneBot("botA");
+    expect(store.getBotAccess("u1")).toEqual(["botB"]);
+  });
+});
+```
+
+- [ ] **Step 2: Run test to verify it fails**
+
+Run: `npx vitest run src/data/permissions.test.ts`
+Expected: FAIL — `createPermissionStore` / `CAPABILITIES` not found (module missing).
+
+- [ ] **Step 3: Create `src/data/permissions.ts`**
+
+```typescript
+import type Database from "better-sqlite3";
+
+export const CAPABILITIES = [
+  "player.control",
+  "player.queue",
+  "bot.manage",
+  "platform.auth",
+  "quality",
+] as const;
+export type Capability = (typeof CAPABILITIES)[number];
+
+/** Marker token stored in user_permissions meaning "all bots, incl. future". */
+export const BOTS_ALL = "bots.all";
+
+/** Capabilities granted to a newly-created member by default. */
+export const BASIC_TIER_CAPABILITIES: Capability[] = ["player.control", "player.queue"];
+
+export function isCapability(x: string): x is Capability {
+  return (CAPABILITIES as readonly string[]).includes(x);
+}
+
+export type BotAccess = "all" | string[];
+
+export interface PermissionStore {
+  getCapabilities(userId: string): Capability[];
+  getBotAccess(userId: string): BotAccess;
+  setPermissions(userId: string, input: { capabilities: string[]; bots: BotAccess }): void;
+  pruneBot(botId: string): void;
+}
+
+export function createPermissionStore(db: Database.Database): PermissionStore {
+  const selCaps = db.prepare("SELECT permission FROM user_permissions WHERE userId = ?");
+  const delCaps = db.prepare("DELETE FROM user_permissions WHERE userId = ?");
+  const insCap = db.prepare("INSERT OR IGNORE INTO user_permissions (userId, permission) VALUES (?, ?)");
+  const selBots = db.prepare("SELECT botId FROM user_bot_access WHERE userId = ?");
+  const delBots = db.prepare("DELETE FROM user_bot_access WHERE userId = ?");
+  const insBot = db.prepare("INSERT OR IGNORE INTO user_bot_access (userId, botId) VALUES (?, ?)");
+  const pruneBotStmt = db.prepare("DELETE FROM user_bot_access WHERE botId = ?");
+
+  return {
+    getCapabilities(userId) {
+      return (selCaps.all(userId) as { permission: string }[])
+        .map((r) => r.permission)
+        .filter((p): p is Capability => isCapability(p));
+    },
+    getBotAccess(userId) {
+      const all = (selCaps.all(userId) as { permission: string }[]).some((r) => r.permission === BOTS_ALL);
+      if (all) return "all";
+      return (selBots.all(userId) as { botId: string }[]).map((r) => r.botId);
+    },
+    setPermissions(userId, input) {
+      const caps = input.capabilities.filter(isCapability);
+      const tx = db.transaction(() => {
+        delCaps.run(userId);
+        delBots.run(userId);
+        for (const c of caps) insCap.run(userId, c);
+        if (input.bots === "all") {
+          insCap.run(userId, BOTS_ALL);
+        } else {
+          for (const b of input.bots) insBot.run(userId, b);
+        }
+      });
+      tx();
+    },
+    pruneBot(botId) {
+      pruneBotStmt.run(botId);
+    },
+  };
+}
+```
+
+- [ ] **Step 4: Add tables in `src/data/database.ts` initTables**
+
+Find `initTables` (creates users/sessions/user_audit). Add, after the `user_audit` CREATE:
+
+```typescript
+  db.exec(`
+    CREATE TABLE IF NOT EXISTS user_permissions (
+      userId     TEXT NOT NULL,
+      permission TEXT NOT NULL,
+      PRIMARY KEY (userId, permission),
+      FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+    );
+    CREATE TABLE IF NOT EXISTS user_bot_access (
+      userId TEXT NOT NULL,
+      botId  TEXT NOT NULL,
+      PRIMARY KEY (userId, botId),
+      FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+    );
+    CREATE INDEX IF NOT EXISTS idx_user_bot_access_userId ON user_bot_access(userId);
+  `);
+```
+
+(If `initTables` uses individual `db.exec` calls, match that style. The `BotDatabase` type already exposes `.db` and `.close()` — confirm by reading the file; the test uses `db.db` and `db.close()`.)
+
+- [ ] **Step 5: Run tests to verify they pass**
+
+Run: `npx vitest run src/data/permissions.test.ts`
+Expected: PASS (7 tests).
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/data/permissions.ts src/data/permissions.test.ts src/data/database.ts
+git commit -m "feat(perm): permission store + capability tokens + tables"
+```
+
+---
+
+## Task 2: requirePermission + requireBotAccess middleware
+
+**Files:**
+- Create: `src/web/middleware/requirePermission.ts`
+- Create: `src/web/middleware/requirePermission.test.ts`
+- Modify: `src/web/middleware/requireAuth.ts` (widen `req.user`)
+
+- [ ] **Step 1: Widen the `req.user` augmentation in `src/web/middleware/requireAuth.ts`**
+
+Change the `declare module` block so `req.user` carries capabilities + bot access:
+
+```typescript
+declare module "express-serve-static-core" {
+  interface Request {
+    user?: {
+      id: string;
+      username: string;
+      role: "admin" | "member";
+      capabilities: Set<string>;
+      bots: "all" | Set<string>;
+    };
+  }
+}
+```
+
+(The loading of these fields is done in Task 4 — for now this only widens the type. Existing assignments to `req.user` will fail to typecheck until Task 4; that is expected and Task 4 fixes them. If you need the build green between tasks, do Task 2 + Task 4 back-to-back before running `tsc`.)
+
+- [ ] **Step 2: Write the failing middleware test**
+
+`src/web/middleware/requirePermission.test.ts`:
+
+```typescript
+import { describe, it, expect } from "vitest";
+import express from "express";
+import request from "supertest";
+import { requirePermission, requireBotAccess } from "./requirePermission.js";
+
+function appWith(user: any) {
+  const app = express();
+  app.use((req, _res, next) => { (req as any).user = user; next(); });
+  app.post("/cap", requirePermission("quality"), (_req, res) => res.json({ ok: true }));
+  app.post("/bot/:botId", requireBotAccess("botId"), (_req, res) => res.json({ ok: true }));
+  return app;
+}
+
+const member = (caps: string[], bots: "all" | string[]) => ({
+  id: "u1", username: "a", role: "member",
+  capabilities: new Set(caps), bots: bots === "all" ? "all" : new Set(bots),
+});
+const admin = { id: "a", username: "admin", role: "admin", capabilities: new Set(), bots: "all" };
+
+describe("requirePermission", () => {
+  it("401 when unauthenticated", async () => {
+    const app = express();
+    app.post("/cap", requirePermission("quality"), (_r, res) => res.json({ ok: true }));
+    expect((await request(app).post("/cap")).status).toBe(401);
+  });
+  it("403 when member lacks the capability", async () => {
+    expect((await request(appWith(member([], "all"))).post("/cap")).status).toBe(403);
+  });
+  it("200 when member has the capability", async () => {
+    expect((await request(appWith(member(["quality"], "all"))).post("/cap")).status).toBe(200);
+  });
+  it("200 for admin regardless of capabilities", async () => {
+    expect((await request(appWith(admin)).post("/cap")).status).toBe(200);
+  });
+});
+
+describe("requireBotAccess", () => {
+  it("200 when bots = all", async () => {
+    expect((await request(appWith(member([], "all"))).post("/bot/b1")).status).toBe(200);
+  });
+  it("200 when botId in allow-list", async () => {
+    expect((await request(appWith(member([], ["b1"]))).post("/bot/b1")).status).toBe(200);
+  });
+  it("403 when botId not in allow-list", async () => {
+    expect((await request(appWith(member([], ["b2"]))).post("/bot/b1")).status).toBe(403);
+  });
+  it("200 for admin", async () => {
+    expect((await request(appWith(admin)).post("/bot/b1")).status).toBe(200);
+  });
+});
+```
+
+- [ ] **Step 3: Run test to verify it fails**
+
+Run: `npx vitest run src/web/middleware/requirePermission.test.ts`
+Expected: FAIL — module `./requirePermission.js` not found.
+
+- [ ] **Step 4: Create `src/web/middleware/requirePermission.ts`**
+
+```typescript
+import type { Request, Response, NextFunction, RequestHandler } from "express";
+
+export function requirePermission(capability: string): RequestHandler {
+  return (req: Request, res: Response, next: NextFunction) => {
+    if (!req.user) { res.status(401).json({ error: "unauthenticated" }); return; }
+    if (req.user.role === "admin" || req.user.capabilities.has(capability)) { next(); return; }
+    res.status(403).json({ error: "forbidden" });
+  };
+}
+
+export function requireBotAccess(paramName = "botId"): RequestHandler {
+  return (req: Request, res: Response, next: NextFunction) => {
+    if (!req.user) { res.status(401).json({ error: "unauthenticated" }); return; }
+    if (req.user.role === "admin" || req.user.bots === "all") { next(); return; }
+    const botId = req.params[paramName];
+    if (botId && req.user.bots.has(botId)) { next(); return; }
+    res.status(403).json({ error: "forbidden" });
+  };
+}
+```
+
+- [ ] **Step 5: Run test to verify it passes**
+
+Run: `npx vitest run src/web/middleware/requirePermission.test.ts`
+Expected: PASS (8 tests).
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/web/middleware/requirePermission.ts src/web/middleware/requirePermission.test.ts src/web/middleware/requireAuth.ts
+git commit -m "feat(perm): requirePermission + requireBotAccess middleware"
+```
+
+---
+
+## Task 3: Effective-permissions resolver (admin = all)
+
+**Files:**
+- Modify: `src/data/permissions.ts` (add `resolveContext` helper)
+- Modify: `src/data/permissions.test.ts` (add tests)
+
+- [ ] **Step 1: Add failing tests** to `src/data/permissions.test.ts`:
+
+```typescript
+import { resolvePermissionContext } from "./permissions.js";
+
+describe("resolvePermissionContext", () => {
+  it("admin gets all capabilities and all bots regardless of stored rows", () => {
+    const store = createPermissionStore(db.db);
+    const ctx = resolvePermissionContext("admin", "u1", store);
+    expect([...ctx.capabilities].sort()).toEqual([...CAPABILITIES].sort());
+    expect(ctx.bots).toBe("all");
+  });
+  it("member reflects stored capabilities + bot access", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control"], bots: ["b1"] });
+    const ctx = resolvePermissionContext("member", "u1", store);
+    expect([...ctx.capabilities]).toEqual(["player.control"]);
+    expect(ctx.bots).toEqual(new Set(["b1"]));
+  });
+});
+```
+
+- [ ] **Step 2: Run to verify fail**
+
+Run: `npx vitest run src/data/permissions.test.ts`
+Expected: FAIL — `resolvePermissionContext` not exported.
+
+- [ ] **Step 3: Add to `src/data/permissions.ts`**
+
+```typescript
+export interface PermissionContext {
+  capabilities: Set<string>;
+  bots: "all" | Set<string>;
+}
+
+export function resolvePermissionContext(
+  role: "admin" | "member",
+  userId: string,
+  store: PermissionStore
+): PermissionContext {
+  if (role === "admin") {
+    return { capabilities: new Set(CAPABILITIES), bots: "all" };
+  }
+  const access = store.getBotAccess(userId);
+  return {
+    capabilities: new Set(store.getCapabilities(userId)),
+    bots: access === "all" ? "all" : new Set(access),
+  };
+}
+```
+
+- [ ] **Step 4: Run to verify pass**
+
+Run: `npx vitest run src/data/permissions.test.ts`
+Expected: PASS.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/data/permissions.ts src/data/permissions.test.ts
+git commit -m "feat(perm): resolvePermissionContext (admin = super-user)"
+```
+
+---
+
+## Task 4: Load permissions onto req.user (requireAuth + session inline + /me)
+
+**Files:**
+- Modify: `src/web/middleware/requireAuth.ts`
+- Modify: `src/web/api/session.ts`
+- Modify: `src/web/server.ts`
+
+- [ ] **Step 1: Thread `PermissionStore` into `createRequireAuth`**
+
+`src/web/middleware/requireAuth.ts` — change the factory signature and set the new fields:
+
+```typescript
+import { resolvePermissionContext, type PermissionStore } from "../../data/permissions.js";
+
+export function createRequireAuth(sessions: SessionStore, permissions: PermissionStore): RequestHandler {
+  return function requireAuth(req, res, next) {
+    const result = validateSessionFromHeaders(req.headers.cookie, sessions);
+    if (!result) {
+      res.clearCookie(SESSION_COOKIE_NAME, { path: "/" });
+      res.status(401).json({ error: "unauthenticated" });
+      return;
+    }
+    const ctx = resolvePermissionContext(result.role, result.userId, permissions);
+    req.user = {
+      id: result.userId, username: result.username, role: result.role,
+      capabilities: ctx.capabilities, bots: ctx.bots,
+    };
+    const token = extractSessionToken(req.headers.cookie);
+    if (token) {
+      res.cookie(SESSION_COOKIE_NAME, token, {
+        httpOnly: true, sameSite: "lax", secure: req.secure, path: "/", maxAge: SESSION_TTL_MS,
+      });
+    }
+    next();
+  };
+}
+```
+
+- [ ] **Step 2: Update `src/web/server.ts`**
+
+Construct the store next to the others and pass it in:
+
+```typescript
+import { createPermissionStore } from "../data/permissions.js";
+// ...
+const permissions = createPermissionStore(options.database.db);
+// ...
+const requireAuth = createRequireAuth(sessions, permissions);
+```
+
+Keep `permissions` in scope — it's passed to routers in Tasks 5–7.
+
+- [ ] **Step 3: Update session inline auth + `/me` in `src/web/api/session.ts`**
+
+`createSessionRouter` must accept `permissions` and (a) attach capabilities in `requireAuthInline`, (b) include them in `/me`. Pass `permissions` from `server.ts` into `createSessionRouter(users, sessions, audit, logger, permissions)`. In the `/me` handler, return:
+
+```typescript
+const ctx = resolvePermissionContext(validation.role, validation.userId, permissions);
+res.json({
+  id: validation.userId, username: validation.username, role: validation.role,
+  capabilities: [...ctx.capabilities],
+  bots: ctx.bots === "all" ? "all" : [...ctx.bots],
+});
+```
+
+(Match the existing `/me` shape; just add `capabilities` + `bots`. Read the file to find the exact response object.)
+
+- [ ] **Step 4: Verify build + existing tests**
+
+Run: `npx tsc --noEmit`
+Expected: exit 0 (the widened `req.user` is now populated everywhere it's read).
+
+Run: `npx vitest run src/web`
+Expected: PASS (existing auth/session/csrf tests still green; if a test constructs `createRequireAuth(sessions)` it must be updated to pass a `createPermissionStore(db)`).
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/web/middleware/requireAuth.ts src/web/server.ts src/web/api/session.ts
+git commit -m "feat(perm): load capabilities + bot access onto req.user; expose via /me"
+```
+
+---
+
+## Task 5: Enforce capabilities on the action routes
+
+**Files:**
+- Modify: `src/web/api/player.ts`, `src/web/api/bot.ts`, `src/web/api/auth.ts`, `src/web/api/music.ts`
+- Modify: `src/web/api/player.test.ts` (or create `src/web/api/permissions-enforcement.test.ts`)
+
+- [ ] **Step 1: Write a failing integration test** at `src/web/api/permissions-enforcement.test.ts` that builds the real app (or the relevant router) with a stubbed `req.user` and asserts:
+  - member without `player.control` → `POST /api/player/:botId/pause` → 403
+  - member with `player.control` + bot in allow-list → 200 (bot resolves)
+  - member with `player.control` but bot NOT in allow-list → 403
+  - member without `player.queue` → `POST /api/player/:botId/clear` → 403
+  - member without `bot.manage` → `POST /api/bot` → 403
+  - member without `platform.auth` → `POST /api/auth/cookie` → 403
+  - member without `quality` → `POST /api/music/quality` → 403
+  - admin → all 200/allowed
+
+  Use the same `appWith(user)` injection pattern as Task 2 (insert a middleware that sets `req.user` before the router) and a fake `BotManager`/providers so routes resolve. Model it on the existing `src/web/api/*.test.ts` setup (read one first for the harness).
+
+- [ ] **Step 2: Run to verify fail** — `npx vitest run src/web/api/permissions-enforcement.test.ts` → FAIL (routes currently allow everyone).
+
+- [ ] **Step 3: Apply gates.**
+
+`src/web/api/player.ts` — the shared `/:botId` middleware already resolves the bot. Add bot-access there, and add per-action capability guards. Define the queue-capability routes vs control routes:
+
+```typescript
+import { requirePermission, requireBotAccess } from "../middleware/requirePermission.js";
+
+// after the existing router.use("/:botId", resolveBot):
+router.use("/:botId", requireBotAccess("botId"));
+
+const control = requirePermission("player.control");
+const queue = requirePermission("player.queue");
+// control: play, pause, resume, next, prev, stop, seek, volume, mode, play-song, play-at, play-by-id, play-playlist, play-album, play-next-song
+// queue:   add, add-song, add-by-id, clear, playlist, /queue/:index (DELETE)
+// Apply per route, e.g.:
+router.post("/:botId/pause", control, async (req, res) => { /* existing */ });
+router.post("/:botId/add", queue, async (req, res) => { /* existing */ });
+router.delete("/:botId/queue/:index", queue, async (req, res) => { /* existing */ });
+```
+
+(Insert the `control`/`queue` middleware as the 2nd arg of each existing `router.post/delete`. Do not change handler bodies. `PUT /:botId/profile` → `requirePermission("bot.manage")`.)
+
+`src/web/api/bot.ts` — gate management + per-bot:
+
+```typescript
+const manage = requirePermission("bot.manage");
+router.post("/", manage, ...);                 // create (no botId)
+router.put("/:id", manage, requireBotAccess("id"), ...);
+router.delete("/:id", manage, requireBotAccess("id"), ...);
+router.post("/:id/start", manage, requireBotAccess("id"), ...);
+router.post("/:id/stop", manage, requireBotAccess("id"), ...);
+router.put("/:id/avatar", manage, requireBotAccess("id"), ...);
+router.delete("/:id/avatar", manage, requireBotAccess("id"), ...);
+router.post("/settings", manage, ...);         // global idle timeout
+```
+
+`src/web/api/auth.ts` — gate every mutating route with `requirePermission("platform.auth")`:
+`POST /qrcode`, `POST /sms/send`, `POST /sms/verify`, `POST /cookie`. (Leave `GET /status`, `GET /qrcode/status` open — read-only.)
+
+`src/web/api/music.ts` — gate the one mutating route:
+`router.post("/quality", requirePermission("quality"), ...)`.
+
+- [ ] **Step 4: Run to verify pass** — `npx vitest run src/web/api/permissions-enforcement.test.ts` → PASS. Then `npx vitest run src/web` → all green.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/web/api/player.ts src/web/api/bot.ts src/web/api/auth.ts src/web/api/music.ts src/web/api/permissions-enforcement.test.ts
+git commit -m "feat(perm): enforce capabilities + bot access on action routes"
+```
+
+---
+
+## Task 6: Filter the bot list for members
+
+**Files:**
+- Modify: `src/web/api/bot.ts` (`GET /`)
+- Modify: `src/bot/manager.ts` (`removeBot` → `permissions.pruneBot`)
+- Modify: test from Task 5
+
+- [ ] **Step 1: Add failing test** — member with `bots: ["b1"]` calling `GET /api/bot` sees only `b1`; admin sees all.
+
+- [ ] **Step 2: Run → fail.**
+
+- [ ] **Step 3: Implement.** In `GET /` of `bot.ts`:
+
+```typescript
+const all = getAllBots().map((b) => b.getStatus());
+const u = req.user!;
+const bots = u.role === "admin" || u.bots === "all"
+  ? all
+  : all.filter((b) => (u.bots as Set<string>).has(b.id));
+res.json({ bots });
+```
+
+In `src/bot/manager.ts`, give `BotManager` access to the `PermissionStore` (constructor param) and call `this.permissions.pruneBot(id)` inside `removeBot(id)` after deletion, so deleted bots drop out of allow-lists. Thread `permissions` from `index.ts`/`server.ts` into `BotManager`.
+
+- [ ] **Step 4: Run → pass; `npx vitest run src/web src/bot` green.**
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/web/api/bot.ts src/bot/manager.ts src/web/api/permissions-enforcement.test.ts
+git commit -m "feat(perm): filter GET /api/bot to allowed bots; prune access on bot delete"
+```
+
+---
+
+## Task 7: Management API (GET/PUT permissions) + audit
+
+**Files:**
+- Modify: `src/data/audit.ts` (add action)
+- Modify: `src/web/api/users.ts` (+ permissions endpoints; new-member default)
+- Modify: `src/web/server.ts` (pass `permissions` into `createUsersRouter`)
+- Create/extend: `src/web/api/users.test.ts`
+
+- [ ] **Step 1: Add `"user.permissions_changed"`** to the `AuditAction` union in `src/data/audit.ts`.
+
+- [ ] **Step 2: Write failing tests** for the users router (admin-only):
+  - `GET /api/users/:id/permissions` → `{ capabilities: [], bots: [] }` for a fresh member.
+  - `PUT /api/users/:id/permissions` with `{capabilities:["player.control"], bots:"all"}` → 200; subsequent GET reflects it; an audit row `user.permissions_changed` exists.
+  - `PUT` with an unknown capability token → it is dropped (not stored).
+  - New member created via `POST /api/users` → GET permissions returns basic tier (`["player.control","player.queue"]`, bots `"all"`).
+
+- [ ] **Step 3: Run → fail.**
+
+- [ ] **Step 4: Implement** in `src/web/api/users.ts` (router already admin-gated at mount). Accept `permissions: PermissionStore` param. Add:
+
+```typescript
+import { CAPABILITIES, isCapability, BASIC_TIER_CAPABILITIES } from "../../data/permissions.js";
+
+router.get("/:id/permissions", (req, res) => {
+  const user = users.findById(req.params.id);
+  if (!user) { res.status(404).json({ error: "not_found" }); return; }
+  res.json({ capabilities: permissions.getCapabilities(user.id), bots: permissions.getBotAccess(user.id) });
+});
+
+router.put("/:id/permissions", (req, res) => {
+  const user = users.findById(req.params.id);
+  if (!user) { res.status(404).json({ error: "not_found" }); return; }
+  const body = req.body ?? {};
+  const caps = Array.isArray(body.capabilities) ? body.capabilities.filter(isCapability) : [];
+  const bots = body.bots === "all" ? "all" : (Array.isArray(body.bots) ? body.bots.map(String) : []);
+  permissions.setPermissions(user.id, { capabilities: caps, bots });
+  audit.record({
+    actorId: req.user!.id, actorUsername: req.user!.username,
+    targetUserId: user.id, targetUsername: user.username,
+    action: "user.permissions_changed",
+  });
+  res.json({ success: true });
+});
+```
+
+In the existing `POST /api/users` handler, after creating a member, seed the basic tier:
+
+```typescript
+if (created.role === "member") {
+  permissions.setPermissions(created.id, { capabilities: BASIC_TIER_CAPABILITIES, bots: "all" });
+}
+```
+
+- [ ] **Step 5: Run → pass; `npx vitest run src/web` green.**
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/data/audit.ts src/web/api/users.ts src/web/server.ts src/web/api/users.test.ts
+git commit -m "feat(perm): admin permissions API + audit + new-member basic tier"
+```
+
+---
+
+## Task 8: One-time migration backfill (existing members → full)
+
+**Files:**
+- Modify: `src/data/database.ts` (`migrateSchema` or a dedicated backfill)
+- Create: `src/data/permissions-migration.test.ts`
+
+- [ ] **Step 1: Write failing test** — given a fresh db with an existing `member` user and NO permission rows, after `createDatabase()` runs the backfill, that member has all 5 capabilities + `bots.all`; an `admin` user gets nothing (bypasses). Backfill is idempotent (running twice does not duplicate / does not re-grant a member who was later restricted to empty).
+
+  Idempotency approach: store a one-shot marker. Use a `meta` row or check: only backfill members who currently have ZERO permission rows AND only on first introduction. Simplest robust marker: a row in a tiny `schema_meta(key TEXT PK, value TEXT)` table, key `perm_backfill_done`. If present, skip.
+
+- [ ] **Step 2: Run → fail.**
+
+- [ ] **Step 3: Implement** a `backfillMemberPermissions(db)` run once inside `createDatabase` after `initTables`:
+
+```typescript
+db.exec(`CREATE TABLE IF NOT EXISTS schema_meta (key TEXT PRIMARY KEY, value TEXT)`);
+const done = db.prepare("SELECT value FROM schema_meta WHERE key = 'perm_backfill_done'").get();
+if (!done) {
+  const members = db.prepare("SELECT id FROM users WHERE role = 'member'").all() as { id: string }[];
+  const insCap = db.prepare("INSERT OR IGNORE INTO user_permissions (userId, permission) VALUES (?, ?)");
+  const tx = db.transaction(() => {
+    for (const m of members) {
+      for (const c of ["player.control","player.queue","bot.manage","platform.auth","quality","bots.all"]) {
+        insCap.run(m.id, c);
+      }
+    }
+    db.prepare("INSERT INTO schema_meta (key, value) VALUES ('perm_backfill_done', ?)").run(String(Date.now()));
+  });
+  tx();
+}
+```
+
+- [ ] **Step 4: Run → pass.**
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/data/database.ts src/data/permissions-migration.test.ts
+git commit -m "feat(perm): one-time backfill of existing members to full access"
+```
+
+---
+
+## Task 9: Frontend — session capabilities + helpers
+
+**Files:**
+- Modify: `web/src/composables/useSession.ts`
+
+- [ ] **Step 1:** Extend the `User` type with `capabilities: string[]` and `bots: 'all' | string[]`; populate from `/api/session/me`, `/login`, `/setup` responses (the backend now returns them).
+- [ ] **Step 2:** Add computed helpers:
+
+```typescript
+function can(cap: string): boolean {
+  const u = currentUser.value;
+  return !!u && (u.role === 'admin' || (u.capabilities ?? []).includes(cap));
+}
+function canControlBot(botId: string): boolean {
+  const u = currentUser.value;
+  if (!u) return false;
+  if (u.role === 'admin' || u.bots === 'all') return true;
+  return Array.isArray(u.bots) && u.bots.includes(botId);
+}
+```
+
+Export `can` and `canControlBot` from the composable.
+
+- [ ] **Step 3:** Manual check: log in as admin → `can('quality')` true; (after backend done) a restricted member → false. Build: `cd web && npx vue-tsc --noEmit`.
+- [ ] **Step 4: Commit** `git add web/src/composables/useSession.ts && git commit -m "feat(perm): frontend session capabilities + can()/canControlBot()"`
+
+---
+
+## Task 10: Frontend — gate UI by capability + filter bots
+
+**Files:**
+- Modify: `web/src/components/Navbar.vue`, `web/src/components/Player.vue`, `web/src/views/Settings.vue`, `web/src/stores/player.ts`
+
+- [ ] **Step 1:** Navbar bot selector: render only controllable bots — `v-for="bot in store.bots"` becomes a filtered computed `controllableBots = store.bots.filter(b => session.canControlBot(b.id))`. (The backend already filters `GET /api/bot`, so this is belt-and-suspenders + correctness if both lists diverge.) Ensure `store.activeBot` fallback never lands on a bot the user can't control.
+- [ ] **Step 2:** Player.vue: wrap control buttons with `v-if="session.can('player.control')"` and queue actions with `v-if="session.can('player.queue')"`.
+- [ ] **Step 3:** Settings.vue: wrap the platform login cards with `v-if="session.can('platform.auth')"`, the audio-quality control with `v-if="session.can('quality')"`, and bot create/edit/delete with `v-if="session.can('bot.manage')"`.
+- [ ] **Step 4:** Manual verification (see Verification section). Build: `cd web && npx vue-tsc --noEmit`.
+- [ ] **Step 5: Commit** `git add web/src/components/Navbar.vue web/src/components/Player.vue web/src/views/Settings.vue web/src/stores/player.ts && git commit -m "feat(perm): hide UI a member lacks capability for"`
+
+---
+
+## Task 11: Frontend — admin permission editor
+
+**Files:**
+- Modify: `web/src/views/Settings.vue` (User Management section)
+
+- [ ] **Step 1:** In each member row of the admin User-Management list, add a "权限" button opening an editor (inline panel or dialog) with: 5 capability checkboxes (labels: 播放控制 / 队列管理 / 机器人管理 / 平台登录凭据 / 音质设置), and a bot allow-list — an "全部机器人" toggle plus, when off, a checkbox per bot from `store.bots`.
+- [ ] **Step 2:** On open, `GET /api/users/:id/permissions`; on save, `PUT /api/users/:id/permissions` with `{capabilities, bots}` then re-fetch. Admin rows show "全部权限(管理员)" and no editor.
+- [ ] **Step 3:** Manual verification. Build: `cd web && npx vue-tsc --noEmit`.
+- [ ] **Step 4: Commit** `git add web/src/views/Settings.vue && git commit -m "feat(perm): admin permission editor in user management"`
+
+---
+
+## Final verification
+
+- [ ] `npx tsc --noEmit` → exit 0
+- [ ] `npx vitest run src/` → all green (clean-checkout-equivalent; ignore stale `dist/` twins — see note)
+- [ ] `cd web && npx vue-tsc --noEmit` → exit 0
+- [ ] `npm run build` → succeeds
+- [ ] Manual (run the bot, log in): admin sees everything; create a member, restrict to `player.control` on one bot → member sees only that bot, can play/pause but cannot add to queue, cannot open platform login / quality / bot management; backend returns 403 on a forged request to a disallowed action (verify with curl + the member's session cookie).
+
+> **Note (pre-existing):** `tsconfig.json` compiles `*.test.ts` into `dist/`, and vitest also runs the `dist/` twins after a build — so `npx vitest run` (no path) double-runs and can fail on stale artifacts. Scope verification to `npx vitest run src/`. (A separate cleanup PR could add `exclude: ['**/dist/**']` to a vitest config.)
+
+## Out of scope (separate PRs, per spec)
+
+#1 guest mode · #2 dedicated-link bot hiding UX · #3 auto-pause on empty channel · #4 dedicated-link refresh bug.

docs/superpowers/plans/2026-05-30-autopause-empty-channel.md

@@ -0,0 +1,196 @@
+# Auto-pause on Empty Channel — Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: superpowers:subagent-driven-development. Steps use checkbox (`- [ ]`) syntax.
+
+**Goal:** Auto-pause playback when the bot's channel empties (no disconnect) and auto-resume when someone returns — only resuming tracks we auto-paused — gated by the existing global `autoPauseOnEmpty` flag.
+
+**Architecture:** A pure decision function decides pause/resume from (player state, autoPaused, flag, userCount). `BotInstance` owns an `autoPaused` flag and a `checkChannelOccupancy()` that the existing 30s idle poll AND new TS enter/leave/move events both call. The toggle is wired into `/api/bot/settings` + the Settings UI.
+
+**Tech:** Node ESM + TS, Vitest, Express, Vue 3.
+
+**Spec:** `docs/superpowers/specs/2026-05-30-autopause-empty-channel-design.md`
+
+---
+
+## Task 1: Pure occupancy-decision function
+
+**Files:** Create `src/bot/auto-pause.ts`, `src/bot/auto-pause.test.ts`.
+
+- [ ] **Step 1 — failing test** `src/bot/auto-pause.test.ts`:
+
+```typescript
+import { describe, it, expect } from "vitest";
+import { decideOccupancyAction } from "./auto-pause.js";
+
+describe("decideOccupancyAction", () => {
+  // (playerState, autoPaused, enabled, userCount) => "pause" | "resume" | "none"
+  it("pauses when empty while playing and enabled", () => {
+    expect(decideOccupancyAction("playing", false, true, 0)).toBe("pause");
+  });
+  it("does not pause when the feature is disabled", () => {
+    expect(decideOccupancyAction("playing", false, false, 0)).toBe("none");
+  });
+  it("does not pause when idle (nothing playing)", () => {
+    expect(decideOccupancyAction("idle", false, true, 0)).toBe("none");
+  });
+  it("does not pause when already paused", () => {
+    expect(decideOccupancyAction("paused", false, true, 0)).toBe("none");
+  });
+  it("resumes when re-populated and we auto-paused", () => {
+    expect(decideOccupancyAction("paused", true, true, 2)).toBe("resume");
+  });
+  it("does NOT resume a user-paused track on re-population", () => {
+    expect(decideOccupancyAction("paused", false, true, 2)).toBe("none");
+  });
+  it("does nothing when re-populated and already playing", () => {
+    expect(decideOccupancyAction("playing", false, true, 2)).toBe("none");
+  });
+  it("resume is independent of the enabled flag (we already auto-paused)", () => {
+    expect(decideOccupancyAction("paused", true, false, 1)).toBe("resume");
+  });
+});
+```
+
+- [ ] **Step 2 — run, expect fail:** `npx vitest run src/bot/auto-pause.test.ts` → module missing.
+
+- [ ] **Step 3 — implement** `src/bot/auto-pause.ts`:
+
+```typescript
+export type PlayerStateName = "idle" | "playing" | "paused";
+export type OccupancyAction = "pause" | "resume" | "none";
+
+/**
+ * Decide what auto-pause should do given the channel occupancy.
+ * - empty (userCount <= 0): pause iff enabled and currently playing.
+ * - re-populated (userCount > 0): resume iff we previously auto-paused and are still paused.
+ * `autoPaused` distinguishes our auto-pause from a user pause, so user pauses are never resumed.
+ */
+export function decideOccupancyAction(
+  playerState: PlayerStateName,
+  autoPaused: boolean,
+  enabled: boolean,
+  userCount: number,
+): OccupancyAction {
+  const empty = userCount <= 0;
+  if (empty) {
+    if (enabled && playerState === "playing") return "pause";
+    return "none";
+  }
+  if (autoPaused && playerState === "paused") return "resume";
+  return "none";
+}
+```
+
+- [ ] **Step 4 — run, expect pass:** `npx vitest run src/bot/auto-pause.test.ts` → 8 pass.
+- [ ] **Step 5 — commit:** `git add src/bot/auto-pause.ts src/bot/auto-pause.test.ts && git commit -m "feat(autopause): pure occupancy-decision function"`
+
+---
+
+## Task 2: Wire decision into BotInstance (autoPaused flag + checkChannelOccupancy)
+
+**Files:** Modify `src/bot/instance.ts`.
+
+Context: `_startIdlePoller` (~lines 190-206) polls every 30s, computes `userCount = (await getClientsInChannel()).length - 1`, and calls `_scheduleIdleCheck()` (empty) / `_cancelIdleTimer()` (occupied). `cmdPause`/`cmdResume` (~484-494), `cmdStop` (~496-505), and the playback start (`cmdPlay`/resolveAndPlay) wrap `player`. There's an unused `channelUserCount` field (~line 68). The instance has `this.config` (BotConfig) and `this.player`.
+
+- [ ] **Step 1 — add state + helper.** Add a private field `private autoPaused = false;`. Create a method that centralizes occupancy handling and is called with a freshly-computed userCount:
+
+```typescript
+import { decideOccupancyAction } from "./auto-pause.js";
+
+private handleOccupancy(userCount: number): void {
+  // idle-disconnect (unchanged behavior)
+  if (userCount <= 0) this._scheduleIdleCheck();
+  else this._cancelIdleTimer();
+
+  // auto-pause
+  const action = decideOccupancyAction(
+    this.player.getState() as "idle" | "playing" | "paused",
+    this.autoPaused,
+    this.config.autoPauseOnEmpty,
+    userCount,
+  );
+  if (action === "pause") {
+    this.player.pause();
+    this.autoPaused = true;
+    this.emit("stateChange");
+  } else if (action === "resume") {
+    this.player.resume();
+    this.autoPaused = false;
+    this.emit("stateChange");
+  }
+}
+```
+
+- [ ] **Step 2 — route the idle poller through it.** In `_startIdlePoller`, replace the inline `userCount`→schedule/cancel logic with: compute `userCount` then `this.handleOccupancy(userCount)`. (Keep the 30s interval + the same getClientsInChannel call + error handling.) Remove the now-redundant inline schedule/cancel branch (it lives in `handleOccupancy`).
+
+- [ ] **Step 3 — clear autoPaused on user actions + lifecycle.** In `cmdPause`, `cmdResume`, `cmdStop`, and the play-start path (`cmdPlay`/wherever playback (re)starts), set `this.autoPaused = false`. In the `disconnected` handler and on (re)connect, set `this.autoPaused = false`. (These ensure a user pause is never auto-resumed and the flag resets across connections.)
+
+- [ ] **Step 4 — `updateAutoPause`.** Add (mirrors `updateIdleTimeout`):
+
+```typescript
+updateAutoPause(enabled: boolean): void {
+  this.config.autoPauseOnEmpty = enabled;
+  // if turning off, leave current playback as-is; if a track was auto-paused, optionally resume:
+  if (!enabled && this.autoPaused && this.player.getState() === "paused") {
+    this.player.resume();
+    this.autoPaused = false;
+    this.emit("stateChange");
+  }
+}
+```
+
+- [ ] **Step 5 — verify:** `npx tsc --noEmit` → exit 0. `npx vitest run src/bot src/audio` → pass (existing tests unaffected).
+- [ ] **Step 6 — commit:** `git add src/bot/instance.ts && git commit -m "feat(autopause): drive pause/resume from channel occupancy in BotInstance"`
+
+---
+
+## Task 3: Re-emit TS member events for instant reaction
+
+**Files:** Modify `src/ts-protocol/client.ts`, `src/bot/instance.ts`.
+
+Context: `client.ts` forwards `textMessage`/`disconnected`/`connected` and only debug-logs `clientEnter` (~lines 219-224); `clientLeave`/`clientMoved` are not handled. `BotInstance.setupTsEvents()` (~lines 132-156) wires tsClient events.
+
+- [ ] **Step 1 — re-emit in client.ts.** Where `clientEnter` is logged, also `this.emit("clientEnter", info)`. Add subscriptions for `clientLeave` and `clientMoved` that `this.emit(...)` them upward (match the existing forwarding style; just propagate, no payload transformation needed since the instance re-queries).
+
+- [ ] **Step 2 — react in instance.ts.** In `setupTsEvents()`, add handlers: on `clientEnter` / `clientLeave` / `clientMoved`, call a small `async refreshOccupancy()` that does `const clients = await this.getClientsInChannel(); this.handleOccupancy(clients.length - 1);` (guarded with try/catch + only when connected). This gives near-instant pause/resume; the 30s poll remains the fallback.
+
+- [ ] **Step 3 — verify:** `npx tsc --noEmit` → 0. `npx vitest run src/bot` → pass.
+- [ ] **Step 4 — commit:** `git add src/ts-protocol/client.ts src/bot/instance.ts && git commit -m "feat(autopause): re-emit client enter/leave/move for instant pause/resume"`
+
+---
+
+## Task 4: API wiring for the toggle
+
+**Files:** Modify `src/web/api/bot.ts`; add/extend a test.
+
+Context: `GET /api/bot/settings` returns `{ idleTimeoutMinutes }`; `POST /api/bot/settings` validates `idleTimeoutMinutes`, sets `config.idleTimeoutMinutes`, `saveConfig`, then loops `botManager.getAllBots()` → `bot.updateIdleTimeout(...)`. This route is `requirePermission("bot.manage")`-gated.
+
+- [ ] **Step 1 — failing API test** (extend the existing bot settings test or add one): `GET /api/bot/settings` returns `autoPauseOnEmpty` (boolean); `POST /api/bot/settings` with `{ autoPauseOnEmpty: false }` persists it (a follow-up GET reflects false) and calls `updateAutoPause` on bots. Model the harness on the existing settings test.
+
+- [ ] **Step 2 — run, expect fail.**
+
+- [ ] **Step 3 — implement.** In `GET /settings`, add `autoPauseOnEmpty: options.config.autoPauseOnEmpty` to the response. In `POST /settings`, if `typeof req.body.autoPauseOnEmpty === "boolean"`, set `config.autoPauseOnEmpty`, include it in the `saveConfig`, and loop bots calling `bot.updateAutoPause(config.autoPauseOnEmpty)`. Keep the existing `idleTimeoutMinutes` handling intact (handle both fields in one save).
+
+- [ ] **Step 4 — verify:** `npx vitest run src/web` → pass; `npx tsc --noEmit` → 0.
+- [ ] **Step 5 — commit:** `git add src/web/api/bot.ts <test> && git commit -m "feat(autopause): expose autoPauseOnEmpty via /api/bot/settings"`
+
+---
+
+## Task 5: Frontend toggle in Settings
+
+**Files:** Modify `web/src/views/Settings.vue` (and the settings load/save it uses).
+
+Context: The **行为设置** section (already `v-if="can('bot.manage')"`) holds the idle-timeout control, loaded via `loadIdleTimeout()` (GET /api/bot/settings) and saved via `saveIdleTimeout()` (POST). Read these first.
+
+- [ ] **Step 1 — implement.** Add an `autoPauseOnEmpty` ref. In the settings load, populate it from the GET response. Add a checkbox/toggle in the 行为设置 section labelled e.g. "频道无人时自动暂停" bound to it, and include `autoPauseOnEmpty` in the POST payload of the save function (alongside `idleTimeoutMinutes`, or via its own save — match the existing pattern). Use existing form/toggle CSS classes.
+- [ ] **Step 2 — verify:** `cd web && npx vue-tsc --noEmit` → exit 0; read template back for correctness.
+- [ ] **Step 3 — commit:** `git add web/src/views/Settings.vue && git commit -m "feat(autopause): autoPauseOnEmpty toggle in Settings"`
+
+---
+
+## Final verification
+- [ ] `npx tsc --noEmit` → 0
+- [ ] `npx vitest run src/` → all pass
+- [ ] `cd web && npx vue-tsc --noEmit` → 0
+- [ ] `npm run build` → succeeds
+- [ ] Manual: with a bot playing, leave its channel → music auto-pauses (no disconnect); rejoin → resumes. Manually pause, leave, rejoin → stays paused. Toggle off in Settings → no auto-pause.

docs/superpowers/plans/2026-05-30-dedicated-link-scope.md

@@ -0,0 +1,156 @@
+# Dedicated-link Bot Scoping (+ refresh fix) — Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: superpowers:subagent-driven-development. Steps use checkbox (`- [ ]`) syntax.
+
+**Goal:** Opening a dedicated link locks the WebUI to that one bot (selector shows only it, switching disabled, with an explicit exit); the lock is carried in the URL (`?bot=<id>`) so it survives refresh — fixing item 4 too.
+
+**Architecture:** A `scopedBotId` in the Pinia player store is the runtime lock; the URL query `?bot=<id>` is the durable source of truth. A router `beforeEach` syncs scope from the query and re-attaches `?bot` across in-app navigation while scoped. `BotRedirect` seeds it; Navbar renders the lock; graceful clear if the bot doesn't exist.
+
+**Tech:** Vue 3 + Pinia + vue-router, TypeScript. (Frontend isn't unit-tested in this repo → verify via `vue-tsc` + manual; extract one pure helper to unit-test.)
+
+**Spec:** `docs/superpowers/specs/2026-05-30-dedicated-link-scope-design.md`
+
+---
+
+## Task 1: Store scope state + pure resolve helper (with test)
+
+**Files:** Modify `web/src/stores/player.ts`; create `web/src/stores/scope.ts` + `web/src/stores/scope.test.ts`.
+
+READ `web/src/stores/player.ts` first: `activeBotId` state (~line 52), `setActiveBotId` action (~127-133), `fetchBots` (~196-198 default to bots[0]), `activeBot` getter (~73-75), and the localStorage pattern used by `theme` (~175-183) for reference (we are NOT using localStorage, but match code style).
+
+- [ ] **Step 1 — pure helper + failing test.** Create `web/src/stores/scope.ts`:
+
+```typescript
+/** Given the desired scoped id (from ?bot) and the known bot ids, decide the
+ * effective scope. Returns the id if it exists, else null (graceful clear:
+ * a stale/forbidden id never locks the UI). */
+export function resolveScopedBot(
+  requestedId: string | null | undefined,
+  knownBotIds: readonly string[],
+): string | null {
+  if (!requestedId) return null;
+  return knownBotIds.includes(requestedId) ? requestedId : null;
+}
+```
+
+`web/src/stores/scope.test.ts`:
+
+```typescript
+import { describe, it, expect } from "vitest";
+import { resolveScopedBot } from "./scope.js";
+
+describe("resolveScopedBot", () => {
+  it("returns null when no id requested", () => {
+    expect(resolveScopedBot(null, ["a", "b"])).toBeNull();
+    expect(resolveScopedBot(undefined, ["a"])).toBeNull();
+    expect(resolveScopedBot("", ["a"])).toBeNull();
+  });
+  it("returns the id when it exists in the bot list", () => {
+    expect(resolveScopedBot("b", ["a", "b"])).toBe("b");
+  });
+  it("clears (null) when the requested id is not a known bot", () => {
+    expect(resolveScopedBot("ghost", ["a", "b"])).toBeNull();
+  });
+});
+```
+
+- [ ] **Step 2 — run, expect fail:** `npx vitest run web/src/stores/scope.test.ts` → module missing.
+      (Note: the repo's vitest runs from root; this test lives under web/. If the root vitest config doesn't include web/src, run it via the web workspace: `cd web && npx vitest run src/stores/scope.test.ts`. Use whichever picks it up; confirm it FAILS first.)
+
+- [ ] **Step 3 — implement the helper** (code above).
+
+- [ ] **Step 4 — add scope state to `web/src/stores/player.ts`:**
+  - state: `scopedBotId: null as string | null`.
+  - getter: `isScoped: (state) => state.scopedBotId !== null`.
+  - actions:
+    - `setScope(id: string)` → `this.scopedBotId = id;` and also set `this.activeBotId = id` (scoped == active), then ensure that bot's queue is loaded like `setActiveBotId` does.
+    - `clearScope()` → `this.scopedBotId = null;`.
+    - `applyScopeFromQuery(requestedId: string | null)` → uses `resolveScopedBot(requestedId, this.bots.map(b => b.id))`; if result non-null → `setScope(result)`; if null and a scope was requested → `clearScope()`. (Called after bots are loaded.)
+  - Guard `setActiveBotId(id)`: at the top, `if (this.scopedBotId !== null && id !== this.scopedBotId) return;` so switching is blocked while scoped.
+
+- [ ] **Step 5 — run helper test, expect pass:** `cd web && npx vitest run src/stores/scope.test.ts` → 3 pass. `cd web && npx vue-tsc --noEmit` → exit 0.
+
+- [ ] **Step 6 — commit:** `git add web/src/stores/scope.ts web/src/stores/scope.test.ts web/src/stores/player.ts && git commit -m "feat(scope): player store scopedBotId + resolveScopedBot helper"`
+
+---
+
+## Task 2: Router guard — sync scope from `?bot` + preserve across navigation
+
+**Files:** Modify `web/src/router/index.ts`.
+
+READ the file: the existing `beforeEach` (~lines 36-60) handles needsSetup/auth. Add scope handling AFTER auth resolves (so we don't fight the login redirect). Import the player store (use it inside the guard via `usePlayerStore()` — Pinia is active by the time navigation runs).
+
+- [ ] **Step 1 — implement.** In `beforeEach`, after the existing auth/needsSetup logic decides the navigation is allowed to proceed to `to` (i.e., not redirecting to /login or /first-run), add:
+
+```typescript
+const store = usePlayerStore();
+const qBot = typeof to.query.bot === "string" ? to.query.bot : null;
+if (qBot) {
+  // entering/with a scope in the URL — store will validate against bots later
+  store.scopedBotId = qBot;        // tentative; applyScopeFromQuery (after fetchBots) confirms/clears
+  return next();
+}
+if (store.scopedBotId) {
+  // scoped but this navigation dropped ?bot → re-attach so the lock survives in-app nav + refresh
+  if (to.query.bot !== store.scopedBotId) {
+    return next({ ...to, query: { ...to.query, bot: store.scopedBotId } });
+  }
+}
+return next();
+```
+
+(Adapt to the file's existing `next()` style — it may use `next(...)`/return. Ensure this runs only for allowed navigations, not when redirecting to /login. The exit action in Task 4 calls `store.clearScope()` BEFORE navigating to `/`, so `store.scopedBotId` is null and the re-attach branch is skipped — that's how exit works.)
+
+- [ ] **Step 2 — verify:** `cd web && npx vue-tsc --noEmit` → exit 0. Re-read the guard to ensure no redirect loop (when `to.query.bot === store.scopedBotId`, it does NOT redirect again).
+
+- [ ] **Step 3 — commit:** `git add web/src/router/index.ts && git commit -m "feat(scope): router guard syncs + preserves ?bot across navigation"`
+
+---
+
+## Task 3: BotRedirect seeds the URL scope
+
+**Files:** Modify `web/src/views/BotRedirect.vue`.
+
+READ it: onMounted reads `route.params.id`, ensures `store.fetchBots()`, finds the bot; if found `store.setActiveBotId(id)` + `router.replace('/')`; else shows not-found.
+
+- [ ] **Step 1 — implement.** Change the found-branch to seed scope via the URL instead of bouncing to a bare `/`:
+  - keep the fetchBots + existence check,
+  - if found: `router.replace({ path: '/', query: { bot: botId } })` (the router guard + store will set the scope). Optionally also call `store.setScope(botId)` directly for immediacy.
+  - if not found: unchanged (show "机器人不存在或未加载").
+
+- [ ] **Step 2 — verify:** `cd web && npx vue-tsc --noEmit` → exit 0.
+- [ ] **Step 3 — commit:** `git add web/src/views/BotRedirect.vue && git commit -m "feat(scope): dedicated link seeds ?bot scope instead of bare redirect"`
+
+---
+
+## Task 4: Navbar lock UI + apply-scope-on-load
+
+**Files:** Modify `web/src/components/Navbar.vue`, `web/src/App.vue`.
+
+READ both: Navbar has `controllableBots` (computed) + the dropdown selector + `selectBot`; App.vue onMounted calls `playerStore.fetchBots()` (+ loadTheme/connect).
+
+- [ ] **Step 1 — Navbar lock.** When `store.isScoped`:
+  - render only the scoped bot (a `displayedBots` computed → if scoped, `controllableBots.filter(b => b.id === store.scopedBotId)`, else `controllableBots`),
+  - disable the dropdown open / switching (no chevron, or make the trigger non-interactive) so the user can't switch,
+  - hide other bots' "copy link" affordances (only the scoped bot remains anyway),
+  - show a small "专属模式" badge and an "退出" button → `store.clearScope(); router.push('/')` (clear BEFORE navigating so the guard doesn't re-attach `?bot`). Import `useRouter` if not present.
+  When not scoped: behavior unchanged.
+
+- [ ] **Step 2 — apply scope on load (App.vue).** After `fetchBots()` resolves in onMounted, call `playerStore.applyScopeFromQuery(routeBot)` where `routeBot` is the current `?bot` query (via `useRoute().query.bot` as string|null). This confirms a refreshed `?bot` against the loaded bots and sets activeBotId (or gracefully clears if the bot is gone). (If Task 2's guard already set `scopedBotId` tentatively, this validates it against the now-loaded bot list.)
+
+- [ ] **Step 3 — verify:** `cd web && npx vue-tsc --noEmit` → exit 0. Read templates back for valid syntax; confirm read-only displays aren't broken and the non-scoped path is unchanged.
+- [ ] **Step 4 — commit:** `git add web/src/components/Navbar.vue web/src/App.vue && git commit -m "feat(scope): lock Navbar selector to scoped bot + apply scope on load"`
+
+---
+
+## Final verification
+- [ ] `cd web && npx vue-tsc --noEmit` → exit 0
+- [ ] `npx tsc --noEmit` → exit 0 (backend unaffected)
+- [ ] `cd web && npx vitest run src/stores/scope.test.ts` (or root vitest if it includes web) → pass
+- [ ] `npm run build` → succeeds
+- [ ] Manual: open `/bot/<id>` → URL becomes `/?bot=<id>`, selector shows only that bot, switching disabled; **refresh → still locked** (item 4 fixed); navigate to Search → URL keeps `?bot`; refresh on Search → still locked; click 退出 → back to all bots (`/`, no `?bot`); open `/` directly → full multi-bot control; open `/?bot=<nonexistent>` → gracefully shows all bots (no lock).
+
+## Notes
+- Backend per-bot authorization (PR #80) is the real security boundary; this is a UX lock.
+- No localStorage — URL is the source of truth, so the lock is shareable and self-clearing.
+- Item 4 is fixed as a consequence of carrying `?bot` in the URL across refresh/navigation.

docs/superpowers/plans/2026-06-25-ts-command-permissions.md

@@ -0,0 +1,840 @@
+# TeamSpeak chat-command permission control — Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Gate a fixed set of "admin" TeamSpeak chat commands (`stop`, `clear`, `remove`, `move`, `vol`, `mode`) behind configured TS server-group IDs, opt-in and backward-compatible, configurable from the WebUI and `config.json`.
+
+**Architecture:** A pure helper `canRunCommand(name, invokerGroups, adminGroups)` decides allow/deny. The chat handler `handleTextMessage` (NOT the WebUI-shared `executeCommand`) consults it before executing, performs a best-effort group lookup when the sender's groups weren't delivered with the event, fails closed, and replies on deny. The privileged groups live in the already-declared `config.adminGroups`, surfaced through the existing `GET/POST /api/bot/settings` endpoints and an admin-only Settings.vue section.
+
+**Tech Stack:** Node 20, TypeScript (ESM), Express 5, Vitest + supertest (backend), Vue 3 + `vue-tsc` (frontend), `@honeybbq/teamspeak-client`.
+
+## Global Constraints
+
+- **ESM import specifiers:** every relative import ends in `.js` even in `.ts` files (e.g. `import { canRunCommand } from "./commands.js"`).
+- **Admin command set (exact, single source of truth):** `stop`, `clear`, `remove`, `move`, `vol`, `mode`. Everything else is public. (Note: `follow` is intentionally NOT admin — it becomes public.)
+- **Enforcement is opt-in / backward-compatible:** `config.adminGroups === []` (the default) ⇒ no enforcement; admin commands stay open to everyone exactly as today.
+- **Fail closed:** an admin command, with enforcement on, whose sender groups cannot be determined (even after fallback) is **denied**.
+- **Group-id normalization:** `invokerGroups` are strings, `adminGroups` are numbers — compare as the same type so `"6"` matches `6`.
+- **Denial reply text (exact):** `⛔ 需要管理员权限（该命令仅限管理员服务器组）`.
+- **`adminGroups` validation:** array of non-negative integers; filter out everything else; ignore a non-array value entirely.
+- **Live config:** `BotInstance` shares the same `config` object the router mutates; the gate reads `this.config.adminGroups` live (no restart, no propagation call).
+- **Per-task tests:** run `npx vitest run <file>` (targets `.ts` directly). Before any full `npm test`, run `rm -rf dist` first — a stale untracked `dist/` makes vitest double-run compiled `.test.js` copies (known environment quirk). The repo path contains spaces (`/c/Users/saopig1/Music/teamspeak music bot`) — quote it.
+- **Frontend type-check:** `cd web && npx vue-tsc --noEmit` (must be clean).
+- **TDD + frequent commits:** every task is red→green→commit. Keep project `tsc`/`vitest` green after each task.
+
+---
+
+### Task 1: `canRunCommand` helper + admin-set as single source of truth
+
+**Files:**
+- Modify: `src/bot/commands.ts` (lines 8-16 sets; line 59-61 `isAdminCommand`)
+- Test: `src/bot/commands.test.ts` (append a new `describe` block)
+
+**Interfaces:**
+- Consumes: nothing from other tasks.
+- Produces:
+  - `export const ADMIN_COMMANDS: Set<string>` = `{stop, clear, remove, move, vol, mode}`
+  - `export function isAdminCommand(commandName: string): boolean` (unchanged signature)
+  - `export function canRunCommand(commandName: string, invokerGroups: readonly (string | number)[], adminGroups: readonly number[]): boolean` — consumed by Task 3.
+
+- [ ] **Step 1: Write the failing tests**
+
+Append to `src/bot/commands.test.ts`:
+
+```ts
+import { canRunCommand, isAdminCommand } from "./commands.js";
+
+describe("isAdminCommand classification", () => {
+  it("treats stop/clear/remove/move/vol/mode as admin", () => {
+    for (const c of ["stop", "clear", "remove", "move", "vol", "mode"]) {
+      expect(isAdminCommand(c)).toBe(true);
+    }
+  });
+  it("treats follow and play as NOT admin", () => {
+    expect(isAdminCommand("follow")).toBe(false);
+    expect(isAdminCommand("play")).toBe(false);
+  });
+});
+
+describe("canRunCommand", () => {
+  it("allows any public command regardless of groups", () => {
+    expect(canRunCommand("play", [], [6])).toBe(true);
+    expect(canRunCommand("follow", [], [6])).toBe(true);
+  });
+  it("allows admin command when enforcement is off (empty adminGroups)", () => {
+    expect(canRunCommand("stop", [], [])).toBe(true);
+  });
+  it("allows admin command when an invoker group matches (string vs number)", () => {
+    expect(canRunCommand("stop", ["6"], [6])).toBe(true);
+    expect(canRunCommand("stop", [6], [6])).toBe(true);
+    expect(canRunCommand("vol", ["8", "6"], [6])).toBe(true);
+  });
+  it("denies admin command when no invoker group matches", () => {
+    expect(canRunCommand("stop", ["8"], [6])).toBe(false);
+  });
+  it("denies admin command when invoker has no groups and enforcement is on", () => {
+    expect(canRunCommand("clear", [], [6])).toBe(false);
+  });
+});
+```
+
+- [ ] **Step 2: Run the tests to verify they fail**
+
+Run: `npx vitest run "src/bot/commands.test.ts"`
+Expected: FAIL — `canRunCommand` is not exported / not a function.
+
+- [ ] **Step 3: Implement the helper and tighten the admin set**
+
+In `src/bot/commands.ts`, delete the dead `PUBLIC_COMMANDS` export (nothing imports it; the admin set is the sole source of truth), set `ADMIN_COMMANDS` to the exact spec set (drop `follow`), and add `canRunCommand`. The file becomes:
+
+```ts
+export interface ParsedCommand {
+  name: string;
+  args: string;
+  rawArgs: string[];
+  flags: Set<string>;
+}
+
+/**
+ * The fixed set of "admin" chat commands. This is the SINGLE source of truth
+ * for which commands the permission gate restricts; reclassifying a command is
+ * a one-line edit here. Everything not in this set is public.
+ */
+export const ADMIN_COMMANDS = new Set([
+  "stop", "clear", "remove", "move", "vol", "mode",
+]);
+
+export function parseCommand(
+  message: string,
+  prefix: string,
+  aliases: Record<string, string> = {},
+): ParsedCommand | null {
+  const trimmed = message.trim();
+  if (!trimmed.startsWith(prefix)) return null;
+
+  const withoutPrefix = trimmed.slice(prefix.length);
+  if (!withoutPrefix) return null;
+
+  const parts = withoutPrefix.split(/\s+/);
+  let name = parts[0].toLowerCase();
+
+  if (aliases[name]) {
+    name = aliases[name];
+  }
+
+  const flags = new Set<string>();
+  const argParts: string[] = [];
+
+  for (let i = 1; i < parts.length; i++) {
+    if (
+      parts[i].startsWith("-") &&
+      parts[i].length === 2 &&
+      /[a-zA-Z]/.test(parts[i][1])
+    ) {
+      flags.add(parts[i][1].toLowerCase());
+    } else {
+      argParts.push(parts[i]);
+    }
+  }
+
+  return {
+    name,
+    args: argParts.join(" "),
+    rawArgs: argParts,
+    flags,
+  };
+}
+
+export function isAdminCommand(commandName: string): boolean {
+  return ADMIN_COMMANDS.has(commandName);
+}
+
+/**
+ * Decide whether a chat command may run, given the invoker's TS server groups
+ * and the configured admin groups. Pure + synchronous so it is trivially unit
+ * tested and reused by the async gate in BotInstance.
+ *
+ * Allowed iff: (1) it is a public command, OR (2) enforcement is off
+ * (adminGroups empty), OR (3) some invoker group is in adminGroups.
+ * invokerGroups (strings from TS) and adminGroups (numbers) are normalized to
+ * strings before comparison so "6" matches 6.
+ */
+export function canRunCommand(
+  commandName: string,
+  invokerGroups: readonly (string | number)[],
+  adminGroups: readonly number[],
+): boolean {
+  if (!isAdminCommand(commandName)) return true;
+  if (adminGroups.length === 0) return true;
+  const admin = new Set(adminGroups.map((g) => String(g)));
+  return invokerGroups.some((g) => admin.has(String(g)));
+}
+```
+
+- [ ] **Step 4: Run the tests to verify they pass**
+
+Run: `npx vitest run "src/bot/commands.test.ts"`
+Expected: PASS (parser tests + the new classification/canRunCommand tests).
+
+- [ ] **Step 5: Verify nothing else imported the deleted symbol**
+
+Run: `grep -rn "PUBLIC_COMMANDS" src/`
+Expected: no matches (confirms the deletion is safe).
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add "src/bot/commands.ts" "src/bot/commands.test.ts"
+git commit -m "feat(commands): add canRunCommand gate helper + admin-set source of truth"
+```
+
+---
+
+### Task 2: Surface `invokerGroups` on `TS3TextMessage`
+
+**Files:**
+- Modify: `src/ts-protocol/client.ts` (interface lines 58-64; mapping lines 205-214)
+- Test: `src/ts-protocol/text-message.test.ts` (new)
+
+**Interfaces:**
+- Consumes: nothing from other tasks.
+- Produces:
+  - `TS3TextMessage` gains `invokerGroups: string[]`.
+  - `export function toTS3TextMessage(msg: TextMessage): TS3TextMessage` — a pure mapper, used by the `textMessage` event handler and unit-testable. Consumed (the field) by Task 3.
+
+- [ ] **Step 1: Write the failing test**
+
+Create `src/ts-protocol/text-message.test.ts`:
+
+```ts
+import { describe, it, expect } from "vitest";
+import { toTS3TextMessage } from "./client.js";
+import type { TextMessage } from "@honeybbq/teamspeak-client";
+
+function makeMsg(over: Partial<TextMessage> = {}): TextMessage {
+  return {
+    invokerName: "Alice",
+    invokerUID: "uid-abc",
+    message: "!stop",
+    invokerGroups: ["6", "8"],
+    targetMode: 2,
+    targetID: 0n,
+    invokerID: 5,
+    ...over,
+  };
+}
+
+describe("toTS3TextMessage", () => {
+  it("maps core fields and stringifies invokerID", () => {
+    const r = toTS3TextMessage(makeMsg());
+    expect(r.invokerName).toBe("Alice");
+    expect(r.invokerId).toBe("5");
+    expect(r.invokerUid).toBe("uid-abc");
+    expect(r.message).toBe("!stop");
+    expect(r.targetMode).toBe(2);
+  });
+
+  it("preserves the sender's server groups", () => {
+    expect(toTS3TextMessage(makeMsg({ invokerGroups: ["6"] })).invokerGroups).toEqual(["6"]);
+  });
+
+  it("defaults missing invokerGroups to an empty array", () => {
+    const partial = {
+      invokerName: "Bob",
+      invokerUID: "u",
+      message: "!stop",
+      targetMode: 1,
+      targetID: 0n,
+      invokerID: 7,
+    } as unknown as TextMessage;
+    expect(toTS3TextMessage(partial).invokerGroups).toEqual([]);
+  });
+});
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `npx vitest run "src/ts-protocol/text-message.test.ts"`
+Expected: FAIL — `toTS3TextMessage` is not exported.
+
+- [ ] **Step 3: Add the field and the pure mapper, and use it in the handler**
+
+In `src/ts-protocol/client.ts`, extend the interface (add `invokerGroups`):
+
+```ts
+export interface TS3TextMessage {
+  invokerName: string;
+  invokerId: string;
+  invokerUid: string;
+  message: string;
+  targetMode: number; // 1=private, 2=channel, 3=server
+  invokerGroups: string[]; // sender's TS server-group ids; [] when not in view cache
+}
+```
+
+Add the pure mapper just below the interface (still above the `TS3Client` class):
+
+```ts
+/**
+ * Map the library's TextMessage to our wrapper. Preserves invokerGroups (the
+ * sender's TS server groups), which the library populates only when the sender
+ * is in the bot's client-view cache; otherwise it is []. Used by the chat
+ * command permission gate.
+ */
+export function toTS3TextMessage(msg: TextMessage): TS3TextMessage {
+  return {
+    invokerName: msg.invokerName,
+    invokerId: String(msg.invokerID),
+    invokerUid: msg.invokerUID,
+    message: msg.message,
+    targetMode: msg.targetMode,
+    invokerGroups: msg.invokerGroups ?? [],
+  };
+}
+```
+
+Replace the inline mapping inside `this.client.on("textMessage", ...)` (currently lines 205-214) with a call to the mapper:
+
+```ts
+    this.client.on("textMessage", (msg: TextMessage) => {
+      this.emit("textMessage", toTS3TextMessage(msg));
+    });
+```
+
+(`TextMessage` is already imported at the top of the file.)
+
+- [ ] **Step 4: Run the test to verify it passes**
+
+Run: `npx vitest run "src/ts-protocol/text-message.test.ts"`
+Expected: PASS (3 tests).
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add "src/ts-protocol/client.ts" "src/ts-protocol/text-message.test.ts"
+git commit -m "feat(ts-protocol): surface invokerGroups on TS3TextMessage via pure mapper"
+```
+
+---
+
+### Task 3: Permission gate in `handleTextMessage` (fallback lookup + fail-closed + denial reply)
+
+**Files:**
+- Modify: `src/bot/instance.ts` (imports lines 10-14; add a module constant; `handleTextMessage` lines 317-349; add two private methods)
+- Test: `src/bot/instance.test.ts` (append a new `describe` block)
+
+**Interfaces:**
+- Consumes:
+  - `canRunCommand(commandName, invokerGroups, adminGroups)` from `./commands.js` (Task 1).
+  - `TS3TextMessage.invokerGroups: string[]` (Task 2).
+  - Existing `this.tsClient.getClientsInChannel(): Promise<ClientInfo[]>` where each `ClientInfo` has `id: number` and `serverGroups: string[]` (library already parses these).
+  - Existing `this.tsClient.sendTextMessage(message: string, targetMode?: number): Promise<void>`.
+- Produces:
+  - `export const COMMAND_DENIED_MESSAGE: string` (exported so the test can assert it).
+  - Private `isCommandAllowed(commandName, msg)` and `lookupInvokerGroups(invokerId)` (exercised via prototype in the test).
+
+- [ ] **Step 1: Write the failing tests**
+
+Append to `src/bot/instance.test.ts`:
+
+```ts
+import { vi } from "vitest";
+import { COMMAND_DENIED_MESSAGE } from "./instance.js";
+import type { TS3TextMessage } from "../ts-protocol/client.js";
+
+/** Minimal `this` carrying only what handleTextMessage's gate path touches.
+ *  The gate methods live on the prototype and are attached here so calls like
+ *  `this.isCommandAllowed(...)` resolve against this same object. */
+function makeGateCtx(opts: {
+  adminGroups?: number[];
+  clients?: Array<{ id: number; serverGroups: string[] }>;
+}) {
+  const ctx: any = {
+    config: { commandPrefix: "!", commandAliases: {}, adminGroups: opts.adminGroups ?? [] },
+    logger: { info: vi.fn(), error: vi.fn() },
+    tsClient: {
+      sendTextMessage: vi.fn(async () => {}),
+      getClientsInChannel: vi.fn(async () => opts.clients ?? []),
+    },
+    executeCommand: vi.fn(async () => null),
+    isCommandAllowed: (BotInstance.prototype as any).isCommandAllowed,
+    lookupInvokerGroups: (BotInstance.prototype as any).lookupInvokerGroups,
+  };
+  return ctx;
+}
+
+function makeMsg(message: string, invokerGroups: string[] = [], invokerId = "5"): TS3TextMessage {
+  return { invokerName: "Tester", invokerId, invokerUid: "uid", message, targetMode: 2, invokerGroups };
+}
+
+const handleTextMessage = (BotInstance.prototype as any).handleTextMessage as (
+  this: unknown,
+  msg: TS3TextMessage,
+) => Promise<void>;
+
+describe("BotInstance.handleTextMessage — command permission gate", () => {
+  it("runs a public command even with enforcement on", async () => {
+    const ctx = makeGateCtx({ adminGroups: [6] });
+    await handleTextMessage.call(ctx, makeMsg("!play 晴天"));
+    expect(ctx.executeCommand).toHaveBeenCalledTimes(1);
+    expect(ctx.tsClient.sendTextMessage).not.toHaveBeenCalledWith(COMMAND_DENIED_MESSAGE);
+  });
+
+  it("runs an admin command when enforcement is off (empty adminGroups)", async () => {
+    const ctx = makeGateCtx({ adminGroups: [] });
+    await handleTextMessage.call(ctx, makeMsg("!stop"));
+    expect(ctx.executeCommand).toHaveBeenCalledTimes(1);
+  });
+
+  it("runs an admin command when the event carried a matching group", async () => {
+    const ctx = makeGateCtx({ adminGroups: [6] });
+    await handleTextMessage.call(ctx, makeMsg("!stop", ["6"]));
+    expect(ctx.executeCommand).toHaveBeenCalledTimes(1);
+    expect(ctx.tsClient.getClientsInChannel).not.toHaveBeenCalled(); // no fallback needed
+  });
+
+  it("denies an admin command when known groups do not match (no fallback, with reply)", async () => {
+    const ctx = makeGateCtx({ adminGroups: [6] });
+    await handleTextMessage.call(ctx, makeMsg("!stop", ["8"]));
+    expect(ctx.executeCommand).not.toHaveBeenCalled();
+    expect(ctx.tsClient.getClientsInChannel).not.toHaveBeenCalled();
+    expect(ctx.tsClient.sendTextMessage).toHaveBeenCalledWith(COMMAND_DENIED_MESSAGE);
+  });
+
+  it("falls back to a group lookup when the event carried no groups, and allows on match", async () => {
+    const ctx = makeGateCtx({ adminGroups: [6], clients: [{ id: 5, serverGroups: ["6"] }] });
+    await handleTextMessage.call(ctx, makeMsg("!stop", [], "5"));
+    expect(ctx.tsClient.getClientsInChannel).toHaveBeenCalledTimes(1);
+    expect(ctx.executeCommand).toHaveBeenCalledTimes(1);
+  });
+
+  it("fails closed when the fallback finds the client but no matching group", async () => {
+    const ctx = makeGateCtx({ adminGroups: [6], clients: [{ id: 5, serverGroups: ["8"] }] });
+    await handleTextMessage.call(ctx, makeMsg("!stop", [], "5"));
+    expect(ctx.executeCommand).not.toHaveBeenCalled();
+    expect(ctx.tsClient.sendTextMessage).toHaveBeenCalledWith(COMMAND_DENIED_MESSAGE);
+  });
+
+  it("fails closed when the fallback cannot find the client at all", async () => {
+    const ctx = makeGateCtx({ adminGroups: [6], clients: [] });
+    await handleTextMessage.call(ctx, makeMsg("!stop", [], "5"));
+    expect(ctx.executeCommand).not.toHaveBeenCalled();
+    expect(ctx.tsClient.sendTextMessage).toHaveBeenCalledWith(COMMAND_DENIED_MESSAGE);
+  });
+});
+```
+
+- [ ] **Step 2: Run the tests to verify they fail**
+
+Run: `npx vitest run "src/bot/instance.test.ts"`
+Expected: FAIL — `COMMAND_DENIED_MESSAGE` is not exported; `isCommandAllowed`/`lookupInvokerGroups` are undefined.
+
+- [ ] **Step 3: Implement the gate**
+
+In `src/bot/instance.ts`, change the commands import (lines 10-14) from `isAdminCommand` to `canRunCommand`:
+
+```ts
+import {
+  parseCommand,
+  canRunCommand,
+  type ParsedCommand,
+} from "./commands.js";
+```
+
+Add a module-level constant just after the imports (above `export interface BotInstanceOptions`):
+
+```ts
+/** Reply sent when a non-admin invokes an admin-only chat command. */
+export const COMMAND_DENIED_MESSAGE = "⛔ 需要管理员权限（该命令仅限管理员服务器组）";
+```
+
+Replace `handleTextMessage` (lines 317-349) so the dead stub becomes the real gate:
+
+```ts
+  private async handleTextMessage(msg: TS3TextMessage): Promise<void> {
+    const parsed = parseCommand(
+      msg.message,
+      this.config.commandPrefix,
+      this.config.commandAliases
+    );
+    if (!parsed) return;
+
+    if (!(await this.isCommandAllowed(parsed.name, msg))) {
+      this.logger.info(
+        { command: parsed.name, invoker: msg.invokerName },
+        "Command denied: invoker not in adminGroups"
+      );
+      try {
+        await this.tsClient.sendTextMessage(COMMAND_DENIED_MESSAGE);
+      } catch (sendErr) {
+        this.logger.error({ err: sendErr }, "Failed to send permission-denied message to chat");
+      }
+      return;
+    }
+
+    this.logger.info(
+      { command: parsed.name, args: parsed.args, invoker: msg.invokerName },
+      "Command received"
+    );
+
+    try {
+      const response = await this.executeCommand(parsed, msg);
+      if (response) {
+        await this.tsClient.sendTextMessage(response);
+      }
+    } catch (err) {
+      this.logger.error({ err, command: parsed.name }, "Command execution error");
+      try {
+        await this.tsClient.sendTextMessage(
+          `Error: ${(err as Error).message}`
+        );
+      } catch (sendErr) {
+        this.logger.error({ err: sendErr }, "Failed to send error message to chat");
+      }
+    }
+  }
+
+  /**
+   * Decide whether a chat command may run for this sender. Reads adminGroups
+   * live from this.config (the router mutates the same object). Only performs
+   * the async group lookup when the synchronous decision is "deny because the
+   * event carried no groups" — i.e. an admin command, enforcement on, and
+   * empty invokerGroups. Fails closed if groups remain undeterminable.
+   */
+  private async isCommandAllowed(commandName: string, msg: TS3TextMessage): Promise<boolean> {
+    const adminGroups = this.config.adminGroups;
+    if (canRunCommand(commandName, msg.invokerGroups, adminGroups)) return true;
+    // Here: admin command, enforcement on, and the provided groups did not match.
+    // If the event actually carried groups, this is a genuine deny — no lookup.
+    if (msg.invokerGroups.length > 0) return false;
+    // Groups unknown (sender not in the view cache): one targeted lookup, then
+    // re-decide. canRunCommand([], …) is false ⇒ fail-closed when still unknown.
+    const groups = await this.lookupInvokerGroups(msg.invokerId);
+    return canRunCommand(commandName, groups, adminGroups);
+  }
+
+  /**
+   * Best-effort lookup of a sender's server groups by client id, via the
+   * channel client list (whose entries already carry parsed serverGroups).
+   * Returns [] when the client can't be found or the query fails (→ deny).
+   */
+  private async lookupInvokerGroups(invokerId: string): Promise<string[]> {
+    const clid = Number(invokerId);
+    if (!Number.isFinite(clid) || clid <= 0) return [];
+    try {
+      const clients = await this.tsClient.getClientsInChannel();
+      const match = clients.find((c) => c.id === clid);
+      return match?.serverGroups ?? [];
+    } catch {
+      return [];
+    }
+  }
+```
+
+- [ ] **Step 4: Run the gate tests to verify they pass**
+
+Run: `npx vitest run "src/bot/instance.test.ts"`
+Expected: PASS (existing `runExclusive` tests + the 7 new gate tests).
+
+- [ ] **Step 5: Confirm the live-config invariant**
+
+Confirm `BotInstance` reads `adminGroups` from the shared, mutable config — not a copy. The constructor stores `this.config = options.config` (line 91 region) and the router (`src/web/api/bot.ts`) mutates that same object; no propagation call is needed. Quick check:
+
+Run: `grep -n "this.config = options.config\|this.config.adminGroups" "src/bot/instance.ts"`
+Expected: shows the assignment and the gate read (proves the gate uses the live reference).
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add "src/bot/instance.ts" "src/bot/instance.test.ts"
+git commit -m "feat(bot): gate admin chat commands on adminGroups with fallback + deny reply"
+```
+
+---
+
+### Task 4: Read/write `adminGroups` in the settings endpoints
+
+**Files:**
+- Modify: `src/web/api/bot.ts` (GET `/settings` lines 35-41; POST `/settings` lines 45-97)
+- Test: `src/web/api/bot.test.ts` (append `it` cases to the first `describe("bot router /settings", …)` block)
+
+**Interfaces:**
+- Consumes: existing `config.adminGroups: number[]` (already declared in `src/data/config.ts`, default `[]`).
+- Produces: `GET /api/bot/settings` returns `adminGroups: number[]`; `POST /api/bot/settings` accepts, validates, persists, and echoes `adminGroups`.
+
+- [ ] **Step 1: Write the failing tests**
+
+Append these `it` cases inside the existing first `describe("bot router /settings", …)` block in `src/web/api/bot.test.ts` (it already wires `app`, `config`, and an admin `cookie`):
+
+```ts
+  it("GET /settings includes adminGroups reflecting config", async () => {
+    config.adminGroups = [6, 8];
+    const res = await request(app).get("/api/bot/settings").set("Cookie", cookie);
+    expect(res.status).toBe(200);
+    expect(res.body.adminGroups).toEqual([6, 8]);
+  });
+
+  it("POST /settings persists a validated adminGroups and GET returns it", async () => {
+    const res = await request(app)
+      .post("/api/bot/settings")
+      .set("Cookie", cookie)
+      .send({ adminGroups: [6, 8] });
+    expect(res.status).toBe(200);
+    expect(res.body.adminGroups).toEqual([6, 8]);
+    expect(config.adminGroups).toEqual([6, 8]);
+    const followUp = await request(app).get("/api/bot/settings").set("Cookie", cookie);
+    expect(followUp.body.adminGroups).toEqual([6, 8]);
+  });
+
+  it("POST /settings filters invalid adminGroups entries (negative, non-integer, non-number)", async () => {
+    const res = await request(app)
+      .post("/api/bot/settings")
+      .set("Cookie", cookie)
+      .send({ adminGroups: [6, -1, 2.5, "x", 8] });
+    expect(res.status).toBe(200);
+    expect(config.adminGroups).toEqual([6, 8]);
+  });
+
+  it("POST /settings ignores a non-array adminGroups (leaves config unchanged)", async () => {
+    config.adminGroups = [6];
+    const res = await request(app)
+      .post("/api/bot/settings")
+      .set("Cookie", cookie)
+      .send({ adminGroups: "6" });
+    expect(res.status).toBe(200);
+    expect(config.adminGroups).toEqual([6]);
+  });
+```
+
+- [ ] **Step 2: Run the tests to verify they fail**
+
+Run: `npx vitest run "src/web/api/bot.test.ts"`
+Expected: FAIL — `res.body.adminGroups` is `undefined`; the POST does not persist `adminGroups`.
+
+- [ ] **Step 3: Extend the GET handler**
+
+In `src/web/api/bot.ts`, add `adminGroups` to the GET `/settings` response (the handler at lines 35-41):
+
+```ts
+  router.get("/settings", requireNotGuest, (_req, res) => {
+    res.json({
+      idleTimeoutMinutes: config.idleTimeoutMinutes ?? 0,
+      autoPauseOnEmpty: config.autoPauseOnEmpty,
+      adminGroups: config.adminGroups ?? [],
+      guestMode: config.guestMode,
+    });
+  });
+```
+
+- [ ] **Step 4: Extend the POST handler**
+
+In the POST `/settings` handler: (a) pull `adminGroups` out of `req.body`; (b) validate + assign before `saveConfig`; (c) echo it in the response. Change the destructuring line (46):
+
+```ts
+    const { idleTimeoutMinutes, autoPauseOnEmpty, guestMode, adminGroups } = req.body;
+```
+
+Add this block just before `saveConfig(configPath, config);` (line 77):
+
+```ts
+    if (Array.isArray(adminGroups)) {
+      config.adminGroups = adminGroups.filter(
+        (g: unknown): g is number =>
+          typeof g === "number" && Number.isInteger(g) && g >= 0,
+      );
+    }
+```
+
+Add `adminGroups` to BOTH `res.json({ … })` bodies in this handler (the success response near line 92, and — if present — keep them consistent):
+
+```ts
+    res.json({
+      idleTimeoutMinutes: config.idleTimeoutMinutes ?? 0,
+      autoPauseOnEmpty: config.autoPauseOnEmpty,
+      adminGroups: config.adminGroups ?? [],
+      guestMode: config.guestMode,
+    });
+```
+
+- [ ] **Step 5: Run the tests to verify they pass**
+
+Run: `npx vitest run "src/web/api/bot.test.ts"`
+Expected: PASS (existing settings/guest-mode tests + the 4 new adminGroups tests).
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add "src/web/api/bot.ts" "src/web/api/bot.test.ts"
+git commit -m "feat(api): read/write adminGroups in bot settings endpoints"
+```
+
+---
+
+### Task 5: Admin-only "命令权限" section in Settings.vue
+
+**Files:**
+- Modify: `web/src/views/Settings.vue` (template: add a section after the Guest Mode section, before the Bot Profile section ~line 506; script: add state + handlers near the guest-mode block ~line 1093; hydrate in `loadIdleTimeout` ~line 1024)
+
+**Interfaces:**
+- Consumes: `GET /api/bot/settings` → `adminGroups: number[]`; `POST /api/bot/settings` with `{ adminGroups: number[] }` (Task 4). Existing `session.isAdmin.value`.
+- Produces: UI only.
+
+- [ ] **Step 1: Add the template section**
+
+In `web/src/views/Settings.vue`, insert this `<section>` immediately AFTER the closing `</section>` of the Guest Mode block (the one whose title is `游客模式`, ends ~line 505) and BEFORE the `<!-- Bot Profile … -->` section:
+
+```html
+    <!-- Command Permissions (admin only) -->
+    <section v-if="session.isAdmin.value" class="settings-section">
+      <h2 class="section-title">命令权限</h2>
+      <p class="profile-section-hint">
+        限制谁能在 TeamSpeak 聊天里运行管理类命令（stop / clear / remove / move / vol / mode）。
+        填写允许的服务器组 ID（逗号分隔）。留空 = 不限制，所有人可用。如何查看服务器组 ID 见 README。
+      </p>
+      <div class="setting-row">
+        <div class="prefix-input-wrap">
+          <input v-model="adminGroupsText" class="input input-sm" placeholder="如 6, 8" />
+          <button class="btn-primary" :disabled="adminGroupsSaving" @click="saveAdminGroups">
+            {{ adminGroupsSaving ? '保存中…' : '保存' }}
+          </button>
+        </div>
+      </div>
+    </section>
+```
+
+- [ ] **Step 2: Add the script state + handlers**
+
+In the `<script setup>` block, add this just after the guest-mode block (after `saveGuestMode` closes, ~line 1093):
+
+```ts
+// --- Command permissions (admin only) ---
+const adminGroupsText = ref('');
+const adminGroupsSaving = ref(false);
+
+function applyAdminGroupsFromServer(groups: unknown) {
+  if (Array.isArray(groups)) {
+    adminGroupsText.value = groups.filter((g) => typeof g === 'number').join(', ');
+  }
+}
+
+function parseAdminGroups(text: string): number[] {
+  return text
+    .split(',')
+    .map((s) => s.trim())
+    .filter((s) => s.length > 0)
+    .map((s) => Number(s))
+    .filter((n) => Number.isInteger(n) && n >= 0);
+}
+
+async function saveAdminGroups() {
+  adminGroupsSaving.value = true;
+  try {
+    const res = await axios.post('/api/bot/settings', { adminGroups: parseAdminGroups(adminGroupsText.value) });
+    applyAdminGroupsFromServer(res.data?.adminGroups);
+  } catch { /* ignore */ } finally {
+    adminGroupsSaving.value = false;
+  }
+}
+```
+
+- [ ] **Step 3: Hydrate on load**
+
+In `loadIdleTimeout` (the existing function ~lines 1024-1031), add the hydrate call alongside `applyGuestModeFromServer`:
+
+```ts
+async function loadIdleTimeout() {
+  try {
+    const res = await axios.get('/api/bot/settings');
+    idleTimeout.value = res.data.idleTimeoutMinutes ?? 0;
+    autoPauseOnEmpty.value = res.data.autoPauseOnEmpty ?? false;
+    applyGuestModeFromServer(res.data.guestMode);
+    applyAdminGroupsFromServer(res.data.adminGroups);
+  } catch { /* ignore */ }
+}
+```
+
+- [ ] **Step 4: Type-check the frontend**
+
+Run: `cd "web" && npx vue-tsc --noEmit`
+Expected: no errors.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add "web/src/views/Settings.vue"
+git commit -m "feat(web): admin-only command-permission (adminGroups) settings section"
+```
+
+---
+
+### Task 6: Document the feature in the README
+
+**Files:**
+- Modify: `README.md`
+
+**Interfaces:**
+- Consumes: nothing (docs).
+- Produces: user-facing documentation of the feature + how to find TS server-group IDs.
+
+- [ ] **Step 1: Locate the insertion point**
+
+Run: `grep -n "游客模式\|Guest\|权限\|adminGroups" "README.md"`
+Expected: shows the guest-mode / permissions area. Insert the new subsection immediately after the guest-mode documentation block (or, if there is a dedicated permissions/features section, at its end).
+
+- [ ] **Step 2: Add the documentation block**
+
+Insert this markdown at the chosen point:
+
+```markdown
+### TeamSpeak 命令权限（管理类命令限制）
+
+默认情况下，频道里任何人都能运行所有聊天命令。你可以把一组「管理类」命令限制为只有特定 TeamSpeak 服务器组的成员才能运行：
+
+- 受限命令：`stop`、`clear`、`remove`、`move`、`vol`、`mode`
+- 其余命令（点歌、队列、跳过、歌词等）始终对所有人开放
+- **默认不限制**：管理服务器组列表为空时，所有命令对所有人开放（向后兼容）
+
+**配置方式**
+
+- 网页端：设置 → 命令权限，填写允许的服务器组 ID（逗号分隔），保存即时生效。
+- 或编辑 `config.json` 的 `adminGroups`（数字数组），例如 `"adminGroups": [6, 8]`。
+
+填入任意服务器组 ID 后，限制立即开启：只有属于这些组之一的用户才能运行受限命令，其他人会收到「⛔ 需要管理员权限」的提示。
+
+> 提示（fail-closed）：当受限命令来自一个机器人当前看不到其服务器组的发送者（例如不在机器人所在频道的私聊），机器人会尝试查询其分组；若仍无法确定，则拒绝执行。
+
+**如何查看服务器组 ID**
+
+在 TeamSpeak 客户端中打开「权限 → 服务器组」（Permissions → Server Groups）对话框，选中某个组后，其 ID 会显示在标题栏/状态栏；或在服务器组管理界面中查看每个组对应的数字 ID。把需要授权的组 ID 填入上面的设置即可。
+```
+
+- [ ] **Step 3: Sanity-check the docs render**
+
+Run: `grep -n "命令权限\|adminGroups" "README.md"`
+Expected: shows the newly added section.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add "README.md"
+git commit -m "docs: document TeamSpeak chat-command permission control"
+```
+
+---
+
+## Final verification (after all tasks)
+
+- [ ] Remove stale compiled output, then run the full suite:
+
+```bash
+rm -rf dist
+npm test
+```
+Expected: all tests pass (the new `canRunCommand`, `toTS3TextMessage`, gate, and `adminGroups` settings tests included).
+
+- [ ] Full build (backend `tsc` + frontend `vue-tsc` + vite):
+
+```bash
+npm run build
+```
+Expected: SUCCESS (no type errors).

docs/superpowers/plans/2026-07-03-spotify-stage4-polish-docs.md

@@ -0,0 +1,520 @@
+# Spotify Source — Stage 4 (Polish, Config UI, Docs) Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Complete the Spotify source's last mile — make it user-configurable and user-authorizable from the web UI, document it (with the required safety warnings), and land the deferred OAuth-robustness hardening.
+
+**Architecture:** The Stage-3 OAuth endpoints (`/api/spotify/{login,callback,status}`) and the single shared `SpotifyOAuth` already exist but are unreachable from the UI. Stage 4 adds: (1) a `spotify` block to the `/api/bot/settings` config API (secret masked); (2) a resolved-backend indicator on `/status`; (3) OAuth refresh/verifier hardening; (4) the approved Settings "Connect Spotify" card (spec §8); (5) the README Spotify section (spec §11/§12). Deferred (documented, NOT built this stage): runtime binary auto-download, connect play-not-reflected diagnostics, extra watchdog.
+
+**Tech Stack:** TypeScript (ESM, `.js` specifiers), Express, Vitest (root config also runs `web/src/**/*.test.ts` — stores/composables only; there is NO `.vue` component-test harness), Vue 3 + `<script setup>` + Pinia, `vue-tsc` (web build gate).
+
+## Global Constraints
+
+- **Safe-by-default (spec §2/§7):** Spotify stays inert unless `enabled` AND authorized AND a resolvable binary. Nothing in this stage may change behavior when `spotify.enabled === false`.
+- **Never expose secrets (spec §2/§7):** `clientSecret` is the operator's own value. The config GET API MUST NOT return the raw `clientSecret` — return only a boolean `hasClientSecret`. POST overwrites `clientSecret` only when a non-empty string is supplied (blank/omitted = unchanged). No bundled credentials, no shared Developer app.
+- **Permissions:** config writes gated by `requirePermission("bot.manage")`; reads by `requireNotGuest`; the OAuth login card is additionally shown only to `can('platform.auth')` / admins — mirror the existing Settings gating.
+- **Validation mirrors `src/data/config.ts`:** `backend` ∈ `{"auto","go-librespot","librespot"}`; `bitrate` ∈ `{96,160,320}`; `deviceName` non-empty trimmed string (else keep prior); strings coerced/guarded. Reuse the exact value sets.
+- **Language:** README additions are in Chinese (repo is Chinese-only), matching existing heading style (`## 功能特性` etc.).
+- **Licensing (spec §9):** go-librespot is GPL-3.0 — the README must include its license note + a source offer; the bot ships NO binary (source-only Rust librespot; Linux-only go-librespot assets).
+- **Honesty:** live audio / Connect control / real OAuth round-trip remain NOT verifiable here (need Premium + real binaries + a real account). "Done" = unit-tested (mocked process/HTTP/FS), `tsc --noEmit` clean, `cd web && npm run build` clean, full suite green, reviewed. Never claim audio works.
+- **Branch:** all work on `feat/spotify-audio`. Do NOT create per-task branches.
+- **Full suite command:** `npx vitest run --no-file-parallelism` (avoids the users.test.ts bcrypt LOAD flake). Typecheck: `npx tsc --noEmit`. Web build: `cd web && npm run build`.
+
+---
+
+### Task 1: `/api/bot/settings` reads & writes the `spotify` block (secret masked)
+
+**Files:**
+- Modify: `src/web/api/bot.ts` (GET `/settings` response + POST `/settings` destructure/validate/echo)
+- Test: `src/web/api/bot.test.ts`
+
+**Interfaces:**
+- Consumes: `config.spotify: SpotifyConfig` (`{ enabled, backend, clientId, clientSecret, deviceName, bitrate }`), `saveConfig(configPath, config)`, `requirePermission("bot.manage")`, `requireNotGuest` — all already imported/used in this file.
+- Produces (new response shape on GET+POST, both add a `spotify` key):
+  ```ts
+  // masked view — NEVER includes clientSecret
+  spotify: {
+    enabled: boolean;
+    backend: "auto" | "go-librespot" | "librespot";
+    clientId: string;
+    deviceName: string;
+    bitrate: number;
+    hasClientSecret: boolean;   // whether a non-empty secret is stored
+  }
+  ```
+
+- [ ] **Step 1.1: Write failing tests.** Add to `src/web/api/bot.test.ts` (mirror the existing settings tests — reuse their app/harness + auth stubs). Cover:
+  1. GET `/api/bot/settings` includes a `spotify` object with `enabled/backend/clientId/deviceName/bitrate/hasClientSecret` and does NOT include a `clientSecret` key. With a stored secret, `hasClientSecret === true`; with `clientSecret: ""`, `false`.
+  2. POST `/api/bot/settings` with `{ spotify: { enabled: true, backend: "librespot", clientId: "cid", deviceName: "Dev", bitrate: 160 } }` updates all those fields and echoes the masked view; `saveConfig` called.
+  3. POST with `{ spotify: { backend: "bogus" } }` leaves `backend` unchanged (invalid rejected, not 400 for the whole request — partial-merge semantics like the other fields). Same for `bitrate: 999`.
+  4. POST with `{ spotify: { clientSecret: "newsecret" } }` sets the secret (assert via `hasClientSecret === true` in the echo AND that `config.spotify.clientSecret === "newsecret"`). POST with `{ spotify: { clientSecret: "" } }` does NOT overwrite an existing secret.
+  5. POST `/api/bot/settings` spotify write requires `bot.manage` (a member without it → 403; reuse the existing 403 test pattern).
+  6. An existing settings POST that omits `spotify` still works and does not touch `config.spotify` (no regression).
+
+- [ ] **Step 1.2: Run the tests — expect failure** (`npx vitest run src/web/api/bot.test.ts`): the `spotify` key is absent from responses.
+
+- [ ] **Step 1.3: Extend GET `/settings`.** Add the masked spotify view to the response object (both the GET at ~line 36 and the POST echo at ~line 103 — extract a local helper to avoid duplication):
+  ```ts
+  // near the top of createBotRouter, after other helpers:
+  const maskedSpotify = () => ({
+    enabled: config.spotify.enabled,
+    backend: config.spotify.backend,
+    clientId: config.spotify.clientId,
+    deviceName: config.spotify.deviceName,
+    bitrate: config.spotify.bitrate,
+    hasClientSecret: config.spotify.clientSecret.length > 0,
+  });
+  ```
+  Add `spotify: maskedSpotify(),` to BOTH the GET response and the POST echo object.
+
+- [ ] **Step 1.4: Handle `spotify` in POST `/settings`.** Add `spotify` to the destructure and a partial-merge block (mirror config.ts validation). Place before `saveConfig(...)`:
+  ```ts
+  const VALID_BACKENDS = ["auto", "go-librespot", "librespot"] as const;
+  const VALID_BITRATES = [96, 160, 320];
+  const sp = req.body?.spotify;
+  if (sp && typeof sp === "object") {
+    const t = config.spotify;
+    if (typeof sp.enabled === "boolean") t.enabled = sp.enabled;
+    if (typeof sp.backend === "string" && (VALID_BACKENDS as readonly string[]).includes(sp.backend)) {
+      t.backend = sp.backend as SpotifyConfig["backend"];
+    }
+    if (typeof sp.clientId === "string") t.clientId = sp.clientId;
+    // Secret is write-only + set-on-non-empty so a blank field never wipes it.
+    if (typeof sp.clientSecret === "string" && sp.clientSecret.length > 0) {
+      t.clientSecret = sp.clientSecret;
+    }
+    if (typeof sp.deviceName === "string" && sp.deviceName.trim().length > 0) {
+      t.deviceName = sp.deviceName.trim();
+    }
+    if (typeof sp.bitrate === "number" && VALID_BITRATES.includes(sp.bitrate)) {
+      t.bitrate = sp.bitrate;
+    }
+  }
+  ```
+  Add the type import if not present: `import type { SpotifyConfig } from "../../data/config.js";`.
+
+- [ ] **Step 1.5: Run tests — expect pass** (`npx vitest run src/web/api/bot.test.ts`). Then `npx tsc --noEmit` clean.
+
+- [ ] **Step 1.6: Commit.**
+  ```bash
+  git add src/web/api/bot.ts src/web/api/bot.test.ts
+  git commit -m "feat(spotify): expose spotify config on /api/bot/settings (secret masked) [S4.1]"
+  ```
+
+---
+
+### Task 2: `/api/spotify/status` reports the RESOLVED backend + binary availability (D11)
+
+**Files:**
+- Create: `src/music/spotify/backend-select.ts` (pure resolver) + `src/music/spotify/backend-select.test.ts`
+- Modify: `src/music/spotify/controller.ts` (delegate `chooseBackend` to the resolver)
+- Modify: `src/web/api/spotify.ts` (`/status` shape + `getBackendInfo` type)
+- Modify: `src/web/server.ts` (`getBackendInfo` computes the resolved kind)
+- Modify: `src/web/api/spotify.test.ts` (update the `/status` shape assertion)
+
+**Interfaces:**
+- Produces:
+  ```ts
+  // backend-select.ts
+  export type SpotifyBackendKind = "go-librespot" | "librespot";
+  export function resolveSpotifyBackendKind(
+    backend: "auto" | "go-librespot" | "librespot",
+    goPresent: boolean,
+    rustPresent: boolean,
+  ): SpotifyBackendKind | null;
+  // spotify.ts getBackendInfo now returns:
+  { backend: string; deviceName: string; binaryAvailable: boolean }
+  // /status response now:
+  { authorized: boolean; backend: string; deviceName: string; binaryAvailable: boolean }
+  ```
+- Note: `SpotifyBackendKind` currently lives in `controller.ts`. Move the canonical definition to `backend-select.ts` and re-export it from `controller.ts` (`export type { SpotifyBackendKind } from "./backend-select.js";`) so existing importers are unaffected.
+
+- [ ] **Step 2.1: Write failing resolver tests** `src/music/spotify/backend-select.test.ts` — the same 8-case matrix S3.5 used, but against the pure function:
+  ```ts
+  import { describe, it, expect } from "vitest";
+  import { resolveSpotifyBackendKind as pick } from "./backend-select.js";
+  describe("resolveSpotifyBackendKind", () => {
+    it("auto: go present -> go-librespot", () => expect(pick("auto", true, true)).toBe("go-librespot"));
+    it("auto: go absent, rust present -> librespot", () => expect(pick("auto", false, true)).toBe("librespot"));
+    it("auto: neither -> null", () => expect(pick("auto", false, false)).toBeNull());
+    it("go-librespot: present -> go-librespot", () => expect(pick("go-librespot", true, true)).toBe("go-librespot"));
+    it("go-librespot: absent -> null even if rust present", () => expect(pick("go-librespot", false, true)).toBeNull());
+    it("librespot: present -> librespot", () => expect(pick("librespot", true, true)).toBe("librespot"));
+    it("librespot: absent -> null even if go present", () => expect(pick("librespot", true, false)).toBeNull());
+    it("auto default fallthrough matches auto", () => expect(pick("auto", true, false)).toBe("go-librespot"));
+  });
+  ```
+
+- [ ] **Step 2.2: Run — expect failure** (module missing).
+
+- [ ] **Step 2.3: Create the resolver** `src/music/spotify/backend-select.ts`:
+  ```ts
+  /** Which concrete backend runs for a given config + host binary availability. */
+  export type SpotifyBackendKind = "go-librespot" | "librespot";
+
+  /**
+   * Pure backend selection shared by SpotifyController.chooseBackend() (per-bot)
+   * and the web /status endpoint (process-wide). Booleans in, no IO — the caller
+   * supplies platform+binary presence.
+   */
+  export function resolveSpotifyBackendKind(
+    backend: "auto" | "go-librespot" | "librespot",
+    goPresent: boolean,
+    rustPresent: boolean,
+  ): SpotifyBackendKind | null {
+    switch (backend) {
+      case "go-librespot":
+        return goPresent ? "go-librespot" : null;
+      case "librespot":
+        return rustPresent ? "librespot" : null;
+      case "auto":
+      default:
+        if (goPresent) return "go-librespot";
+        if (rustPresent) return "librespot";
+        return null;
+    }
+  }
+  ```
+
+- [ ] **Step 2.4: Run resolver tests — expect pass.**
+
+- [ ] **Step 2.5: Delegate from the controller.** In `controller.ts`, import the type+resolver **with a local binding** (a bare `export … from` re-export does NOT create a local name, and `SpotifyBackendKind` is still referenced locally at `chooseBackend()`'s return type and `buildBackend(kind: SpotifyBackendKind)` → would fail TS2304). Use:
+  ```ts
+  import { resolveSpotifyBackendKind, type SpotifyBackendKind } from "./backend-select.js";
+  export type { SpotifyBackendKind };   // keep the name exported for existing importers
+  // ...
+  chooseBackend(): SpotifyBackendKind | null {
+    return resolveSpotifyBackendKind(this.config.backend, this.goPresent(), this.rustPresent());
+  }
+  ```
+  Remove the old inline `switch` body and the standalone `export type SpotifyBackendKind = "go-librespot" | "librespot";` line. Keep `goPresent()/rustPresent()` as-is. Run `npx vitest run src/music/spotify/controller.test.ts` — the S3.5 matrix + auth-gate specs MUST still pass unchanged.
+
+- [ ] **Step 2.6: Update `/status`** in `src/web/api/spotify.ts` — extend the `getBackendInfo` type and the response:
+  ```ts
+  getBackendInfo: () => { backend: string; deviceName: string; binaryAvailable: boolean };
+  // ...
+  router.get("/status", requireNotGuest, (_req, res) => {
+    const info = opts.getBackendInfo();
+    res.json({
+      authorized: oauth.isAuthorized(),
+      backend: info.backend,
+      deviceName: info.deviceName,
+      binaryAvailable: info.binaryAvailable,
+    });
+  });
+  ```
+
+- [ ] **Step 2.7: Compute the resolved kind in `server.ts`.** Replace the `getBackendInfo` closure (currently returns raw `config.spotify.backend`) with a resolver call using live probes. Add imports `import { resolveSpotifyBackendKind } from "../music/spotify/backend-select.js";` and `import { isGoLibrespotSupported, findGoLibrespot, isRustLibrespotSupported, findLibrespot } from "../music/spotify/binary.js";` and `import { existsSync } from "node:fs";` (verify existsSync isn't already imported):
+  ```ts
+  getBackendInfo: () => {
+    const goPresent = isGoLibrespotSupported() && existsSync(findGoLibrespot());
+    const rustPresent = isRustLibrespotSupported() && existsSync(findLibrespot());
+    const resolved = resolveSpotifyBackendKind(options.config.spotify.backend, goPresent, rustPresent);
+    return {
+      backend: resolved ?? "none",
+      deviceName: options.config.spotify.deviceName,
+      binaryAvailable: resolved !== null,
+    };
+  },
+  ```
+
+- [ ] **Step 2.8: Update the `/status` test** in `src/web/api/spotify.test.ts` — the existing `toEqual({ authorized, backend, deviceName })` must become `toEqual({ authorized, backend, deviceName, binaryAvailable })`; extend the fake `getBackendInfo` in that test to return `binaryAvailable`. This is THIS task's contract change; update only the status test.
+
+- [ ] **Step 2.9: Verify.** `npx vitest run src/music/spotify/backend-select.test.ts src/music/spotify/controller.test.ts src/web/api/spotify.test.ts` all pass; `npx tsc --noEmit` clean.
+
+- [ ] **Step 2.10: Commit.**
+  ```bash
+  git add src/music/spotify/backend-select.ts src/music/spotify/backend-select.test.ts src/music/spotify/controller.ts src/web/api/spotify.ts src/web/server.ts src/web/api/spotify.test.ts
+  git commit -m "feat(spotify): report resolved backend + binaryAvailable on /status; share backend resolver [S4.2]"
+  ```
+
+---
+
+### Task 3: OAuth robustness — in-flight refresh cache + verifier TTL/cap (D9)
+
+**Files:**
+- Modify: `src/music/spotify/spotify-oauth.ts`
+- Test: `src/music/spotify/spotify-oauth.test.ts`
+
+**Interfaces:**
+- Consumes: existing `SpotifyOAuthOptions.deps?: { http?: AxiosInstance }`. Extend deps with an optional clock for testability: `deps?: { http?: AxiosInstance; now?: () => number }`.
+- Produces: no public API change. Internals: `refreshInFlight: Promise<string|null> | null`; `pendingVerifiers: Map<string, { verifier: string; expiresAt: number }>`.
+
+- [ ] **Step 3.1: Write failing tests.** Add to `src/music/spotify/spotify-oauth.test.ts`:
+  1. **Concurrent refresh collapses to one POST.** Build with a fake `http` whose `post("/api/token")` returns a promise you resolve manually (a `Deferred`) or counts calls, and a MUTABLE fake store (`save()` persists, `load()` returns the last saved value) seeded with an expired token. Fire two `getAccessToken()` calls before the POST resolves; assert `http.post` called exactly ONCE and both awaited results equal the new access token.
+  2. **In-flight clears after settle.** Using the same mutable store + a mutable `now` (`let t=…; now=()=>t`), after test 1 resolves, advance `t` past the newly-saved `expiresAt` and call `getAccessToken()` again → a NEW POST fires (count → 2). (Requires `toTokens` on `this.now()` per Step 3.3.)
+  3. **Verifier TTL.** With injected mutable `now`, `buildAuthorizeUrl()` at t=0 (capture its `state`), advance `now` to TTL+1, then `handleCallback(code, state)` → returns false (expired) and the entry is gone.
+  4. **Verifier cap.** Call `buildAuthorizeUrl()` `VERIFIER_MAX + 1` times (capturing the FIRST `state`); assert **behaviorally** that `handleCallback(code, <first state>)` now returns false (evicted as oldest). Prefer this behavioral assertion over inspecting the private `pendingVerifiers` map (no `as any` cast). Use the injected `now` for all timing.
+
+- [ ] **Step 3.2: Run — expect failure.**
+
+- [ ] **Step 3.3: Add the clock + in-flight refresh.** In the constructor: `this.now = o.deps?.now ?? (() => Date.now());` (add `private now: () => number;`). Rewrite `getAccessToken()` + add the in-flight field:
+  ```ts
+  private refreshInFlight: Promise<string | null> | null = null;
+
+  async getAccessToken(): Promise<string | null> {
+    if (!this.clientId) return null;
+    const tokens = this.store.load();
+    if (!tokens?.refreshToken) return null;
+    if (tokens.accessToken && this.now() < tokens.expiresAt) return tokens.accessToken;
+    // Collapse concurrent refreshes: rotation makes a second in-flight refresh
+    // use a refresh token the first one already invalidated.
+    if (this.refreshInFlight) return this.refreshInFlight;
+    this.refreshInFlight = this.refresh(tokens).finally(() => {
+      this.refreshInFlight = null;
+    });
+    return this.refreshInFlight;
+  }
+  ```
+  Replace the `Date.now()` in `getAccessToken` (spotify-oauth.ts:188) with `this.now()`. **Also change `toTokens` (spotify-oauth.ts:~221) to compute `expiresAt` from `this.now()` instead of `Date.now()`** — this is REQUIRED for testability: if `toTokens` kept real `Date.now()` while `getAccessToken` used an injected fixed clock, a freshly-refreshed token's `expiresAt` would sit far in the injected past/future and the "subsequent call → new POST" test would be non-deterministic. With both on `this.now()`, the test drives a mutable `now` (e.g. `let t = 0; const now = () => t;`) and advances it past the new `expiresAt` to force the second refresh.
+
+- [ ] **Step 3.4: Add verifier TTL + cap.** Change the map type and the two touch points:
+  ```ts
+  private pendingVerifiers = new Map<string, { verifier: string; expiresAt: number }>();
+  private static readonly VERIFIER_TTL_MS = 10 * 60 * 1000;
+  private static readonly VERIFIER_MAX = 32;
+
+  private evictStaleVerifiers(): void {
+    const t = this.now();
+    for (const [state, e] of this.pendingVerifiers) {
+      if (e.expiresAt < t) this.pendingVerifiers.delete(state);
+    }
+    // Bound memory even if all are unexpired: drop oldest (insertion order).
+    while (this.pendingVerifiers.size >= SpotifyOAuth.VERIFIER_MAX) {
+      const oldest = this.pendingVerifiers.keys().next().value;
+      if (oldest === undefined) break;
+      this.pendingVerifiers.delete(oldest);
+    }
+  }
+  ```
+  In `buildAuthorizeUrl()`: call `this.evictStaleVerifiers();` before the set, then `this.pendingVerifiers.set(state, { verifier, expiresAt: this.now() + SpotifyOAuth.VERIFIER_TTL_MS });`.
+  In `handleCallback()`: replace the `get`:
+  ```ts
+  const entry = this.pendingVerifiers.get(state);
+  if (!entry || entry.expiresAt < this.now()) {
+    this.pendingVerifiers.delete(state);
+    return false;
+  }
+  const verifier = entry.verifier;
+  ```
+  (Keep the existing `finally { this.pendingVerifiers.delete(state); }`.)
+
+- [ ] **Step 3.5: Run tests — expect pass.** Then `npx vitest run src/music/spotify/spotify-oauth.test.ts` (all, incl. prior S3.2 tests) + `npx tsc --noEmit` clean.
+
+- [ ] **Step 3.6: Commit.**
+  ```bash
+  git add src/music/spotify/spotify-oauth.ts src/music/spotify/spotify-oauth.test.ts
+  git commit -m "fix(spotify): collapse concurrent OAuth refresh + TTL/cap PKCE verifiers [S4.3]"
+  ```
+
+---
+
+### Task 4: Settings "Connect Spotify" card (spec §8)
+
+**Files:**
+- Create: `web/src/composables/useSpotifySettings.ts` (pure, testable logic) + `web/src/composables/useSpotifySettings.test.ts`
+- Modify: `web/src/views/Settings.vue` (add the card + wiring)
+
+**Interfaces (composable — the unit-tested surface):**
+```ts
+export interface SpotifyConfigForm {
+  enabled: boolean;
+  backend: "auto" | "go-librespot" | "librespot";
+  clientId: string;
+  clientSecret: string;   // blank means "unchanged"
+  deviceName: string;
+  bitrate: number;
+}
+export interface SpotifyStatus { authorized: boolean; backend: string; deviceName: string; binaryAvailable: boolean; }
+export const SPOTIFY_DISCLAIMER: string;                    // Chinese risk copy
+export function buildSpotifyPayload(f: SpotifyConfigForm): { spotify: Record<string, unknown> };  // omits clientSecret when blank
+export function parseSpotifyRedirect(search: string): "success" | "error" | null;  // from ?spotify=...
+export function statusSummary(s: SpotifyStatus | null, enabled: boolean): { label: string; tone: "ok" | "warn" | "off" };
+```
+
+- [ ] **Step 4.1: Write failing composable tests** `web/src/composables/useSpotifySettings.test.ts` (root vitest picks it up; import from `./useSpotifySettings.js` per the repo's ESM `.js` convention):
+  - `buildSpotifyPayload` includes `clientSecret` only when non-blank; always includes enabled/backend/clientId/deviceName/bitrate under a `spotify` key.
+  - `parseSpotifyRedirect("?spotify=success")==="success"`, `"?spotify=error"==="error"`, `"?x=1"===null`.
+  - `statusSummary(null, false)` → tone `"off"`; `statusSummary({authorized:false,binaryAvailable:false,...}, true)` → tone `"warn"`; `statusSummary({authorized:true,binaryAvailable:true,...}, true)` → tone `"ok"`.
+
+- [ ] **Step 4.2: Run — expect failure** (module missing).
+
+- [ ] **Step 4.3: Implement the composable** `web/src/composables/useSpotifySettings.ts`:
+  ```ts
+  export interface SpotifyConfigForm { enabled: boolean; backend: "auto" | "go-librespot" | "librespot"; clientId: string; clientSecret: string; deviceName: string; bitrate: number; }
+  export interface SpotifyStatus { authorized: boolean; backend: string; deviceName: string; binaryAvailable: boolean; }
+
+  // 实验性 · 灰色地带 · 需要 Premium · 使用你自己的开发者应用凭据
+  export const SPOTIFY_DISCLAIMER =
+    "实验性功能：通过 librespot 播放 Spotify 需要 Spotify Premium 账号，并使用你自己注册的 Spotify 开发者应用凭据。" +
+    "该方式处于 Spotify 服务条款的灰色地带，风险自负；默认关闭，不会内置任何共享凭据。";
+
+  export function buildSpotifyPayload(f: SpotifyConfigForm): { spotify: Record<string, unknown> } {
+    const spotify: Record<string, unknown> = {
+      enabled: f.enabled,
+      backend: f.backend,
+      clientId: f.clientId,
+      deviceName: f.deviceName,
+      bitrate: f.bitrate,
+    };
+    if (f.clientSecret && f.clientSecret.length > 0) spotify.clientSecret = f.clientSecret;
+    return { spotify };
+  }
+
+  export function parseSpotifyRedirect(search: string): "success" | "error" | null {
+    const v = new URLSearchParams(search).get("spotify");
+    return v === "success" || v === "error" ? v : null;
+  }
+
+  export function statusSummary(s: SpotifyStatus | null, enabled: boolean): { label: string; tone: "ok" | "warn" | "off" } {
+    if (!enabled) return { label: "已关闭", tone: "off" };
+    if (!s) return { label: "未知", tone: "warn" };
+    if (!s.binaryAvailable) return { label: "未检测到 librespot 可执行文件", tone: "warn" };
+    if (!s.authorized) return { label: "未授权（点击“连接 Spotify”登录）", tone: "warn" };
+    return { label: `已就绪 · 后端 ${s.backend}`, tone: "ok" };
+  }
+  ```
+
+- [ ] **Step 4.4: Run composable tests — expect pass.**
+
+- [ ] **Step 4.5: Add the card to `Settings.vue`.** Insert a new `.account-card`-style section in the settings surface, gated `v-if="can('platform.auth')"` (mirror the platform-login section). Follow the EXISTING patterns in this file:
+  - typed input + Save → mirror the idle-timeout input/saver (`Settings.vue` idle-timeout block + `saveIdleTimeout()` → `POST /api/bot/settings`);
+  - select group → mirror the quality button-group for `backend` and `bitrate`;
+  - toggle → mirror `localAudioEnabled` for `enabled`.
+  **Fields to render (all six):** the `enabled` toggle, `backend` group, `bitrate` group, a `clientId` text input, a `deviceName` text input, and a **Client Secret** field — a write-only password input (`type="password"`, `autocomplete="off"`), left BLANK on load with a "已设置 / 未设置" hint from `hasClientSecret`; a blank secret on Save means "unchanged" (never wipes). The Secret is §8-mandated — do not omit it.
+  Wiring (use `axios`, matching the file's other calls):
+  - **Load** on mount: `GET /api/bot/settings` → populate the form from `res.data.spotify` (leave `clientSecret` blank; show “已设置/未设置” from `hasClientSecret`); `GET /api/spotify/status` → status indicator via `statusSummary`.
+  - **Save**: `POST /api/bot/settings` with `buildSpotifyPayload(form)`; on success re-load status.
+  - **Connect**: `const { data } = await axios.get('/api/spotify/login'); window.location.href = data.url;` (guard errors → show message; a 403 means missing `platform.auth`).
+  - **Redirect handling**: on mount, `parseSpotifyRedirect(window.location.search)`; if `success`/`error`, show a toast/message and strip the param (e.g. `history.replaceState`). Reuse the file's existing notification/toast mechanism if present; otherwise a simple reactive message line.
+  - **Disclaimer**: render `SPOTIFY_DISCLAIMER` prominently in the card.
+  Keep the `<script setup>` logic thin — delegate payload/summary/redirect parsing to the composable (already tested). Do not add a `.vue` test (no harness).
+  - **Keep the two "spotify auth" concepts distinct:** the card's status comes ONLY from `/api/spotify/status` (playback OAuth `authorized`). Do NOT wire it to the player store's `authStatus.spotify`, which reflects `/api/auth/status?platform=spotify` (metadata Web-API `loggedIn`) — a different thing. Leave the player store untouched.
+  - **`vue-tsc` typing:** annotate the form as `reactive<SpotifyConfigForm>({...})` and the status as `ref<SpotifyStatus | null>(null)`; otherwise a button-group assignment (`form.backend = 'librespot'`) widens `backend` to `string` and the `null` init breaks the union passed into `buildSpotifyPayload`/`statusSummary` under `vue-tsc --noEmit`.
+  - **Hard order dependency:** `binaryAvailable` on `/api/spotify/status` exists only after Task 2 — execute this task AFTER Task 2.
+
+- [ ] **Step 4.6: Build gate.** `cd web && npm run build` → `vue-tsc --noEmit` clean + vite build succeeds. Then from root `npx vitest run web/src/composables/useSpotifySettings.test.ts` green.
+
+- [ ] **Step 4.7: Commit.**
+  ```bash
+  git add web/src/composables/useSpotifySettings.ts web/src/composables/useSpotifySettings.test.ts web/src/views/Settings.vue
+  git commit -m "feat(spotify): Connect-Spotify settings card (config + OAuth login + status) [S4.4]"
+  ```
+
+**Notes:** NOT e2e-verifiable (needs a real account/binary). Verified = composable unit tests + `vue-tsc` typecheck + build. The card only exposes config + a login trigger; it never displays the stored `clientSecret` (GET returns `hasClientSecret`, not the value).
+
+---
+
+### Task 5: README Spotify section (Chinese) — spec §9/§11/§12
+
+**Files:**
+- Modify: `README.md` (add a `## Spotify 音源（实验性）` section; add "Spotify" to the feature bullet if appropriate)
+
+**Content (required — write real prose, not placeholders):**
+- [ ] **Step 5.1:** Add a top-level section `## Spotify 音源（实验性）` covering, in Chinese:
+  1. **醒目警告框:** 实验性；需要 **Spotify Premium**；使用**你自己注册的 Spotify 开发者应用**（不内置任何共享凭据）；处于 Spotify 服务条款灰色地带，风险自负；**默认关闭**。
+  2. **工作原理（简述）:** 通过 librespot（Rust）/ go-librespot（Linux）作为独立进程解码 → PCM → ffmpeg 重采样到 48k → 走现有 Opus 发送管线。元数据来自 Spotify Web API。
+  3. **平台矩阵:** Windows → `librespot`(Rust)；Linux/Docker → `go-librespot`（可回退 `librespot`）；`auto` 自动选择（表格）。
+  4. **获取二进制:** Rust librespot 无预编译包 → `cargo install librespot` 或 scoop/choco，或将可执行文件放入项目 `bin/`（`bin/librespot.exe` / `bin/librespot`）。go-librespot 仅提供 Linux 资产（`github.com/devgianlu/go-librespot/releases`），放入 `bin/go-librespot` 或加入 PATH。
+  5. **注册开发者应用 + 回调:** 在 Spotify Developer Dashboard 建应用，取 Client ID，回调地址填 `http://127.0.0.1:<webPort>/api/spotify/callback`（与设置里的 Web 端口一致）；PKCE 不需要 Client Secret。
+  6. **启用步骤:** 设置页「连接 Spotify」卡片 → 填 Client ID、选后端、开启开关 → 保存 → 点「连接 Spotify」完成 OAuth 授权。
+  7. **许可与来源:** go-librespot 为 **GPL-3.0**，作为独立子进程调用（mere aggregation，不影响本项目许可）；附上其源码地址与许可说明（source offer）。
+  8. **故障排查:** 「未检测到 librespot」→ 检查 `bin/` 或 PATH；「未授权」→ 完成 OAuth；Windows 不支持 go-librespot（FIFO 仅限 POSIX）。
+- [ ] **Step 5.2:** Sanity-check the doc renders (headings consistent with existing `##` style; links valid). No code test.
+- [ ] **Step 5.3: Commit.**
+  ```bash
+  git add README.md
+  git commit -m "docs(spotify): README Spotify source section — setup, binaries, warnings, license [S4.5]"
+  ```
+
+---
+
+### Task 6: Rust Connect command retry/backoff (recovery/watchdog — spec §4.3/§13)
+
+**Rationale:** Spec §4.3 mandates "a watchdog + retry/backoff for device-visibility latency and command 202/404 flakiness"; §13 lists Rust Connect as the **top risk** (mitigation: retry/backoff + degrade-to-skipped). Stage 3 already landed the device-visibility watchdog (`waitForDevice()` bounded poll in `rust-librespot.ts`) and per-track device-absence → skip (`findDeviceByName`→null → `playTrack` false → BotInstance skips). The remaining, un-built piece is transient-failure retry/backoff on the Connect **mutating commands** — this task adds it while preserving C3.6 (never reject up the queue path; swallow on exhaustion).
+
+**Files:**
+- Modify: `src/music/spotify/connect-api.ts` (retry/backoff around the mutating PUTs; optional injected `sleep`/`logger`)
+- Modify: `src/music/spotify/controller.ts` (pass `this.logger` into the default `SpotifyConnectApi`)
+- Test: `src/music/spotify/connect-api.test.ts`
+
+**Interfaces:**
+- Consumes: existing `constructor(getToken: () => Promise<string|null>, deps?: { http?: AxiosInstance })`. **Extend deps** to `{ http?: AxiosInstance; sleep?: (ms: number) => Promise<void>; logger?: import("pino").Logger }` (all optional → source-compatible).
+- No public method signature change: `transfer/play/pause/resume/seek` stay `Promise<void>` and still swallow on final failure.
+
+- [ ] **Step 6.1: Write failing tests** in `src/music/spotify/connect-api.test.ts` (reuse the existing `getToken`/`http` injection pattern; inject a no-op `sleep: async () => {}` so no real timers run):
+  1. `play()` retries a transient 404 then succeeds: `http.put` rejects once with `{ response: { status: 404 } }` then resolves → assert `http.put` called TWICE, no throw.
+  2. `play()` exhausts on persistent 500: `http.put` always rejects `{ response: { status: 500 } }` → assert exactly `MAX_ATTEMPTS` calls, no throw (swallowed), and `logger.warn` called once (logger provided).
+  3. Non-transient (403) is NOT retried: reject `{ response: { status: 403 } }` → exactly ONE call, no throw.
+  4. `429` honors a **capped** `Retry-After`: reject once `{ response: { status: 429, headers: { "retry-after": "1" } } }` then resolve → `sleep` called with a bounded delay (≤ the cap) and 2 calls total.
+  5. `transfer()` uses the same retry path (one representative non-`play` mutator) — 404-then-success → 2 calls.
+
+- [ ] **Step 6.2: Confirm Red** (`npx vitest run src/music/spotify/connect-api.test.ts`).
+
+- [ ] **Step 6.3: Implement retry/backoff.** Add module constants + a private helper and route each mutating PUT through it:
+  ```ts
+  const TRANSIENT = new Set([404, 429, 500, 502, 503]);
+  const MAX_ATTEMPTS = 3;
+  const BASE_DELAY_MS = 150;
+  const MAX_DELAY_MS = 2_000;
+  // ...
+  private async mutateWithRetry(put: () => Promise<unknown>): Promise<void> {
+    for (let attempt = 1; attempt <= MAX_ATTEMPTS; attempt++) {
+      try {
+        await put();
+        return;
+      } catch (err: any) {
+        const status = err?.response?.status;
+        if (!TRANSIENT.has(status) || attempt === MAX_ATTEMPTS) {
+          // C3.6: never reject up the queue path — swallow, but surface once.
+          this.logger?.warn({ status }, "Spotify Connect command failed (exhausted/non-retryable)");
+          return;
+        }
+        let delay = Math.min(BASE_DELAY_MS * 2 ** (attempt - 1), MAX_DELAY_MS);
+        if (status === 429) {
+          const ra = Number(err?.response?.headers?.["retry-after"]);
+          if (Number.isFinite(ra) && ra > 0) delay = Math.min(ra * 1000, MAX_DELAY_MS);
+        }
+        await this.sleep(delay);
+      }
+    }
+  }
+  ```
+  In the constructor: `this.sleep = deps?.sleep ?? ((ms) => new Promise((r) => setTimeout(r, ms)));` and `this.logger = deps?.logger;`. Rewrite `transfer/play/pause/resume/seek` so their body becomes: guard `authHeaders()` as today (unauth → `return;`, no retry), then `await this.mutateWithRetry(() => this.http.put(<url>, <body>, { headers, ... }));`. Keep the exact URLs/bodies/params from the current methods.
+
+- [ ] **Step 6.4: Thread the logger from the controller.** In `controller.ts` where the default connect is built:
+  ```ts
+  this.connect = o.connect ?? new SpotifyConnectApi(() => this.oauth.getAccessToken(), { logger: this.logger });
+  ```
+  (`Logger` is already imported in controller.ts.) Injected-connect tests are unaffected.
+
+- [ ] **Step 6.5: Update any conflicting existing connect test.** The S3.3 (C3.6) tests assert mutating calls swallow errors. If any asserts a single `http.put` call on a *transient*-status rejection, it now expects `MAX_ATTEMPTS` — update ONLY that count (this task's contract change). Do NOT weaken the swallow/no-throw guarantees or the non-transient single-call behavior.
+
+- [ ] **Step 6.6: Verify.** `npx vitest run src/music/spotify/connect-api.test.ts src/music/spotify/controller.test.ts` all pass; `npx tsc --noEmit` clean.
+
+- [ ] **Step 6.7: Commit.**
+  ```bash
+  git add src/music/spotify/connect-api.ts src/music/spotify/connect-api.test.ts src/music/spotify/controller.ts
+  git commit -m "feat(spotify): retry/backoff on Connect commands (device-latency/flakiness watchdog) [S4.6]"
+  ```
+
+**Notes:** Bounded retry adds latency only on the (off-audio-path) control commands and only on transient failure; the injected `sleep` makes tests instant. Not e2e-verifiable (no real account). The `202`-accepted-but-not-effective case from §4.3 is NOT handled here (it needs post-command state verification, which the existing poll-based track-end already tolerates) — noted as a follow-up.
+
+---
+
+### Task 7: Stage 4 verification + whole-branch final review + finish
+
+**Files:** none (verification + review + branch finish).
+
+- [ ] **Step 7.1: Full verification.** `npx vitest run --no-file-parallelism` (all green), `npx tsc --noEmit` (clean), `cd web && npm run build` (clean). Record counts.
+- [ ] **Step 7.2: Whole-branch adversarial review.** Review the ENTIRE `feat/spotify-audio` branch (`git merge-base main HEAD`..HEAD) — Stages 2+3+4 — with a fan-out of finders across dimensions (lifecycle/teardown correctness, OAuth/token security + no-secret-leak, backend selection + gating, async races, error handling, test hygiene) and adversarial verification of each finding. Dispatch ONE fix subagent with the consolidated Critical/Important findings; roll up Minors.
+- [ ] **Step 7.3: Address findings**, re-verify, then use superpowers:finishing-a-development-branch to complete the branch (tests green → present options → execute choice).
+
+---
+
+## Self-Review (author)
+
+- **Spec coverage:** §8 Settings card → Task 4; §9 binaries/GPL note + §11 README → Task 5; §12 "docs, README" → Task 5; §12/§4.3/§13 "recovery/watchdog" (Connect retry/backoff) → Task 6 (device-visibility watchdog + per-track skip already landed in Stage 3); D9 → Task 3; D11 → Task 2; config editability (prereq for the card) → Task 1.
+- **Deferred (documented, NOT built this stage), with rationale:** runtime binary auto-download (spec §9 calls it "optional"; README documents manual install + Docker instead — avoids a tar.gz/checksum/platform-detection downloader on the critical path); the §4.3 `202`-accepted-but-not-effective verification (needs post-command playback-state confirmation the poll-based track-end already tolerates); D10's separate play-not-reflected diagnostic beyond the retry-exhaustion `logger.warn` Task 6 adds. These are listed in the ledger as follow-ups.
+- **Placeholder scan:** backend tasks (1–3) carry complete code; frontend/docs (4–5) carry the tested composable in full + explicit wiring contracts + named existing patterns to mirror (Settings.vue has no component-test harness, so exact `.vue` template text is intentionally pattern-referenced, not dictated line-by-line).
+- **Type consistency:** `SpotifyBackendKind` canonicalized in `backend-select.ts`, re-exported from `controller.ts`; `getBackendInfo` return type updated in both `spotify.ts` and its `server.ts` supplier and the `/status` test; `buildSpotifyPayload`/`SpotifyStatus` shapes match Task 1's masked view (`hasClientSecret`) and Task 2's `/status` (`binaryAvailable`).

docs/superpowers/plans/2026-07-06-jellyfin-source.md

@@ -0,0 +1,53 @@
+# Jellyfin 音源（主音源化）实施计划
+
+目标：自建 Jellyfin 服务器成为默认且主要的音源；现有 NetEase / QQ / Bilibili / YouTube / Kugou
+继续编译但默认停用（`enabledProviders` 配置门控，本次不删除）。约束：`src/audio/*`、
+`src/ts-protocol/*` 不改（唯一例外：`queue.ts` 中 `QueuedSong.platform` 联合类型加一个成员，
+纯类型加宽，无任何逻辑改动，否则无法编译）。
+
+## 触点地图
+
+后端：
+- `src/music/provider.ts` — platform 联合类型加 `"jellyfin"`（Song/Playlist/Album/MusicProvider）
+- `src/audio/queue.ts` — 同上（仅类型，一个词）
+- `src/data/database.ts` — PlayHistoryRecord.platform 加 `"jellyfin"`
+- `src/music/auth.ts` — CookieStore 平台加 `"jellyfin"`（token JSON 与 cookie 同路径持久化）
+- `src/data/config.ts` — 新增 `JellyfinConfig`（serverUrl / authMode / username / password /
+  apiKey / userId）+ `enabledProviders`（默认 `["jellyfin"]`）+ 载入清洗 + `isProviderEnabled` /
+  `defaultPlatform` 助手。spotify 仍由 `spotify.enabled` 门控、local 仍由 `localAudioEnabled` 门控
+- `src/music/jellyfin.ts` — 新 Provider：认证（userpass=AuthenticateByName + MediaBrowser 头，
+  401 重登一次；apikey=X-Emby-Token）、搜索（Audio/MusicAlbum/Playlist, StartIndex 翻页）、
+  懒解析播放 URL（direct=`/Audio/{id}/stream?static=true`；320/192/128=`/Audio/{id}/universal`
+  转码）、歌单/专辑/歌词（ticks→秒，404=无歌词）、收藏→InstantMix 电台链（收藏→最近播放→随机曲目）、
+  最近添加/最多播放/流派、播放上报（Sessions/Playing[/Progress|/Stopped]，全部吞错）、
+  音质档（direct 原始直传 / 320k / 192k / 128k）
+- `src/music/api-server.ts` — 按 provider 开关决定是否绑定 3001/3200
+- `src/index.ts` — 构造 JellyfinProvider、加载持久化 token、穿线
+- `src/bot/manager.ts` — 穿线 jellyfinProvider（与 spotifyProvider 同模式）
+- `src/bot/instance.ts` — jellyfin 分支（getProviderFor / getProvider，新 flag `-j`/`-n`）、
+  默认平台=jellyfin、停用音源友好报错、歌单/专辑命令识别 GUID、播放上报挂钩、帮助文本
+- `src/web/api/music.ts` — provider 选择 + 门控、`/providers`、jellyfin 首页数据端点、音质路由
+- `src/web/api/auth.ts` — jellyfin 状态 + 测试连接（/System/Info）；无 QR
+- `src/web/api/player.ts` — 平台白名单 + platformFlag（netease 显式 `-n`）
+- `src/web/api/bot.ts` — settings 读写 jellyfin 配置块（密码/APIKey 写入不回显）+ 热更新 provider
+
+前端（Vue 3，保持 YesPlayMusic 风格；新增文案 zh+en）：
+- `stores/player.ts` — Source 加 jellyfin、enabledProviders 状态、jellyfin 首页数据
+- `views/Search.vue` — 音源条只显示启用的 provider、Jellyfin 徽标
+- `views/Home.vue` — 最近添加 / 播放最多 / 我的歌单 / 收藏 / 流派 区块 + jellyfin FM 卡片
+- `views/Settings.vue` — Jellyfin 连接卡（地址/认证模式/凭据/测试连接）、隐藏停用 provider 的
+  登录卡、jellyfin 音质档
+- `views/Setup.vue` — 向导第 3 步换成 Jellyfin 连接卡
+- `views/Playlist.vue` 等 — ID 均按 string 处理，审计通过（GUID 无数字假设）
+
+文档：README 增加「Jellyfin 音源」章节 + fork 出处与 MIT 归属（上游
+ZHANGTIANYAO1/teamspeak-music-bot）。
+
+## 阶段与验证
+
+1. 类型 + 配置 → `npx tsc --noEmit`
+2. JellyfinProvider + 单测 → tsc + vitest
+3. 门控 + bot 穿线 → tsc + vitest
+4. REST → tsc + vitest
+5. WebUI → `cd web && npm run build`
+6. README + 全量构建/测试

docs/superpowers/specs/2026-04-12-bot-profile-design.md

@@ -0,0 +1,124 @@
+# Bot Profile Manager — Design Spec
+
+## Goal
+
+When the bot plays a song, automatically update its TeamSpeak presence (avatar, description, nickname, away status, channel description) and send a "now playing" chat message. When playback stops, restore all values to defaults. Each feature is independently configurable and permission-safe — if the bot lacks a required server permission, that feature silently disables itself until the next reconnect.
+
+## Features
+
+| # | Feature | Update on song | Restore on stop | TS3 mechanism | TS6 mechanism |
+|---|---------|---------------|-----------------|---------------|---------------|
+| 1 | Avatar | Album cover art | Delete avatar | File transfer upload + `clientupdate client_flag_avatar=<md5>` | Same (file transfer is protocol-level) |
+| 2 | Description | `歌名 - 歌手 [专辑]` | Clear (empty string) | `clientupdate client_description=...` | `httpQuery.clientUpdate(...)` |
+| 3 | Nickname | `♪ 歌名 - 歌手 \| 原昵称` (max 30 chars) | Restore `defaultNickname` | `clientupdate client_nickname=...` | `httpQuery.clientUpdate(...)` |
+| 4 | Away status | `client_away=1`, message = `正在播放: 歌名 - 歌手` | `client_away=0` | `clientupdate client_away=...` | `httpQuery.clientUpdate(...)` |
+| 5 | Channel description | `正在播放: 歌名 - 歌手\n专辑: xxx\n平台: xxx` | Clear | `channeledit cid=... channel_description=...` | `httpQuery.request("POST", "/1/channeledit", ...)` |
+| 6 | Now-playing message | `♪ 正在播放: 歌名 - 歌手 [专辑]` | (not sent on stop) | `sendTextMessage` (existing) | `sendTextMessage` (existing) |
+
+## Architecture
+
+```
+resolveAndPlay() success / stop / clear / playNext exhausted
+    ↓
+BotInstance → BotProfileManager.onSongChange(song | null)
+                 ├─ updateAvatar(coverUrl | null)       [fire-and-forget]
+                 ├─ updateDescription(song | null)
+                 ├─ updateNickname(song | null)
+                 ├─ updateAwayStatus(song | null)
+                 ├─ updateChannelDescription(song | null)
+                 └─ sendNowPlayingMessage(song)          [only when song != null]
+
+BotInstance.connect()  → profileManager.onConnect()   // reset perm flags, restore defaults
+BotInstance.disconnect() → (no action needed, server cleans up)
+```
+
+## File Changes
+
+| File | Change |
+|------|--------|
+| `src/bot/profile.ts` | **New** — `BotProfileManager` class |
+| `src/ts-protocol/client.ts` | Add `execCommand`, `execCommandWithResponse`, file transfer methods, `escapeTS3()` |
+| `src/bot/instance.ts` | Create & hold `BotProfileManager`, call at lifecycle points |
+| `src/data/database.ts` | Add 6 profile config columns via ALTER TABLE migration |
+| `src/web/api/player.ts` | Add `GET/PUT /api/player/:botId/profile` endpoints |
+
+## TS3Client Layer Extensions
+
+New methods on `TS3Client` (all delegate to underlying `@honeybbq/teamspeak-client` Client):
+
+```typescript
+execCommand(cmd: string): Promise<void>
+execCommandWithResponse(cmd: string): Promise<Record<string, string>[]>
+fileTransferInitUpload(channelID: bigint, path: string, password: string,
+                       size: bigint, overwrite?: boolean): Promise<FileUploadInfo>
+uploadFileData(host: string, info: FileUploadInfo, data: Readable): Promise<void>
+fileTransferDeleteFile(channelID: bigint, paths: string[]): Promise<void>
+```
+
+Utility: `escapeTS3(str: string): string` — escapes spaces (`\s`), backslashes (`\\`), pipes (`\p`), slashes (`\/`).
+
+## BotProfileManager Detail
+
+```typescript
+interface ProfileConfig {
+  avatarEnabled: boolean;        // default true
+  descriptionEnabled: boolean;   // default true
+  nicknameEnabled: boolean;      // default true
+  awayStatusEnabled: boolean;    // default true
+  channelDescEnabled: boolean;   // default true
+  nowPlayingMsgEnabled: boolean; // default true
+}
+```
+
+### Permission Handling
+
+- Each feature has an independent `permDenied: boolean` flag.
+- On first failure where error message contains "permission" or "insufficient" → set flag, skip subsequent calls.
+- On `onConnect()` → reset all flags (new connection may have different permissions).
+- Non-permission errors (network timeout, etc.) do NOT set the flag — next song change will retry.
+
+### Nickname Truncation
+
+- Format: `♪ {songInfo} | {defaultNickname}`
+- TS3 max nickname: 30 characters
+- If total > 30: truncate songInfo, keep defaultNickname
+- If `♪  | {defaultNickname}` alone > 30: skip nickname update entirely
+
+### Avatar Upload Flow (TS3)
+
+1. Download cover image via axios (HTTP GET coverUrl) → Buffer
+2. `fileTransferInitUpload(0n, "/avatar", "", BigInt(buffer.length), true)`
+3. `uploadFileData(host, info, Readable.from(buffer))`
+4. Compute MD5: `crypto.createHash('md5').update(buffer).digest('hex')`
+5. `execCommand("clientupdate client_flag_avatar=" + md5)`
+
+To clear: `fileTransferDeleteFile(0n, ["/avatar"])` + `execCommand("clientupdate client_flag_avatar=")`
+
+### Fire-and-Forget
+
+Avatar download/upload is slow. `onSongChange()` launches all updates concurrently via `Promise.allSettled()` — failures are logged but never block playback.
+
+## Database Migration
+
+```sql
+ALTER TABLE bot_instances ADD COLUMN profile_avatar_enabled INTEGER DEFAULT 1;
+ALTER TABLE bot_instances ADD COLUMN profile_description_enabled INTEGER DEFAULT 1;
+ALTER TABLE bot_instances ADD COLUMN profile_nickname_enabled INTEGER DEFAULT 1;
+ALTER TABLE bot_instances ADD COLUMN profile_away_enabled INTEGER DEFAULT 1;
+ALTER TABLE bot_instances ADD COLUMN profile_channel_desc_enabled INTEGER DEFAULT 1;
+ALTER TABLE bot_instances ADD COLUMN profile_now_playing_enabled INTEGER DEFAULT 1;
+```
+
+## Web API
+
+```
+GET  /api/player/:botId/profile  → { avatarEnabled, descriptionEnabled, ... }
+PUT  /api/player/:botId/profile  → body: Partial<ProfileConfig> → 200 OK
+```
+
+## Constraints
+
+- All profile operations are async, never block playback
+- Uses existing `axios` dependency for image download
+- MD5 via Node.js built-in `crypto`
+- No new npm dependencies required

docs/superpowers/specs/2026-04-27-fm-artist-playlist-design.md

@@ -0,0 +1,125 @@
+# Design: FM Bug Fix + Artist Loop + Playlist Fuzzy Search
+
+Date: 2026-04-27
+
+## Overview
+
+Three features for the TeamSpeak Music Bot:
+1. New `!artist <name>` command — loop playback filtered by artist
+2. Fuzzy playlist name search in existing `!playlist` command
+3. Fix `!fm` audio dropout bug (no sound after a few songs but status shows playing)
+
+---
+
+## Feature 1: `!artist` Command
+
+### Behavior
+
+`!artist <歌手名> [-q|-b|-y]` searches for songs by the artist, loads them into the queue, sets the queue mode to `Loop`, and starts playing.
+
+### Flow
+
+1. Parse command with optional platform flags (`-q`, `-b`, `-y`)
+2. Call `provider.search(歌手名, 50)` to get up to 50 results
+3. Filter results: only keep songs where `song.artist` contains the search query (case-insensitive)
+4. If filtered list is empty, fall back to unfiltered search results (up to 20)
+5. Clear current queue, add filtered songs, set mode to `Loop`
+6. Play first song via `resolveAndPlay`
+
+### Key Decisions
+
+- **Why Loop mode?** The user said "循环播放" (loop playback). After the artist's songs are exhausted, they should restart.
+- **Why filter client-side?** The search API doesn't support artist-only filtering. We search broadly then narrow down.
+- **Why 50 results?** The default limit is 20, but for prolific artists we want more coverage. 50 balances API response size with coverage.
+
+### Files Changed
+
+- `src/bot/commands.ts`: Register `artist` in PUBLIC_COMMANDS, update help text
+- `src/bot/instance.ts`: New `cmdArtist()` method
+
+---
+
+## Feature 2: Playlist Fuzzy Search
+
+### Behavior
+
+`!playlist <name or ID>` now accepts both playlist IDs and playlist names. When the input is not a pure numeric ID, it searches for matching playlists and uses the top result.
+
+### Flow
+
+1. Parse input — if it's a pure numeric ID or contains a URL with an ID, use existing logic
+2. Otherwise, call `provider.search(input)` which already returns `playlists[]` in the result
+3. Also call `provider.getUserPlaylists()` if the provider supports it (logged-in state)
+4. Client-side fuzzy match user playlists: `playlist.name` contains input (case-insensitive)
+5. Merge results: public search results first (sorted by API relevance), then user matches
+6. Take the first playlist, load its songs, play
+
+### Key Decisions
+
+- **Why public search first?** It's already sorted by relevance from the API. User playlists are a secondary source.
+- **Why client-side matching for user playlists?** The `getUserPlaylists()` API returns all user playlists without a search parameter, so we must filter locally.
+- **Backward compatibility:** Numeric IDs and URL parsing are unchanged.
+
+### Files Changed
+
+- `src/bot/instance.ts`: Modify `cmdPlaylist()` to add search fallback
+- `src/bot/commands.ts`: Update help text
+
+---
+
+## Feature 3: FM Bug Fix
+
+### Root Cause Analysis
+
+The `!fm` bug manifests as: audio stops after a few songs, but `!now` shows a playing song and the song name keeps changing.
+
+`getPersonalFm()` returns only ~3 songs per API call. After those are consumed:
+- In `Sequential` mode: `queue.next()` returns null → `player.stop()` is called → playback stops entirely. This does NOT match "歌还在轮播" (songs still rotating).
+- In `Loop` mode (if user changed mode): the same 3 songs loop, but URLs may expire, causing silent playback failures.
+
+The most likely scenario for "no audio but status shows playing + song names changing":
+1. FM songs have URLs that resolve but don't produce playable audio (copyright/region restrictions)
+2. ffmpeg spawns, connects to the URL, gets an HTTP error or silent stream
+3. ffmpeg exits quickly (clean exit or error)
+4. The frame loop detects ffmpeg gone + buffer empty → emits `trackEnd`
+5. `playNext()` advances to the next song
+6. This rapid cycle (spawn → fail → advance) makes it appear that songs are "playing and rotating" but with no audio
+7. After 3 consecutive ffmpeg spawn failures, `consecutiveFailures >= MAX_CONSECUTIVE_FAILURES` → player refuses to spawn new ffmpeg processes
+8. After that, `resolveAndPlay` still sets state via `player.play()` which immediately emits "error" → `playNext()` skips to next → cycle continues with no ffmpeg at all
+
+### Fix Strategy
+
+**Fix 1 — FM auto-refill (primary fix):**
+- In `cmdFm()`, set queue mode to `RandomLoop` so the queue never "runs out"
+- Add a `refillFm()` method that fetches more FM songs and appends to queue
+- Hook into the `trackEnd` flow: when queue has ≤ 2 songs remaining and we're in FM mode, trigger a refill
+- Track FM state with a boolean flag `isFmMode` on the instance
+
+**Fix 2 — Reset consecutive failures on successful playback (safety net):**
+- Reset `consecutiveFailures` when a track plays successfully for at least N frames (e.g., 50 frames = 1 second)
+- This prevents transient URL failures from accumulating toward the hard limit
+
+**Fix 3 — FM refill before queue exhaustion:**
+- After `playNext()` successfully starts a song, check if `isFmMode` and `queue.size() - currentIndex <= 2`
+- If so, fire an async refill (don't block playback)
+
+### Files Changed
+
+- `src/bot/instance.ts`: Modify `cmdFm()`, add `refillFm()`, add FM state tracking, modify `playNext()` to check for FM refill
+- `src/audio/player.ts`: Add `framesPlayed` threshold check to reset `consecutiveFailures`
+
+---
+
+## Implementation Order
+
+1. **FM bug fix** first — it's a bug fix affecting current users
+2. **Playlist fuzzy search** — small change, quick win
+3. **Artist loop** — new feature, depends on queue/player being stable
+
+---
+
+## Testing
+
+- FM: Verify songs keep playing beyond the initial 3-song batch, verify auto-refill works
+- Playlist: Test with numeric ID (backward compat), test with playlist name (fuzzy search)
+- Artist: Test with known artist names, test edge case (no results), test with platform flags

docs/superpowers/specs/2026-05-06-music-source-tabs-design.md

@@ -0,0 +1,189 @@
+# Multi-Source Tabs for Recommend / User Playlists / Daily Songs
+
+**Date:** 2026-05-06
+**Status:** Spec — pending implementation
+
+## Problem
+
+Home 和 Library 页面的"推荐歌单 / 每日推荐 / 我的歌单"这三类内容当前硬编码只走网易云。当用户同时登录了网易云和 QQ 音乐时，无法在 Web UI 上看到 QQ 侧的对应内容、也无法切换查看。
+
+## Goal
+
+在以下 4 个 section 上提供"网易云 / QQ"来源切换 tab，桌面端和移动端均可用：
+
+- `Home.vue` — 推荐歌单
+- `Home.vue` — 每日推荐
+- `Home.vue` — 我的歌单
+- `Library.vue` — 我的歌单
+
+切换为纯前端动作（数据已预先 fetch），无加载闪烁。各 section 的选择独立持久化。
+
+## Out of Scope
+
+- 私人 FM（QQ 无对应概念）
+- B 站热门（独立第三来源，不属于网易/QQ 切换语义）
+- 最近播放（bot 维度的播放历史，与音乐源无关）
+- Library 现有的"我的收藏"段落 —— 当前调用的 `/api/music/user/liked` 端点不存在，是死代码，本次顺手移除
+- 登录状态实时同步（用户在 Settings 登录后需手动刷新 Home/Library 才能看到 QQ tab）
+- Tab 排序、隐藏、拖动等高级配置
+
+## Non-functional Constraints
+
+- 桌面端（>768px）和移动端（≤768px）布局均可用，tab 与 section title 同行排布；空间不足时允许 flex-wrap
+- Tab 触控区域有效高度 ≥36px
+- 现有 5 分钟 home data cache 行为保留
+- 不引入新的后端端点（后端已通过 `?platform=` 参数支持多源）
+
+## Architecture
+
+### 数据层（`web/src/stores/player.ts`）
+
+字段从单平台改为按 platform 切分：
+
+```ts
+// 前
+recommendPlaylists: PlaylistItem[]
+userPlaylists:      PlaylistItem[]
+dailySongs:         Song[]
+
+// 后
+recommendPlaylists: { netease: PlaylistItem[]; qq: PlaylistItem[] }
+userPlaylists:      { netease: PlaylistItem[]; qq: PlaylistItem[] }
+dailySongs:         { netease: Song[];         qq: Song[] }
+
+// 新增
+authStatus: { netease: boolean; qq: boolean }
+```
+
+`fetchHomeData()` 改写：
+
+1. 并发调用 `/api/auth/status?platform=netease` 与 `?platform=qq`，写入 `authStatus`
+2. 网易云的三类数据照常 fetch（推荐歌单匿名可访问；每日推荐和我的歌单需登录，未登录时 API 自然返回空或失败，`Promise.allSettled` 已隔离）
+3. QQ 的三类数据**仅在 QQ 登录时** fetch，未登录则为空数组
+4. B 站热门保持原样
+5. 5 分钟缓存 TTL 不变
+
+### UI 组件
+
+新增 `web/src/components/SourceTabs.vue`：
+
+```vue
+<SourceTabs v-model="activeSource" :sources="availableSources" />
+```
+
+Props：
+- `sources: ('netease' | 'qq')[]` — 由父组件根据 auth 状态过滤后传入
+- `modelValue: 'netease' | 'qq'` — v-model 绑定
+
+行为：
+- `sources.length < 2` 时组件**自身不渲染**（返回空），父组件无需 v-if 包装
+- 文字标签：`{ netease: '网易云', qq: 'QQ' }`
+- 视觉：水平排列，激活态用主色（`var(--color-primary)`）下划线 + 加粗，未激活态使用次要文字色
+- 紧贴 section-title 右侧，使用 `display: inline-flex`，移动端 padding/font-size 缩小
+
+### 各 section 接入模板
+
+```vue
+<section v-if="recommendAvailable.length > 0" class="section">
+  <h2 class="section-title">
+    推荐歌单
+    <SourceTabs v-model="recommendSource" :sources="recommendAvailable" />
+  </h2>
+  <div class="playlist-grid">
+    <RouterLink
+      v-for="pl in store.recommendPlaylists[recommendSource]"
+      :key="pl.id"
+      :to="`/playlist/${pl.id}?platform=${pl.platform}`"
+      class="playlist-card hover-scale"
+    >
+      <CoverArt :url="pl.coverUrl" :size="160" :radius="10" :show-shadow="true" />
+      <div class="playlist-name">{{ pl.name }}</div>
+    </RouterLink>
+  </div>
+</section>
+```
+
+每个 section 在 `<script setup>` 维护两个值：
+
+- `recommendSource: Ref<'netease' | 'qq'>` — 当前选中
+- `recommendAvailable: ComputedRef<('netease' | 'qq')[]>` — 该 section 在当前登录状态下有哪些 source 可选
+
+`recommendAvailable` 计算规则：
+
+| Section | netease 加入条件 | qq 加入条件 |
+|---|---|---|
+| Home 推荐歌单 | 总是（公开数据） | `authStatus.qq` |
+| Home 每日推荐 | `authStatus.netease` | `authStatus.qq` |
+| Home 我的歌单 | `authStatus.netease` | `authStatus.qq` |
+| Library 我的歌单 | `authStatus.netease` | `authStatus.qq` |
+
+#### "我的歌单"展开按钮兼容
+
+Home 的"我的歌单"现有 `USER_PLAYLIST_LIMIT = 20` 折叠/展开。改造后：
+
+```ts
+const visibleUserPlaylists = computed(() => {
+  const all = store.userPlaylists[userSource.value] ?? [];
+  return userPlaylistsExpanded.value ? all : all.slice(0, USER_PLAYLIST_LIMIT);
+});
+```
+
+切换 source 时折叠态保留（不需 reset）。
+
+### 持久化
+
+localStorage 键统一为一个 JSON：
+
+```
+key:   "source-tabs"
+value: {
+  "home.recommend": "qq",
+  "home.daily":     "netease",
+  "home.user":      "qq",
+  "library.user":   "netease"
+}
+```
+
+读：组件 mount 时一次性读 + 解析。
+写：在 v-model 的 setter 里 `watch` 一次写回。
+不存在的键 / 解析失败 / 老用户没这个 key —— 默认值 `"netease"`。
+
+### 边界与回退
+
+| 情况 | 行为 |
+|---|---|
+| 选的 source 不在 `available` 里（例：选了 QQ，登出后回到页面） | 渲染时 fallback 到 `available[0]`，不修改 localStorage（保留用户偏好，下次登回来仍生效） |
+| `recommendPlaylists.qq` 为空数组（API 失败 or 无数据） | tab 仍可切，切过去显示空 grid（无错误提示，符合现有"空数据隐藏 section"语义；section 顶层 v-if 检查的是 `available.length > 0`，单 platform 数据为空不影响 section 显隐） |
+| QQ provider 不支持 `getDailyRecommendSongs`（501） | `Promise.allSettled` 已捕获，`dailySongs.qq` 保持 `[]`，等同上一行 |
+| 用户在 Settings 登录 QQ 后切回 Home | 不自动 refetch / 不自动出 tab —— 用户需手动刷新页面（保留 5 分钟缓存语义） |
+| 网易云和 QQ 都没登录 | `available` 为空时 section 隐藏（沿用现有逻辑） |
+| Library "我的收藏" 段落 | 整段移除（含 template、script 中的 `liked` ref、对应 axios 调用） |
+
+## 修改文件清单
+
+新增：
+- `web/src/components/SourceTabs.vue` — 共享 tab 组件
+
+修改：
+- `web/src/stores/player.ts` — 多平台 state、`authStatus`、`fetchHomeData` 重写
+- `web/src/views/Home.vue` — 三个 section 接入 SourceTabs，对应 ref + computed
+- `web/src/views/Library.vue` — 我的歌单接入 SourceTabs；移除我的收藏死代码
+
+不改：
+- 后端（API 已支持 `?platform=`）
+- `Search.vue` / `Playlist.vue` / `Settings.vue` 等其他页面
+
+## 测试方案
+
+- 手动：在两种登录组合下访问 Home 和 Library，验证 tab 显隐、切换、刷新后持久化
+  - 仅网易登录 → 不显示 tab
+  - 两边登录 → 显示 tab，切换后刷新页面来源不变
+  - QQ 登录 → 网易登出 → 网易 tab 消失，若上次选的是网易则 fallback 到 QQ
+- 移动端（DevTools 768px 以下）：tab 与 section-title 同行不溢出，触控区域可点
+- TypeScript 类型检查通过：`npx tsc --noEmit` + `npm run build:web`
+- 单元测试：现有 vitest 套件不应回归（store 改动不破坏其他用法）
+
+## 风险
+
+- store 字段类型变更（数组 → 对象）会影响所有读取这三个字段的地方。需 grep 确认没有遗漏的消费者。
+- localStorage 解析失败的容错必须周全，避免一次脏数据导致整个页面白屏。

docs/superpowers/specs/2026-05-06-prev-history-and-play-next-design.md

@@ -0,0 +1,226 @@
+# History-aware `prev` + "Play Next" Insert
+
+**Date:** 2026-05-06
+**Status:** Spec — pending implementation
+
+## Problem
+
+Two queue/playback gaps surfaced in real use:
+
+1. In `PlayMode.Random` and `PlayMode.RandomLoop`, `!prev` does not play the
+   actually-previously-played song. It just walks `currentIndex - 1` in the
+   underlying array — but in random modes `currentIndex` jumps non-sequentially,
+   so the "previous" array slot has no relationship to play history.
+
+2. `!add` / web "添加到队列" appends to the queue tail. There is no way to
+   say "play this song right after the current one." Users want a "下一首
+   播放" affordance comparable to Spotify "Add to Queue (next up)" or Apple
+   Music "Play Next".
+
+## Goals
+
+- `prev` walks back through the actual play history regardless of mode.
+- A new "Play Next" path inserts a song at `currentIndex + 1`, available
+  via web UI button and TS3 chat command.
+- Both features are usable on desktop and mobile web.
+
+## Out of Scope
+
+- Forward/redo through prev'd songs (user would need to push next manually,
+  which picks a fresh random in random modes — acceptable simplification).
+- Reordering songs already in the queue ("move to next" inside Queue.vue).
+- Persisting play history across bot restarts (in-memory only).
+
+## Non-functional Constraints
+
+- History capped at 50 entries to bound memory.
+- `addNext` must keep `playedIndices` and `history` index references valid
+  after insertion (shift all indices > current by +1).
+- New Toast UX from the previous round still applies (failures surface).
+- TypeScript and existing test suite must not regress.
+
+## Architecture
+
+### A. History-aware `prev`
+
+**`src/audio/queue.ts`** — `PlayQueue` gains a back-stack:
+
+```ts
+private history: number[] = [];
+private static readonly HISTORY_LIMIT = 50;
+
+private pushHistory(idx: number): void {
+  if (idx < 0) return;
+  this.history.push(idx);
+  if (this.history.length > PlayQueue.HISTORY_LIMIT) {
+    this.history.shift();
+  }
+}
+```
+
+Mutators call `pushHistory(this.currentIndex)` **before** changing `currentIndex`:
+
+| Method | History action |
+|---|---|
+| `play()` | `this.history = []` (fresh playback) |
+| `playAt(idx)` | `pushHistory(currentIndex)`, then set `currentIndex = idx` |
+| `next()` | `pushHistory(currentIndex)`, then advance per mode |
+| `prev()` | **Pop** from history → `currentIndex = popped`. If empty, fall back to existing `currentIndex - 1` (which keeps Sequential's wrap behavior; Random returns null). `prev` itself does NOT push to history. |
+| `clear()` | `this.history = []` |
+| `setMode(m)` | `this.history = []` (mode change resets context) |
+| `remove(idx)` | Drop matching entries from history; shift any entry `> idx` by `-1`. Same logic as the existing `playedIndices` rebuild. |
+
+**`prev()` rewrite:**
+
+```ts
+prev(): QueuedSong | null {
+  if (this.songs.length === 0) return null;
+  // History-driven path (preferred when we have one)
+  while (this.history.length > 0) {
+    const idx = this.history.pop()!;
+    if (idx >= 0 && idx < this.songs.length) {
+      this.currentIndex = idx;
+      this.playedIndices.add(idx);
+      return this.songs[idx];
+    }
+    // popped index is stale (song removed) — keep popping
+  }
+  // Fallback: old index-based prev
+  const prevIndex = this.currentIndex - 1;
+  if (prevIndex < 0) {
+    if (this.mode === PlayMode.Sequential) return null;
+    this.currentIndex = this.songs.length - 1;
+  } else {
+    this.currentIndex = prevIndex;
+  }
+  this.playedIndices.add(this.currentIndex);
+  return this.songs[this.currentIndex];
+}
+```
+
+### B. Play Next (insert after current)
+
+**`PlayQueue.addNext(song)`:**
+
+```ts
+addNext(song: QueuedSong): void {
+  if (this.currentIndex < 0 || this.songs.length === 0) {
+    this.songs.push(song);
+    return;
+  }
+  const insertAt = this.currentIndex + 1;
+  this.songs.splice(insertAt, 0, song);
+  // Shift any tracked index > currentIndex by +1
+  const shifted = new Set<number>();
+  for (const i of this.playedIndices) {
+    shifted.add(i > this.currentIndex ? i + 1 : i);
+  }
+  this.playedIndices = shifted;
+  this.history = this.history.map((i) => (i > this.currentIndex ? i + 1 : i));
+}
+```
+
+**Backend endpoint** — `src/web/api/player.ts`:
+
+```
+POST /api/player/:botId/play-next-song
+body: { song: Song }
+```
+
+Behavior:
+- If queue is empty or `currentIndex < 0`: `queue.addNext(song)` (which falls
+  through to plain push), then `queue.play()`, then `resolveAndPlay`. Same
+  semantics as a successful `/play-song` — message: "正在播放：…"
+- Otherwise: `queue.addNext(song)`, no resolveAndPlay. Message: "已加入下一首：…"
+- Returns `{ ok: boolean, message: string }` matching the convention
+  established in the previous round.
+
+**Bot command** — `src/bot/instance.ts`:
+
+Register `!playnext <query>` (alias `!pn`):
+- Mirror of `cmdPlay`'s search step
+- On match: `queue.addNext(song)`. If no current playback, fall through to
+  `resolveAndPlay`.
+- Reply with `已加入下一首：<name>` or `正在播放：<name>` accordingly
+
+**Frontend store action** — `web/src/stores/player.ts`:
+
+```ts
+async playNextSong(song: Song) {
+  if (!this.activeBotId) return;
+  const res = await axios.post(`/api/player/${this.activeBotId}/play-next-song`, { song });
+  if (res.data?.message) {
+    this.notify(res.data.message, res.data.ok === false ? 'error' : 'info');
+  }
+}
+```
+
+**Frontend SongCard** — `web/src/components/SongCard.vue`:
+
+Add a third action button between the existing "play" and "add to queue":
+
+```vue
+<button class="action-btn" @click.stop="$emit('playNext')" title="下一首播放">
+  <Icon icon="mdi:playlist-play" />
+</button>
+```
+
+Add `playNext: []` to `defineEmits`.
+
+**Caller updates** — `Home.vue`, `Library.vue`, `Search.vue`, `History.vue`,
+`Playlist.vue`: each `<SongCard>` usage adds
+`@playNext="store.playNextSong(song)"`.
+
+**Queue.vue** is intentionally **not** updated — clicking "play next" on a
+song already in the queue would create a confusing duplicate.
+
+## Edge Cases
+
+| Case | Behavior |
+|---|---|
+| `prev` with empty history in Sequential mode | Walks `currentIndex - 1`; returns null at index 0 (existing) |
+| `prev` with empty history in Random/RandomLoop | Returns null (no past to recover) |
+| Repeated `prev` past start of history | Pops what's there, then falls back to index walk; eventually null |
+| `addNext` while `currentIndex == -1` (nothing played yet) | Falls through to push; queue.play() will pick it as first |
+| `addNext` while playing and queue size = 1 | Inserts at index 1; current index unchanged; next() will advance to it |
+| `remove` removes a song whose index is in history | Entry dropped; shifted accordingly |
+| Mode switched mid-playback | History cleared (intentional — mode change is a context boundary) |
+| `addNext` then `prev` | Inserted song was never played → not in history; prev pops the previously-played song, NOT the just-inserted one |
+
+## Files Touched
+
+- `src/audio/queue.ts` — history field, `pushHistory`, `addNext`, rewritten `prev`, mutator updates
+- `src/audio/queue.test.ts` (or add if missing) — unit tests for history behavior + addNext shift logic
+- `src/bot/instance.ts` — register `!playnext` / `!pn` command handler
+- `src/web/api/player.ts` — new `/play-next-song` route
+- `web/src/stores/player.ts` — `playNextSong` action
+- `web/src/components/SongCard.vue` — third action button + emit
+- `web/src/views/Home.vue` — wire `@playNext`
+- `web/src/views/Library.vue` — wire `@playNext`
+- `web/src/views/Search.vue` — wire `@playNext`
+- `web/src/views/History.vue` — wire `@playNext`
+- `web/src/views/Playlist.vue` — wire `@playNext`
+
+## Test Plan
+
+**Unit (vitest, `queue.test.ts`):**
+- prev with empty history in Sequential: walks back, null at index 0
+- prev with empty history in Random: returns null
+- next → next → next → prev pops correctly; prev again pops earlier
+- prev after `clear()` returns null (history reset)
+- prev after `setMode()` returns null (history reset)
+- `remove(idx)` drops from history and shifts entries > idx
+- `addNext` while empty: appends
+- `addNext` while playing index 2 in a 5-song queue: ends up at index 3, currentIndex still 2, queue size 6
+- `addNext` then `next()`: plays the inserted song
+- `addNext` shifts existing playedIndices and history correctly
+
+**Integration (manual smoke):**
+- Random mode: play 4 songs, hit `prev` 3 times → walks back through history
+- Click "下一首播放" on a search result → next song after current is the chosen one
+- `!playnext 七里香` → bot replies "已加入下一首：..."; current keeps playing; next song is 七里香
+- `!playnext` while idle → starts playing immediately
+
+**Regression:**
+- Existing 161 source-tree tests still pass.
+- TypeScript `tsc --noEmit` and `npm run build:web` clean.

docs/superpowers/specs/2026-05-07-custom-avatar-and-album-search-design.md

@@ -0,0 +1,149 @@
+# 自定义机器人头像 + 专辑搜索/播放
+
+**Date:** 2026-05-07
+**Status:** Spec — pending implementation
+**Issue:** [#51](https://github.com/ZHANGTIANYAO1/teamspeak-music-bot/issues/51)
+
+## Problem
+
+Issue #51 的两个独立但同源的反馈：
+
+1. **机器人头像无法固定** — 当前 `ProfileConfig.avatarEnabled` 控制是否同步专辑封面，但没有任何"上传一张固定头像"的入口。多 bot 房间里用户依赖头像辨识具体 bot，封面跟着歌变会让识别成本变高。
+2. **网页端搜索不能播放整张专辑** — `SearchResult.albums` 类型字段存在但所有 provider 都返回 `[]`，搜索 API `/search/all` 只聚合 `songs`；Search.vue 里也只渲染 SongCard。Netease 后端 `getAlbumSongs` 已实现，唯独缺把搜索/UI 连起来。
+
+两件事独立，分两个 PR；本 spec 同时覆盖两块以保持 #51 的单一 issue 关系。
+
+## Goal
+
+### 自定义头像
+
+- "创建新实例"弹窗里有一个"自定义头像"上传/预览控件（PNG/JPG/WebP，≤200 KB，与 TS3 头像上限一致）
+- Settings 已有的"同步头像"那行下面增加同等的"自定义头像"卡片，可以在已存在的 bot 上随时改/删
+- 行为矩阵：
+
+  | `avatarEnabled` | 有自定义 | 播放时 | 停播时 |
+  |---|---|---|---|
+  | true  | 是 | 跟当前歌曲封面 | **回到自定义** |
+  | true  | 否 | 跟当前歌曲封面 | 清空（保持现状） |
+  | false | 是 | 一直显示自定义 | 一直显示自定义 |
+  | false | 否 | 不主动改 | 不主动改 |
+
+### 专辑搜索
+
+- 搜索结果里能看到"专辑"分区（先支持 Netease + QQ，bilibili/youtube 仍返回 `[]`）
+- 点专辑卡片进入详情页 → 看到曲目列表 + 顶部"播放全部 / 加入队列"
+
+## Out of Scope
+
+- 头像格式自动转换（用户传 GIF/BMP 不接受，前端校验拒掉）
+- 头像服务端自动 resize（本期保持"上传时校验大小"，后期可加 sharp/jimp 但不在本期）
+- 专辑搜索的多平台聚合排序（按 `netease → qq` 简单拼接，与现有 `songs` 聚合一致）
+- 专辑详情页的"喜欢/收藏"按钮（playlist 详情页本身也没有）
+- 专辑作为推荐位（Home 不出现"推荐专辑"这一栏）
+- bilibili / youtube 的专辑概念（这两个平台无对应 API）
+
+## Architecture
+
+### 自定义头像
+
+#### 存储
+
+- 文件落地 `data/avatars/<botId>.<ext>`（仿 `data/cookies/<platform>.json`，Docker volume 友好）
+- DB schema：`bot_instances` 表新增 `custom_avatar_path` TEXT NULL（存相对路径，如 `avatars/<botId>.png`），通过 `migrateSchema()` 迁移
+- 加载时机：`BotProfileManager` 构造时把文件读到内存 `Buffer`，避免每次 stop 都读盘
+
+#### 后端 API
+
+新增 `src/web/api/bot.ts` 里（如不存在则在 `instance.ts` 同源处）：
+
+- `POST /api/bot/:id/avatar` (multipart) — 校验大小 ≤200 KB、MIME ∈ {png,jpeg,webp}；写盘 + 更新 DB；广播给运行中实例（重新加载 buffer + 立即 `applyIdleAvatar()`）
+- `DELETE /api/bot/:id/avatar` — 删盘 + 清 DB；运行中实例切回原 clear 语义
+- `GET /api/bot/:id/avatar` — 直接 `res.sendFile`（带强 ETag）供前端预览
+
+#### `BotProfileManager` 改动
+
+新增字段 + 方法：
+
+```ts
+private customAvatar: Buffer | null = null;
+
+setCustomAvatar(buf: Buffer | null): void;
+private async applyIdleAvatar(gen: number): Promise<void>;  // 上传 customAvatar
+```
+
+修改：
+
+- `clearAvatar(gen)` → `if (this.customAvatar) { applyIdleAvatar(gen) } else { 当前逻辑 }`
+- `onConnect()` 新增：`if (!avatarEnabled && customAvatar) applyIdleAvatar(gen)`
+- `setCustomAvatar(buf)`：更新内存 buffer，并触发 `applyIdleAvatar` 一次（仅当当前应该显示 idle avatar 时，即没在播放或 avatarEnabled=false）
+
+#### 前端
+
+新组件 `web/src/components/AvatarUpload.vue`：
+
+- props: `botId?` (上传时空表示走临时 base64 缓存)、`v-model:value`
+- 拖拽 / 文件选择 / 预览圆框 / 删除按钮
+- 内部 `axios.post('/api/bot/<id>/avatar', formData)` 或在创建表单里把 base64 与表单一同提交
+
+接入点：
+
+- 创建实例弹窗（搜索 `BotEditor.vue` 或类似）—— 表单提交后用返回的 botId 再 POST 头像；或者表单本身保存 base64 等创建完成后由后端解码落盘
+- Settings.vue：在 features 列表中插入一行"自定义头像"，右侧渲染 `<AvatarUpload :bot-id="botId" />`
+
+### 专辑搜索 / 详情
+
+#### 后端
+
+`src/music/netease.ts` `search()`：
+
+- 多发一个 `cloudsearch?type=10` 请求，把返回的 `result.albums[]` 映射成 `Album[]` 填进 `SearchResult.albums`
+- 字段 `id` / `name` / `coverUrl` (`picUrl`) / `artist` (`artists[].name.join(' / ')`)
+
+`src/music/qq.ts` `search()`：
+
+- 在现有 `req_0` 旁增加 `req_album: { module: "music.search.SearchCgiService", method: "DoSearchForQQMusicDesktop", param: { searchid, query, search_type: 8 } }`，映射 `body.album.list[]`
+
+`src/web/api/music.ts` `/search/all`：
+
+- 在响应里增加 `albums` 和 `playlists`，与 `songs` 一同合并
+
+`/album/:id` 已存在，无需改动。
+
+#### 前端
+
+- `web/src/views/Search.vue`：响应 schema 升级为 `{songs, albums, playlists}`；模板加入两个新分区（"专辑"、"歌单"），各自一个简单的卡片网格（参考 Home.vue 的 `playlist-grid`）
+- 新路由 `/album/:id` → 复用 `Playlist.vue`，把它的 `loadPlaylist()` 重构为根据 `route.path` 决定调 `/playlist/:id` 还是 `/album/:id`，或者新建 `Album.vue` 内部 import 同一个 `<PlaylistDetail />` 子组件
+  - **方案选择**：拆出 `<PlaylistDetail :endpoint="...">` 组件 + `Album.vue` / `Playlist.vue` 两个薄壳。当前 `Playlist.vue` 内部仅 ~60 行模板，单文件改造比新建 PlaylistDetail 子组件更小，先用最小改动：在 `Playlist.vue` 内根据 `route.meta.kind === 'album'` 切换 endpoint
+- 路由：`router/index.ts` 加 `{ path: '/album/:id', component: Playlist, meta: { kind: 'album' } }`
+
+### 拆分
+
+**两个 PR：**
+
+1. `feat(profile): custom bot avatar with idle/playback precedence`
+   - DB migration + ProfileManager 改动 + 上传 API + AvatarUpload.vue + 接入两个表单
+2. `feat(search): album section in search results + album detail playback`
+   - netease/qq search 扩展 + /search/all + Search.vue 分区 + Playlist.vue 复用为 album
+
+## Testing
+
+### 自定义头像
+
+- 单元：DB 迁移加 `custom_avatar_path` 列幂等；上传 API 校验大小/MIME；ProfileManager.applyIdleAvatar 在 onSongChange(null) 后被调用
+- 集成：mock TS3Client 验证 fileTransferInitUpload 收到的 buffer 是 customAvatar
+- 手动：本地起 bot 上传一张 png → 检查头像；播一首歌 → 头像切封面；停止 → 头像回到 png；关掉 avatarEnabled 重启 → 头像直接是 png
+
+### 专辑搜索
+
+- 单元：netease/qq `search()` 测试：响应包含 albums 字段，长度 > 0 (mock fixture 必须含 album 段)
+- 集成：`/search/all` 响应 schema 包含 `albums`/`playlists`
+- 手动：搜"周杰伦" → 看到歌曲 + 专辑 + 歌单三个分区；点专辑 → 详情页 → 播放全部 → 队列加上整张专辑
+
+## Migration
+
+DB 迁移：`bot_instances.custom_avatar_path` TEXT NULL，默认 NULL。已存在 bot 不受影响。
+
+## Open Questions
+
+- TS6 协议路径下 `fileTransferInitUpload` 是否一致？（既有 avatar 流程已经覆盖 TS3 + TS6，本期沿用同一路径，不单独验证）
+- 头像超过 200 KB 时前端用 Canvas 自动 resize 还是直接拒？— **决定：拒，错误提示"请压缩到 200KB 以内"**，简单可控

docs/superpowers/specs/2026-05-27-webui-authentication-design.md

@@ -0,0 +1,360 @@
+# WebUI Authentication
+
+**Date:** 2026-05-27
+**Status:** Spec — pending implementation
+**Branch:** `feat/webui-auth`
+
+## Problem
+
+WebUI 的所有后端端点和 WebSocket 当前没有任何鉴权：
+
+- `src/web/server.ts` 注册的 `/api/bot`、`/api/player`、`/api/music`、`/api/auth`、`/api/config/public-url`、`/api/health`、`/ws` 均无中间件拦截。
+- 静态前端通过 `express.static()` 直接对外提供。
+
+后果：任何能访问 WebUI 端口（默认 `3000`）的人都能控制 bot、修改配置、操控播放，并触发对网易云 / QQ / Bilibili 的登录二维码流程。一旦 WebUI 端口暴露公网（无论是直接绑定 `0.0.0.0`、还是经 nginx 反代），即被任意访客接管。
+
+## Goal
+
+为 WebUI 增加用户名 + 密码登录，覆盖所有 HTTP `/api/*` 端点（除显式公共白名单）以及 `/ws` WebSocket，使未登录访客无法调用任何敏感接口或观察 bot 状态。
+
+## Out of Scope（明确不做）
+
+- 登录失败的限流 / 锁定（无 brute-force 防御；可放在反代层；后续 PR 单独做）
+- 角色与权限（admin / viewer）—— 全员同权
+- 密码重置流程（不挂邮件；仅提供登录后 `change-password`）
+- 双因素认证（2FA）
+- "记住我" / 绝对过期 vs 滑动过期的可配置
+- 旧版"无鉴权"兼容开关（`requireAuth=false`）—— 合入后所有部署强制启用鉴权
+- 现有 `config.adminPassword` 字段的迁移 —— 保留为未使用字段，避免破坏旧 `config.json`
+
+## Non-functional Constraints
+
+- 不引入需要原生编译的依赖（Windows 用户多，build tools 不稳定）。密码哈希用纯 JS 的 `bcryptjs`。
+- Cookie 行为必须兼容现有 `trustProxy` 反代部署。
+- 升级路径：旧用户首次启动新版本 → 自动进入 `/setup` 创建首位 admin；期间所有 `/api/*` 仍拒绝访问。期间不存在"裸奔窗口"。
+- 后续维护者要能在不阅读 `requireAuth` 内部细节的情况下，把新路由挂到 `/api/*` 下并自动获得鉴权。
+
+## Architecture
+
+### 数据层（`src/data/`）
+
+扩展 `src/data/database.ts` 的 schema-migration 块，新增两张表：
+
+```sql
+CREATE TABLE IF NOT EXISTS users (
+  id           TEXT PRIMARY KEY,                 -- uuid v4
+  username     TEXT NOT NULL UNIQUE COLLATE NOCASE,
+  passwordHash TEXT NOT NULL,                    -- bcryptjs, 12 rounds
+  createdAt    INTEGER NOT NULL,
+  updatedAt    INTEGER NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS sessions (
+  id          TEXT PRIMARY KEY,                  -- sha256(rawToken) hex
+  userId      TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+  createdAt   INTEGER NOT NULL,
+  expiresAt   INTEGER NOT NULL,                  -- ms epoch
+  lastSeenAt  INTEGER NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_sessions_userId    ON sessions(userId);
+CREATE INDEX IF NOT EXISTS idx_sessions_expiresAt ON sessions(expiresAt);
+```
+
+**为什么 `sessions.id` 存 sha256(token) 而不是 token 本身：** 若 SQLite 文件被泄露（备份、误传、磁盘扫描），原始 token 会让攻击者直接冒充任意已登录用户。存 hash 后只能爆破。代价仅是每次请求一次 sha256。
+
+新模块：
+
+`src/data/users.ts`
+- `createUser(username, password): User` — 在事务里 INSERT；遇到 UNIQUE 冲突抛出 `UsernameTakenError`
+- `findByUsername(username): User | null`
+- `verifyPassword(plain, hash): Promise<boolean>` — bcryptjs compare
+- `countUsers(): number` — 用于 `/needs-setup`
+- `changePassword(userId, newPassword): void`
+
+`src/data/sessions.ts`
+- `createSession(userId): { token: string; expiresAt: number }` — 生成 32 字节随机 token（`crypto.randomBytes(32).toString('base64url')`），存 sha256
+- `validateAndTouch(rawToken): { userId, username } | null` — 单次 SQL JOIN：查 session + user；过期 → 返回 null + 删除该行；否则若 `now - lastSeenAt > 1h` 则 UPDATE 滑动续期到 `now + 7d`
+- `deleteSession(rawToken): void` — 退出
+- `deleteAllForUser(userId, exceptToken?): void` — change-password 时调用，可保留当前会话
+- `cleanupExpired(): void` — 定时任务
+
+### HTTP 层（`src/web/`）
+
+#### 新增中间件
+
+`src/web/middleware/requireAuth.ts`
+```
+读取 req.cookies.tsmb_session
+  → 缺失 → 401 { error: "unauthenticated" }
+  → 调 sessions.validateAndTouch
+  → null → 清 cookie + 401
+  → 有效 → req.user = { id, username }; next()
+```
+
+`src/web/middleware/csrf.ts`
+```
+若 method ∈ {GET, HEAD, OPTIONS} → next()
+否则要求 req.headers.origin || req.headers.referer 的 host 与 req.get('host') 一致
+  → 不一致或两者都缺失 → 403 { error: "bad origin" }
+```
+
+#### 新路由：`src/web/api/session.ts`
+
+挂在 `/api/session`，全部公共（不挂 requireAuth）：
+
+| Method | Path | 行为 |
+|---|---|---|
+| GET | `/needs-setup` | `{ needsSetup: users.countUsers() === 0 }` |
+| POST | `/setup` | Body `{ username, password }`。在事务内再次检查 `countUsers() === 0`：是则 INSERT user + 立刻 createSession + Set-Cookie + 200 `{ id, username }`；否则 409 `{ error: "already initialized" }` |
+| POST | `/login` | Body `{ username, password }`。匹配则 createSession + Set-Cookie + 200；不匹配则等待 250ms 后 401 `{ error: "invalid credentials" }`（常量时间延迟，降低用户名枚举风险） |
+| POST | `/logout` | 删 session，清 cookie，204 |
+| GET | `/me` | 走 requireAuth；返回 `{ id, username }` |
+| POST | `/change-password` | 走 requireAuth；Body `{ oldPassword, newPassword }`；通过则 changePassword + deleteAllForUser(except 当前) + 204 |
+
+> `/me` 与 `/change-password` 例外地需要 requireAuth —— 在路由内单独挂中间件，避免污染 `/api/session/*` 的公共属性。
+
+#### Cookie 规范
+
+- 名称：`tsmb_session`
+- 值：32 字节 random → base64url
+- 属性：`HttpOnly; SameSite=Lax; Path=/; Max-Age=604800`（7 天）
+- `Secure` 标志：当 `req.secure === true`（依赖 `trustProxy` + `X-Forwarded-Proto`）；本地 HTTP 调试时不加，避免 cookie 被丢弃
+
+#### 装配顺序（`src/web/server.ts`）
+
+```ts
+app.use(express.json({ limit: "400kb" }));
+app.use(cookieParser());                              // 新增
+
+// 公共
+app.get("/api/health", …);
+app.get("/api/config/public-url", …);
+app.use("/api/session", createSessionRouter(...));
+
+// 闸门（仅作用于下方注册的 /api/* 路由）
+app.use("/api", csrfOriginCheck);
+app.use("/api", requireAuth);
+
+// 受保护
+app.use("/api/bot",    createBotRouter(...));
+app.use("/api/music",  createMusicRouter(...));
+app.use("/api/player", createPlayerRouter(...));
+app.use("/api/auth",   createAuthRouter(...));        // 音乐平台 QR
+
+// 静态 SPA（公共，前端自行判定登录态后跳转）
+app.use(express.static(staticDir));
+app.get(/^(?!\/api|\/ws)/, sendIndex);
+```
+
+> Express 的 `app.use` 仅对匹配前缀生效。公共路由先注册即可命中；之后的 `app.use("/api", …)` 闸门只在公共路由未匹配时执行，因此 `/api/health`、`/api/config/public-url`、`/api/session/*` 不会被闸门拦截。
+
+#### 定时清理
+
+`server.start()` 内启动 `setInterval(cleanupExpired, 60 * 60 * 1000)`，`server.stop()` 内 `clearInterval`。
+
+### WebSocket 层（`src/web/websocket.ts` + `src/web/server.ts`）
+
+改造为手动 upgrade：
+
+```ts
+const wss = new WebSocketServer({ noServer: true });
+
+server.on("upgrade", (req, socket, head) => {
+  if (req.url !== "/ws") { socket.destroy(); return; }
+  const session = validateCookieFromHeaders(req.headers.cookie);
+  if (!session) {
+    socket.write("HTTP/1.1 401 Unauthorized\r\nConnection: close\r\n\r\n");
+    socket.destroy();
+    return;
+  }
+  wss.handleUpgrade(req, socket, head, (ws) => {
+    (ws as any).userId = session.userId;
+    wss.emit("connection", ws, req);
+  });
+});
+```
+
+`validateCookieFromHeaders` 在 `src/web/auth/validateSession.ts` 提供，HTTP 中间件与 WS upgrade 共用同一实现，确保不会出现"HTTP 拒、WS 放行"或反之的偏差。
+
+不需要在 upgrade 上单独做 CSRF：浏览器在跨站 WebSocket 请求里仍会带 Origin 头，可在 validate 之外顺手比对 `req.headers.origin` host 与 `req.headers.host` 一致；不一致直接拒绝。
+
+### 前端层（`web/`）
+
+#### 新视图
+
+- `web/src/views/Login.vue` — 用户名 + 密码表单 → POST `/api/session/login` → 成功跳 `next` 或 `/`
+- `web/src/views/FirstRunSetup.vue` — 同样表单 + 二次确认密码 → POST `/api/session/setup` → 成功后自动登录并跳 `/`
+  - 名称避免与既有 `Setup.vue`（bot 创建向导）冲突
+
+#### Session 状态
+
+新增 `web/src/composables/useSession.ts`：暴露 `currentUser: Ref<User|null>`、`refresh()`、`logout()`、`needsSetup: Ref<boolean>`。在 `App.vue` mount 时调用 `refresh()`。
+
+#### 路由守卫（`web/src/router/index.ts`）
+
+- 公共路由：`/login`、`/setup`
+- 全局 `beforeEach`：
+  1. 先 `GET /api/session/needs-setup`（仅在 `needsSetup` 未知时拉一次并缓存）
+  2. `needsSetup === true` 且目标不是 `/setup` → `redirect('/setup')`
+  3. 否则 `GET /api/session/me`，401 且目标非公共路由 → `redirect('/login?next=<path>')`
+
+#### API 客户端
+
+- 所有 `fetch` 改为 `credentials: 'same-origin'`（若现有有 wrapper 则改一处；否则按文件逐个改 —— 实施时由 plan 列出）
+- 包一层 401 拦截器：任意受保护请求返回 401 → 清 `currentUser` → `router.push('/login')`
+
+#### UI
+
+- 顶栏新增已登录用户名 + "退出"按钮（POST `/logout` → `router.push('/login')`）
+- 修改密码入口暂放在已有的"设置"页签内（若无则新增极简 section）
+
+### 依赖
+
+新增到 `package.json`：
+
+```
+"bcryptjs": "^2.4.3",
+"cookie-parser": "^1.4.6",
+"@types/bcryptjs": "^2.4.6",
+"@types/cookie-parser": "^1.4.7"
+```
+
+不引入 `express-session`、`jsonwebtoken`、`passport` 等更大栈。
+
+## Data Flow
+
+### 首次启动
+
+```
+Browser → GET /         → static SPA
+SPA mounted → GET /api/session/needs-setup → { needsSetup: true }
+SPA → router.replace('/setup')
+User submits form → POST /api/session/setup
+Server (TX): countUsers() === 0 → INSERT user → createSession → Set-Cookie → 200
+SPA → currentUser refresh → router.replace('/')
+```
+
+### 已部署用户升级
+
+旧 `config.adminPassword` 字段保留不动；首次启动新版本仍会因 `users` 表为空而进入 setup 流程 —— 旧字段不被采纳，避免歧义。
+
+### 后续登录
+
+```
+SPA → GET /api/session/me → 401
+SPA → router.replace('/login?next=/queue')
+User submits → POST /api/session/login → Set-Cookie + 200
+SPA → currentUser refresh → router.replace('/queue')
+```
+
+### 受保护请求
+
+```
+SPA → fetch('/api/bot', { credentials: 'same-origin' })
+Server requireAuth: validateAndTouch(cookie)
+  → ok → req.user 注入 → 业务路由处理
+  → 不 ok → 401 → SPA 拦截器跳 /login
+```
+
+### WebSocket
+
+```
+SPA → new WebSocket(`${wsScheme}://${host}/ws`)   // 浏览器自动带 cookie
+Server upgrade handler: validateCookieFromHeaders
+  → ok → handleUpgrade → connection event
+  → 不 ok → HTTP 401 写回原始 socket → destroy
+```
+
+## Error Handling
+
+| 场景 | HTTP 响应 | 备注 |
+|---|---|---|
+| 未带 cookie | 401 `{ error: "unauthenticated" }` | requireAuth |
+| Cookie 解析失败 / token 不存在 | 401 + `Set-Cookie tsmb_session=; Max-Age=0` 清掉 | 自愈 |
+| Session 过期 | 同上 + DELETE 该行 | validateAndTouch 内部完成 |
+| 用户名/密码不匹配 | 401 `{ error: "invalid credentials" }` + 250ms 延迟 | 不区分"用户不存在"和"密码错"两类 |
+| `setup` 时已存在用户 | 409 `{ error: "already initialized" }` | 防止重复初始化 |
+| `setup` 用户名重复 | 在 `/setup` 流程中不可能（只允许 0 → 1） |  |
+| `change-password` 旧密码错 | 401 `{ error: "invalid credentials" }` |  |
+| CSRF Origin 不匹配 | 403 `{ error: "bad origin" }` |  |
+| WS 无 cookie / 校验失败 | 写回 HTTP/1.1 401 并 destroy socket | 在握手前拒绝，避免 onopen 假成功 |
+
+所有错误响应统一 `{ error: string }` 形式，匹配现有 API 风格。
+
+## Testing Strategy
+
+### 单元（vitest）
+
+`src/data/users.test.ts`
+- createUser 成功后 findByUsername 命中（大小写不敏感）
+- 重复 username 抛 UsernameTakenError
+- verifyPassword 正反例
+- changePassword 之后旧哈希不再验证通过
+
+`src/data/sessions.test.ts`
+- createSession 返回的 token 不是 DB 内 id（DB 内是 sha256(token)）
+- validateAndTouch 过期记录返回 null 且记录被删
+- validateAndTouch 未过 1h 不写 DB；过 1h 后写 DB（用 `Date.now` mock 验证）
+- deleteAllForUser(exceptToken) 保留指定会话
+
+### 集成（vitest + supertest，真 SQLite in-memory）
+
+`src/web/api/session.test.ts`
+- empty DB → /needs-setup 返回 true；/setup 成功；/needs-setup 再调返回 false；二次 /setup 返回 409
+- /login 成功后受保护路由 (`GET /api/bot`) 200；不带 cookie 401
+- /logout 之后同一 cookie 调受保护路由 401
+- /change-password 后 a) 旧密码 /login 失败 b) 新密码 /login 成功 c) 之前签发的其他 cookie 失效，当前 cookie 仍可用
+
+`src/web/middleware/csrf.test.ts`
+- 带匹配 Origin 的 POST 通过
+- Origin 与 host 不匹配 → 403
+- 同样规则适用 Referer
+- GET 永远通过
+
+`src/web/websocket.test.ts`（新增或扩展）
+- 无 cookie 的 ws 握手 → 收到 HTTP 401，socket 关闭
+- 带有效 cookie → 握手成功，收到 init 消息
+- Session 删除后已建立的 ws **不会**被主动断（明确记录此妥协 —— 见 Trade-offs）
+
+### 前端
+
+不在本 PR 引入新的 e2e 框架。手动用例（在 PR 描述里列）：
+- 全新数据库启动 → 自动跳 /setup → 创建账户 → 进入主界面
+- 退出 → 自动跳 /login
+- 关闭浏览器 7 天内再开 → 仍登录
+- 登录态下后端重启清空 sessions → 任意 API 调用 → 自动跳 /login
+
+## Files Changed
+
+```
+src/data/database.ts                       (schema migration)
+src/data/users.ts                          (new)
+src/data/users.test.ts                     (new)
+src/data/sessions.ts                       (new)
+src/data/sessions.test.ts                  (new)
+src/web/auth/validateSession.ts            (new, shared by HTTP + WS)
+src/web/middleware/requireAuth.ts          (new)
+src/web/middleware/csrf.ts                 (new)
+src/web/middleware/csrf.test.ts            (new)
+src/web/api/session.ts                     (new)
+src/web/api/session.test.ts                (new)
+src/web/server.ts                          (cookieParser + 公共白名单 + 闸门 + cleanup interval + WS upgrade 重构调用)
+src/web/websocket.ts                       (移除被动 path 绑定；改为 handleUpgrade 模式)
+src/web/websocket.test.ts                  (新增 / 扩展)
+package.json                               (deps)
+
+web/src/views/Login.vue                    (new)
+web/src/views/FirstRunSetup.vue            (new)
+web/src/composables/useSession.ts          (new)
+web/src/router/index.ts                    (公共路由 + beforeEach 守卫)
+web/src/api/*.ts                           (credentials: 'same-origin' + 401 拦截)
+web/src/App.vue                            (顶栏 logout + 当前用户名)
+```
+
+## Trade-offs / 已知妥协
+
+1. **会话失效不主动断 WS** —— 后台 deleteSession 后，已有 WS 仍在跑（直到客户端断或服务端进程重启）。原因：WS 长连接没有"每条消息再次鉴权"的廉价手段；为此引入会浪费时间。影响面有限：WS 只推状态、不接收 mutating 命令；所有写操作仍走 HTTP。
+2. **无登录限流** —— 见 Out of Scope。若部署面向公网，建议在反代层加 limit（如 nginx `limit_req`）。
+3. **`config.adminPassword` 留作未使用字段** —— 不迁移、不读取。后续 PR 可移除并加 schema migration。当前保留是为避免破坏旧 `config.json` 解析。
+4. **单一管理员模型** —— 多用户表已存在，但 UI 当前不暴露增删用户。下一个 PR 再加用户管理界面。
+5. **Origin/Referer CSRF 检查** —— 不是 token，但配合 `SameSite=Lax` 已能挡掉常规 CSRF 攻击。代价：会拒绝缺 Origin/Referer 的非浏览器客户端 POST 请求（如裸 curl）—— 这是预期行为。

docs/superpowers/specs/2026-05-30-account-permissions-design.md

@@ -0,0 +1,167 @@
+# Fine-grained account permissions — design
+
+**Issue:** [#79](https://github.com/ZHANGTIANYAO1/teamspeak-music-bot/issues/79) (item E — the maintainer's permission-management idea)
+**Date:** 2026-05-30
+**Status:** Approved (brainstorm), pending implementation plan
+
+## Scope
+
+Issue #79 bundles five things. This spec covers **only item E**: allow an admin to
+grant each non-admin (member) account a set of capabilities and a list of bots they
+may control. The other items are handled in separate PRs and are **out of scope**
+here:
+
+- #1 Guest mode (login-less playback)
+- #2 Dedicated-link hides other bots (subsumed conceptually by E's bot allow-list, but the link-specific UX is separate)
+- #3 Auto-pause when channel empty
+- #4 Dedicated link loses bot binding on refresh (a bug)
+
+## Problem
+
+Today the bot has a coarse two-role system: `admin | member` (single `role` column,
+read live per request). `requireAdmin` gates only `/api/users` and `/api/audit`.
+**Every other action — create/edit/delete bots, start/stop, all playback & queue
+control, set platform login cookies, set audio quality — is open to any logged-in
+member, on every bot.** Admins want to delegate limited control to members without
+handing them full power.
+
+## Decisions (from brainstorm)
+
+1. **Model = capability flags + per-member bot allow-list** (not a per-bot×per-action
+   matrix, not role templates).
+2. **Defaults:** on upgrade, existing members are backfilled with full capabilities +
+   all bots (no behavior change); newly-created members get a **basic tier**.
+3. **Bot allow-list semantics:** an explicit "all bots" toggle OR a specific list;
+   empty list = no bots controllable. Members **cannot see** bots outside their
+   allow-list (hidden, not merely disabled).
+4. **Capability set (5 toggles)** — see below; basic tier = playback + queue + all bots.
+5. **Admin is a super-user** (bypasses all checks). The last admin cannot be demoted
+   (existing invariant preserved). Permission grants/revokes are written to the
+   existing audit log.
+
+## Capability taxonomy
+
+| Capability token | Covers | Scope |
+|---|---|---|
+| `player.control` | play/pause/resume/next/prev/stop/seek/volume/mode | per-bot (allow-list) |
+| `player.queue` | search-add / clear / remove / play-at / playlist / album / play-song | per-bot (allow-list) |
+| `bot.manage` | create / edit / delete / start / stop / avatar / profile / idle settings | global (create) + per-bot (operate a specific bot) |
+| `platform.auth` | set NetEase/QQ/Bilibili cookie, QR, SMS | **global** (shared credentials) |
+| `quality` | set audio quality per platform | **global** |
+
+Bot scope is independent of capabilities: a member with `player.control` can only
+exercise it on bots in their allow-list (or all, if the "all bots" flag is set).
+`platform.auth` and `quality` are global capabilities with no bot scope.
+
+**Basic tier** (new members): `{ player.control, player.queue }` + `bots.all = true`.
+A new member can play/queue on every bot but cannot manage bots, change credentials,
+or change quality.
+
+## Data model (SQLite, additive — follows existing `CREATE TABLE IF NOT EXISTS` pattern)
+
+```sql
+-- capability tokens + the "all bots" flag (stored as token 'bots.all')
+CREATE TABLE IF NOT EXISTS user_permissions (
+  userId     TEXT NOT NULL,
+  permission TEXT NOT NULL,
+  PRIMARY KEY (userId, permission),
+  FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- specific bot allow-list (only consulted when 'bots.all' is NOT present)
+CREATE TABLE IF NOT EXISTS user_bot_access (
+  userId TEXT NOT NULL,
+  botId  TEXT NOT NULL,
+  PRIMARY KEY (userId, botId),
+  FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+);
+CREATE INDEX IF NOT EXISTS idx_user_bot_access_userId ON user_bot_access(userId);
+```
+
+- Admins have no rows (they bypass). Only members are constrained.
+- `bots.all` present ⇒ all bots (incl. future ones). Absent ⇒ only `user_bot_access`
+  rows; empty ⇒ none.
+- `foreign_keys = ON` and WAL are already enabled; cascade-on-user-delete works.
+- `user_bot_access.botId` references bot instance ids; when a bot is deleted, its
+  access rows should be cleaned up (either an FK to the bot table if one exists, or an
+  explicit cleanup in `BotManager.removeBot` / `PermissionStore.pruneBot(botId)`).
+
+New `PermissionStore` in `src/data/permissions.ts` (mirrors `createUserStore` /
+`createSessionStore`: prepared statements + an interface). Methods:
+`getCapabilities(userId)`, `getBotAccess(userId)` → `'all' | string[]`,
+`setPermissions(userId, { capabilities, bots })`, `pruneBot(botId)`.
+
+## Backend enforcement (real 403 — not just hidden UI)
+
+- **`req.user` widened** to carry `capabilities: Set<string>` and bot access. Loaded in
+  `requireAuth` (one extra lookup, or a JOIN in the session query). The same
+  `{id,username,role,capabilities,bots}` shape must be kept in sync in the three places
+  it is built today: `requireAuth.ts`, `session.ts` `requireAuthInline`, and the WS
+  upgrade handler in `server.ts` (WS only needs it if a push action becomes gated).
+  Because it's read live, permission changes take effect immediately (no re-login).
+- **`requirePermission(cap)`** middleware (new, mirrors `requireAdmin.ts`): 401 if no
+  user; allow if `role === 'admin'` or `capabilities.has(cap)`; else 403.
+- **`requireBotAccess`** helper: allow if admin or `bots.all` or botId ∈ access list;
+  else 403. Mounted on the player router's existing `/:botId` choke-point
+  (`src/web/api/player.ts`) and on each `:id` route in `src/web/api/bot.ts`
+  (start/stop/edit/delete/avatar/profile).
+- **Route → capability mapping:**
+  - `/api/player/:botId/*` playback actions → `player.control` (+ `requireBotAccess`)
+  - `/api/player/:botId/*` queue actions → `player.queue` (+ `requireBotAccess`)
+  - `/api/bot` create, `/api/bot/:id` edit/delete, `/api/bot/:id/start|stop|avatar|profile`, `/api/bot/settings` → `bot.manage` (+ `requireBotAccess` for the `:id` ones)
+  - `/api/auth/*` (cookie/QR/SMS) → `platform.auth`
+  - `/api/music/quality` POST → `quality`
+- **`GET /api/bot`** filters its result to the caller's allowed bots for members
+  (admins see all). This is what "hides" disallowed bots in the UI.
+
+## Management API (admin-only, added to the existing users router)
+
+- `GET /api/users/:id/permissions` → `{ capabilities: string[], bots: 'all' | string[] }`
+- `PUT /api/users/:id/permissions` → body `{ capabilities, bots }`; validates tokens
+  against the known set and botIds against existing bots; writes audit
+  `user.permissions_changed`.
+- `GET /api/session/me` is extended to include the **current** user's
+  `{ capabilities, bots }` so the frontend can gate UI. (admins report effectively-all.)
+
+## Frontend
+
+- `useSession` extends `User` with `capabilities` + bot scope and exposes
+  `can(cap)` and `canControlBot(botId)` helpers.
+- **Navbar bot selector** filters `store.bots` to controllable bots (others hidden);
+  `activeBot` fallback and `fetchBots` default only ever land on an allowed bot.
+- **Player / Settings** hide controls and whole sections a member lacks: platform
+  login, audio quality, and bot create/edit/delete are hidden without the matching
+  capability; playback/queue buttons hidden without `player.control` / `player.queue`.
+- **Admin permission editor:** in the Settings → User Management list, each member row
+  gets a "权限" editor — capability checkboxes + a bot allow-list with an "全部机器人"
+  toggle. Saving calls `PUT /api/users/:id/permissions`.
+
+## Defaults & migration
+
+- New tables created idempotently in `initTables`.
+- **One-time backfill** (guarded so it runs once): every existing `member` gets all
+  five capabilities + `bots.all`. Admins are skipped (they bypass). This preserves
+  current behavior for existing members on upgrade.
+- **New member default** (`POST /api/users` with role member): capabilities
+  `{ player.control, player.queue }` + `bots.all` (basic tier).
+- Pre-existing accounts default to `role = 'admin'` per the current schema — those are
+  super-users and unaffected.
+
+## Testing (TDD)
+
+- `PermissionStore` unit tests (set/get capabilities + bot access; `'all'` vs list vs
+  empty; `pruneBot`).
+- `requirePermission` / `requireBotAccess` middleware tests (admin bypass; has/lacks
+  cap → 200/403; bot in/out of allow-list; `bots.all`).
+- API tests: member without cap → 403; with cap → 200; bot not allowed → 403/hidden;
+  `GET /api/bot` filtered for members, full for admin; `PUT .../permissions` validates
+  + audits.
+- Migration test: existing members backfilled to full + `bots.all`; new member gets
+  basic tier.
+
+## Non-goals
+
+- No per-bot×per-capability matrix, no custom role templates (YAGNI).
+- Guest mode, dedicated-link UX, auto-pause, and the refresh bug (#1–#4) are separate.
+- No change to the admin/member role concept itself; this layers capabilities under
+  the existing `member` role.

docs/superpowers/specs/2026-05-30-autopause-empty-channel-design.md

@@ -0,0 +1,138 @@
+# Auto-pause on empty channel — design
+
+**Issue:** [#79](https://github.com/ZHANGTIANYAO1/teamspeak-music-bot/issues/79) item 3
+**Date:** 2026-05-30
+**Status:** Approved (brainstorm), pending implementation plan
+
+## Problem
+
+When everyone leaves the bot's voice channel, music keeps playing to an empty room.
+The maintainer wants an option to **auto-pause when the channel is empty** (no disconnect)
+and resume when someone returns.
+
+## Decisions (from brainstorm)
+
+- **Global toggle**, reusing the **already-declared but currently dead** `config.autoPauseOnEmpty`
+  (`src/data/config.ts`, default `true`). No per-bot granularity (YAGNI).
+- **Event-driven, near-instant** reaction (not the 30s poll alone) — subscribe to TS client
+  enter/leave/move events; keep the existing 30s idle poll as a fallback.
+- **Auto-resume only what we auto-paused** — a user-paused track is never auto-resumed.
+- Independent of the existing **idle-disconnect** (`idleTimeoutMinutes`): both share the same
+  emptiness signal but act independently (pause immediately; disconnect after N minutes).
+
+## Current state (verified)
+
+- `client.ts` `getClientsInChannel()` returns all clients in the bot's channel *including the
+  bot*; callers compute "others" as `length - 1`. No persistent roster.
+- The library emits `clientEnter` / `clientLeave` / `clientMoved`; `client.ts` currently only
+  *logs* `clientEnter` and does not re-emit leave/moved.
+- The idle poller in `instance.ts` (`_startIdlePoller`, every 30s) already computes
+  `userCount = getClientsInChannel().length - 1` and, when `<= 0`, schedules an
+  idle-disconnect after `idleTimeoutMinutes`.
+- `player.pause()` / `player.resume()` already pause/resume **without disconnecting** (ffmpeg
+  stays alive, no voice sent). The player only knows `idle|playing|paused` — there is **no**
+  auto-vs-user-pause distinction today.
+- `BotConfig.autoPauseOnEmpty` exists (default true) but is **read nowhere**.
+
+## Design
+
+### Occupancy signal (shared)
+Extract the idle poller's count into one method on `BotInstance`:
+`checkChannelOccupancy()` → queries `getClientsInChannel()`, computes `userCount = length - 1`,
+and drives **both** the existing idle-disconnect timer (unchanged behavior) **and** the new
+auto-pause logic below. It is called by:
+1. the existing 30s poll (fallback), and
+2. new TS event handlers.
+
+### Event subscription
+`client.ts`: subscribe to and **re-emit** `clientEnter`, `clientLeave`, `clientMoved` up to
+`BotInstance`. `BotInstance.setupTsEvents()` calls `checkChannelOccupancy()` on each (a re-query
+is simplest, since `clientLeave` carries no channel id). This gives near-instant pause/resume;
+the poll remains as a safety net.
+
+### Auto-pause logic (inside `checkChannelOccupancy`)
+Add a private `autoPaused = false` flag to `BotInstance`.
+- **Empty** (`userCount <= 0`): if `config.autoPauseOnEmpty` **and** `player.getState() === "playing"`
+  → `player.pause()`, `autoPaused = true`, emit `stateChange`. (Idle-disconnect timer still
+  scheduled as today.)
+- **Re-populated** (`userCount > 0`): if `autoPaused` **and** `player.getState() === "paused"`
+  → `player.resume()`, `autoPaused = false`, emit `stateChange`. (Idle timer cancelled as today.)
+
+### `autoPaused` bookkeeping (so user pauses are respected)
+Clear `autoPaused = false` in `cmdPause`, `cmdResume`, `cmdStop`, `cmdPlay`, and on
+connect/disconnect (the `disconnected` handler calls `player.stop()` → idle). Net effect: only a
+track *we* auto-paused gets auto-resumed; a user-paused track stays paused when someone returns.
+
+### Config wiring
+- `GET /api/bot/settings`: include `autoPauseOnEmpty` in the payload (alongside `idleTimeoutMinutes`).
+- `POST /api/bot/settings`: accept + validate a boolean `autoPauseOnEmpty`, `saveConfig`, and
+  propagate to live bots via a new `BotInstance.updateAutoPause(enabled)` (mirrors
+  `updateIdleTimeout`). Since the instance reads `this.config.autoPauseOnEmpty` live, propagation
+  can be as simple as updating the stored config reference / a field the check reads.
+- Frontend `Settings.vue` → the **行为设置** section (already `bot.manage`-gated): add a toggle
+  for `autoPauseOnEmpty` next to the idle-timeout control; load it in the settings fetch and send
+  it on save.
+
+## Components / files
+
+- `src/ts-protocol/client.ts` — subscribe + re-emit `clientEnter`/`clientLeave`/`clientMoved`.
+- `src/bot/instance.ts` — `autoPaused` field; `checkChannelOccupancy()` (refactored from the
+  idle poller, drives idle + auto-pause); event handlers; clear `autoPaused` in user commands +
+  connect/disconnect; `updateAutoPause(enabled)`.
+- `src/web/api/bot.ts` — `GET`/`POST /settings` handle `autoPauseOnEmpty`.
+- `web/src/views/Settings.vue` (+ player store settings load/save) — the toggle.
+- `src/data/config.ts` — field already exists (no change beyond confirming default).
+
+## Testing
+
+- **Decision unit test (TDD):** extract the pause/resume decision into a testable method, e.g.
+  `applyOccupancy(userCount)` operating on an injected fake player (`getState`/`pause`/`resume`)
+  + the `autoPaused` flag + the config flag. Cases: empty+playing+enabled → pause + `autoPaused`;
+  re-populated+`autoPaused`+paused → resume + clear; re-populated when NOT `autoPaused` (user
+  pause) → no resume; flag disabled → no pause; empty while idle (not playing) → no-op.
+- **API test:** `GET`/`POST /api/bot/settings` round-trips `autoPauseOnEmpty` (validates boolean,
+  persists, propagates).
+- Live TS event wiring is verified by code review + a manual run (can't unit-test a real server).
+
+## Non-goals
+
+- No per-bot toggle (global only). No change to idle-disconnect behavior. No new dependency.
+- Reaction relies on events the bot can already see (same-channel members are always in view);
+  no extra channel subscription needed.
+
+---
+
+## Update (2026-06): occupancy is event-driven & server-wide, not channel-filtered
+
+Live testing against a real TS3 server (with `@honeybbq/teamspeak-client` 0.2.2)
+invalidated two assumptions above. Recording the corrected model here so nobody
+reintroduces the old design:
+
+- **Default is OFF**, not on. See `getDefaultConfig()` in `src/data/config.ts`
+  and the rationale comment there.
+- **Query commands are unusable when others are present.** `clientlist`,
+  `channellist`, and `channelclientlist` ALL time out (~5–10s) whenever ≥2
+  clients are connected to the **server** (verified even when the two clients
+  are in *different* channels). They succeed only when the bot is the sole
+  client on the whole server. So `getClientsInChannel()` returns `[]` exactly
+  when occupancy matters, and `occupancyFromClientList(0)` returns `null`
+  ("unknown") so callers skip the decision rather than mis-reading it as empty.
+- **PAUSE** therefore only ever fires when the bot becomes alone on the server
+  (the one state where the query works). This is reliable and stays on the
+  query path (`refreshOccupancy()` + the 30s idle poller).
+- **RESUME** is armed directly from the `clientEnter` push event
+  (`shouldResumeOnReturn()` + `_resumeIfReturning()` in `instance.ts`), NOT from
+  a query. Because the bot only auto-pauses while alone, the sole way occupancy
+  can return while `autoPaused` is set is a fresh connection — delivered as
+  `clientEnter`. The resume branch never pauses (userCount is always > 0).
+- **Net semantics:** "pause when the server is empty (bot alone), resume when
+  someone connects." Channel granularity is **impossible** with this library:
+  `clientEnter`'s channel field is always `0` (library reads notify param `cid`
+  but enter-view carries `ctid`), and `clientMoved` delivery is flaky. Do NOT
+  attempt to layer `clientMoved.targetChannelID` channel-accuracy on top — it is
+  systematically wrong for direct-connect clients and reintroduces unreliability.
+  The correct path to true channel scoping is an upstream library fix.
+- **Knock-on:** idle-disconnect shares the same signal and is likewise
+  server-wide. UI copy in `web/src/views/Settings.vue` was updated to say
+  "服务器" rather than "频道" to match. `cmdVote` was intentionally left on the
+  query path (out of scope; switching it would inherit the same timeout).

docs/superpowers/specs/2026-05-30-dedicated-link-scope-design.md

@@ -0,0 +1,65 @@
+# Dedicated-link bot scoping (+ refresh fix) — design
+
+**Issue:** [#79](https://github.com/ZHANGTIANYAO1/teamspeak-music-bot/issues/79) items 2 and 4
+**Date:** 2026-05-30
+**Status:** Approved (brainstorm), pending implementation plan
+
+## Problem
+
+- **Item 2:** A dedicated link (`/bot/:id`) is meant to give someone control of *one* bot, but today it just sets the active bot and bounces to `/`; the user can still switch to any other bot from the top-right selector.
+- **Item 4 (bug):** After opening a dedicated link, refreshing the page loses the bot — the UI falls back to the first bot.
+
+Root cause (verified): `BotRedirect.vue` does `router.replace('/')` (dropping the id), and `activeBotId` is in-memory-only Pinia state with no persistence, so a reload resets it to `bots[0]`.
+
+## Decision (from brainstorm: Q2 = URL-carried scope)
+
+Carry the scoped bot in the **URL query** (`?bot=<id>`). One mechanism fixes **both** items: the URL is durable across refresh (item 4) and shareable/self-clearing, and the frontend locks the selector to the scoped bot (item 2). No localStorage sticky-lock; plain `/` (no `?bot`) = full control. Backend per-bot authorization (PR #80) remains the real boundary — this is a UX lock.
+
+## Design
+
+### Scope state (store)
+Add to the player store:
+- `scopedBotId: string | null` — the bot the UI is locked to.
+- getter `isScoped` = `scopedBotId !== null`.
+- action `setScope(id)` / `clearScope()`.
+- `setActiveBotId(id)` becomes a no-op (or ignores) when `isScoped` and `id !== scopedBotId`, so stray switch attempts can't change bots.
+
+### URL as the durable source of truth
+- `BotRedirect.vue` (`/bot/:id`): instead of `router.replace('/')`, validate the bot exists, then `router.replace({ path: '/', query: { bot: id } })`. (Keeps the "clean" home URL but with `?bot=`.)
+- **Router `beforeEach` guard** (the heart of it):
+  - If `to.query.bot` is present → `store.setScope(to.query.bot)` and continue.
+  - Else if `store.isScoped` (a scope is active and this navigation dropped the param) → redirect to the same route **with** `query.bot = store.scopedBotId` re-attached (so the lock survives in-app navigation to /search, /library, etc.).
+  - Else → no scope; continue.
+  This keeps `?bot=` on the URL for every route while scoped, so a refresh on *any* route re-establishes the lock → **fixes item 4**.
+- On app load / after `fetchBots()`: apply `scopedBotId`/`?bot` to `activeBotId`; if the scoped bot doesn't exist or isn't in the user's allowed set, **clear the scope gracefully** (fall back to normal multi-bot view) rather than locking onto a dead id.
+
+### Exit
+- `clearScope()` sets `scopedBotId = null`; the exit affordance navigates to `/` *after* clearing, so the guard won't re-attach `?bot`. This is the only way to leave scoped mode (self-clearing, intentional).
+
+### Navbar (the lock UI)
+- When `isScoped`: the bot selector shows **only** the scoped bot, the dropdown/switching is disabled (no chevron / non-interactive), and other bots' "copy link" affordances are not shown.
+- Show a small "专属模式" indicator with an "退出" control → `clearScope()` + navigate to `/`.
+- When not scoped: unchanged (full selector over `controllableBots`).
+
+### Active-bot coherence
+Because every player action already routes through `activeBotId`, locking `activeBotId === scopedBotId` guarantees all controls affect only the scoped bot. The store's `activeBot` getter `bots[0]` fallback still degrades safely if the scoped id ever fails to match (combined with the graceful-clear above).
+
+## Components / files
+
+- `web/src/stores/player.ts` — `scopedBotId` state, `isScoped`, `setScope`/`clearScope`, guard in `setActiveBotId`, apply scope→active in `fetchBots`/init (graceful clear if missing).
+- `web/src/router/index.ts` — `beforeEach` scope sync + `?bot` preservation.
+- `web/src/views/BotRedirect.vue` — set scope + `replace({ path: '/', query: { bot: id } })`.
+- `web/src/components/Navbar.vue` — locked selector + "专属模式/退出" affordance.
+- `web/src/App.vue` — ensure scope is applied to `activeBotId` after `fetchBots` on load (if not already handled by the store/guard).
+
+## Testing
+
+Vue UI isn't unit-tested in this repo, so verification is `vue-tsc` + manual run. The **store scope logic is testable** if a lightweight test harness exists for Pinia stores; otherwise assert the pure pieces:
+- `setActiveBotId` ignores a switch to a non-scoped bot while scoped; allows the scoped bot.
+- `clearScope` resets state.
+- A small helper for "resolve scope from query + bots list → {scopedBotId, activeBotId} or cleared-if-missing" can be extracted and unit-tested.
+Manual: open `/bot/<id>` → locked to that bot, selector shows only it; refresh → still locked (item 4 fixed); navigate to Search then refresh → still locked; click 退出 → back to all bots; open `/` directly → full control (no lock).
+
+## Non-goals
+
+- No localStorage persistence (URL is the source of truth). No backend change (per-bot auth already exists in #80). No change to how dedicated links are generated (still `<base>/bot/<id>`); only what happens when one is opened.

docs/superpowers/specs/2026-06-24-guest-mode-design.md

@@ -0,0 +1,317 @@
+# Guest mode (login-less WebUI access) — design
+
+**Issue:** [#83](https://github.com/ZHANGTIANYAO1/teamspeak-music-bot/issues/83) — "请求增加 WebUI 鉴权 guest 登录功能"
+**Date:** 2026-06-24
+**Status:** Approved (brainstorm), pending implementation plan
+
+## Scope
+
+Add an optional, **default-OFF** guest mode. When an admin enables it, anyone who can
+reach the WebUI can enter **without logging in** ("以游客身份进入 / Continue as guest")
+and use a restricted subset of playback/queue features. The admin chooses, per
+deployment, exactly what guests may do (a set of toggles) and which bot(s) guests may
+control. Guests can **never** view or change settings, manage bots, set platform
+credentials, change audio quality, or see the user/audit admin panels.
+
+This builds directly on the existing `admin | member` role + capability system
+(`src/data/permissions.ts`, `requirePermission`, `useSession().can()`) and the existing
+append-vs-play-next queue split (`PlayQueue.add` vs `addNext`). It does **not** rebuild
+auth.
+
+The original issue asked specifically that guest song requests go to "下一首" only.
+That exact behavior is reproducible in this design by the admin turning the
+"add to end" toggle **off** and the "play next" toggle **on** — it is one configuration
+of a more general per-ability toggle model (chosen in brainstorm).
+
+## Problem
+
+Today every `/api/*` route past the session router requires a real account
+(`requireAuth`). There is no anonymous/guest path: to let a friend queue a song, an
+admin must create them a `member` account. The maintainer wants a low-friction,
+admin-gated way to let untrusted visitors request music without an account, while
+keeping all administration locked down.
+
+## Decisions (from brainstorm)
+
+1. **Guest = no-login.** A guest is an **anonymous, config-driven synthetic principal**
+   (`role: "guest"`), not a database user with a password. No favorites, no
+   change-password, short-lived session.
+2. **Default OFF**, enforced **server-side** (the guest-session endpoint rejects when
+   the flag is off — never rely on hiding the button).
+3. **Per-ability toggles**, not a single "mode". Every song action and control action is
+   its own admin switch. Default state when guest mode is first enabled: only
+   "add to end of queue" is ON; everything else OFF.
+4. **Per-bot guest scope** (`"all"` or an explicit bot list), mirroring the existing
+   member bot allow-list. Guests cannot see or control out-of-scope bots — including
+   over WebSocket.
+5. **Settings are always hidden AND server-blocked for guests** (view + change), closing
+   the two currently-ungated reads (`GET /api/bot/settings`, `GET /api/music/quality`).
+6. **"Play now" for guests is non-destructive**: insert-next + skip to it, **never** the
+   existing clear-the-whole-queue `/play-song` behavior.
+7. **One unified authorization gate** encapsulates admin/member/guest logic so the
+   existing member/admin capability system is left behavior-unchanged.
+
+## Guest ability model
+
+### Always allowed (baseline read-only — the point of the feature)
+- Browse/search library, playlists, history, song detail, lyrics, cover art.
+- See now-playing and the live queue (REST + WebSocket), **scoped to allowed bots**.
+
+### Always denied (hard locks — not toggles)
+- View **or** change any settings (idle timeout, auto-pause, theme persistence server-side, command prefix, etc.).
+- Bot management (create/edit/delete/start/stop, bot config, avatar, profile).
+- Music-platform login (`/api/auth/*`), audio quality (`/api/music/quality`).
+- User management (`/api/users`), audit log (`/api/audit`), change-password.
+
+### Admin-configurable toggles (`guestMode.permissions.*`, all default `false` except `addToQueue`)
+
+| Flag | 中文 | Default | Backend route(s) gated |
+|---|---|---|---|
+| `addToQueue` | 添加到队列末尾 | **true** | `POST /:botId/add`, `/add-song`, `/add-by-id` |
+| `playNext` | 添加到下一首 | false | `POST /:botId/play-next-song` |
+| `playNow` | 立即播放（不清空队列） | false | new guest-safe play-now (insert-next + skip) |
+| `skip` | 跳过当前歌曲 | false | `POST /:botId/next` |
+| `transport` | 暂停/继续/进度/音量 | false | `POST /:botId/pause`, `/resume`, `/seek`, `/volume` |
+| `removeClear` | 移除/清空队列 | false | `DELETE /:botId/queue/:index`, `POST /:botId/clear` |
+| `playMode` | 切换播放模式 / FM | false | `POST /:botId/mode`, `/fm` |
+
+Notes:
+- Routes with **no** guest flag (e.g. `/prev`, `/stop`, `/play-song`, `/play-playlist`,
+  `/play-album`, `/play-at`, all of `/api/bot/*`, `/api/auth/*`, settings, users, audit)
+  are **never** reachable by guests — the gate denies any guest without an explicit flag.
+  This is the safe default: new routes are guest-denied unless deliberately opted in.
+- `/play-song`, `/play-playlist`, `/play-album` call `queue.clear()` and must stay
+  guest-denied regardless of toggles (they would wipe everyone's queue).
+
+## Config schema (`src/data/config.ts`)
+
+```ts
+export interface GuestPermissions {
+  addToQueue: boolean;   // append to end
+  playNext: boolean;     // 下一首 (insert after current)
+  playNow: boolean;      // 立即播放: insert-next + skip-to-it (non-destructive)
+  skip: boolean;         // skip current track
+  transport: boolean;    // pause/resume/seek/volume
+  removeClear: boolean;  // remove a queue item / clear the queue
+  playMode: boolean;     // play mode (shuffle/repeat) + FM
+}
+
+export interface GuestModeConfig {
+  enabled: boolean;          // master switch, default false
+  bots: "all" | string[];    // per-bot scope (botIds); default "all"
+  permissions: GuestPermissions;
+}
+
+// added to BotConfig:
+guestMode: GuestModeConfig;
+```
+
+`getDefaultConfig()` returns:
+```ts
+guestMode: {
+  enabled: false,
+  bots: "all",
+  permissions: {
+    addToQueue: true, playNext: false, playNow: false,
+    skip: false, transport: false, removeClear: false, playMode: false,
+  },
+}
+```
+
+**Merge hardening:** `loadConfig` currently does a shallow `{...defaults, ...partial}`,
+which would drop `guestMode` sub-keys if a saved config only contains a partial
+`guestMode`. `loadConfig` must **deep-merge `guestMode`** (and its `permissions`) over
+the defaults so missing sub-keys are back-filled. Covered by a `config.test.ts` case.
+
+**Bot deletion:** when a bot is removed, prune its id from `guestMode.bots` (if it's an
+array) and persist — mirrors `PermissionStore.pruneBot(botId)` for members. Done in the
+same `BotManager.removeBot` path that already prunes member access.
+
+## Backend design
+
+### Synthetic guest principal & session entry
+- **Role union widened** to `"admin" | "member" | "guest"` (`UserRole` in
+  `src/data/users.ts`, the `req.user` augmentation in `requireAuth.ts`, the frontend
+  `User` type, and the role badge in Navbar).
+- **Reserved guest user row.** A single fixed row (e.g. id `"__guest__"`, role `"guest"`,
+  an unusable password hash, username e.g. `"guest"`) is created idempotently by
+  migration. It exists only to satisfy the `sessions.userId` FK and the
+  `validateAndTouch` JOIN; it is excluded from user-management listings and the
+  last-admin guards (those count `role = 'admin'` only, so guests don't interfere).
+- **Guest login endpoint:** `POST /api/session/guest`, mounted in the **public** block
+  (before `csrfOriginCheck`/`requireAuth`, like `/login` and `/setup`), rate-limited.
+  - If `config.guestMode.enabled` is false → `403 guest mode disabled`.
+  - Else `sessions.createSession("__guest__")` and set the same `tsmb_session` httpOnly
+    cookie. **Guest sessions use a short TTL** (e.g. `GUEST_SESSION_TTL_MS`, ~24h) and
+    **bypass `MAX_SESSIONS_PER_USER`** for the guest principal (otherwise guest #11
+    would evict guest #1). Expired guest sessions are already deleted on validation; an
+    optional periodic sweep can prune stale ones.
+- **Disable = logout.** In `createRequireAuth`/`validateSession`, if a validated session
+  has `role === "guest"` but `config.guestMode.enabled` is now false, treat it as
+  unauthenticated (401). So flipping guest mode off immediately ends guest access.
+- **Expose availability:** extend `GET /api/session/needs-setup` (or add a sibling
+  `GET /api/session/guest-config`) to return `guestAllowed: boolean` so the **public**
+  Login page can decide whether to show the guest button. This must not leak any other
+  config.
+
+### Permission resolution
+`resolvePermissionContext` gains a `guest` branch. Signature extended to receive the
+live guest config:
+```ts
+resolvePermissionContext(role, userId, store, guestConfig?) => {
+  admin  → { capabilities: all CAPABILITIES, bots: "all" }
+  member → stored caps + stored bots            // unchanged
+  guest  → {
+    capabilities: new Set(),                     // holds NO member capabilities
+    bots: guestConfig.bots === "all" ? "all" : new Set(guestConfig.bots),
+    guest: guestConfig.permissions,              // resolved per-request from live config
+  }
+}
+```
+`PermissionContext` and `req.user` gain an optional `guest?: GuestPermissions`. Because
+`req.user` is rebuilt per request, toggling a permission or the bot scope takes effect on
+the guest's next request (no re-login).
+
+### Unified authorization gate (`src/web/middleware/authorize.ts`, new)
+Replaces `requirePermission('x')` on **guest-reachable** routes:
+```ts
+authorize({ capability?: Capability, guestFlag?: keyof GuestPermissions })
+  // 401 if no req.user
+  // admin  → next()
+  // guest  → (req.user.guest?.[guestFlag] === true) ? next() : 403   // also 403 if no guestFlag
+  // member → (capability && req.user.capabilities.has(capability)) ? next() : 403
+```
+- Member/admin semantics are **identical** to today's `requirePermission`.
+- A route with no `guestFlag` is automatically guest-denied (safe default).
+- `requireBotAccess` is unchanged and already enforces the guest `bots` scope (guests
+  flow through `req.user.bots`).
+- `requireAdmin` is unchanged (guests are non-admin → 403), so `/api/users` and
+  `/api/audit` stay locked.
+
+### Route changes (`src/web/api/player.ts`, `bot.ts`, `music.ts`)
+- Re-express guest-reachable player routes via `authorize({ capability, guestFlag })`:
+  - `/add`, `/add-song`, `/add-by-id` → `{ capability: "player.queue", guestFlag: "addToQueue" }`
+  - `/play-next-song` → `{ capability: "player.control", guestFlag: "playNext" }`
+    (members keep `player.control`; guests pass only via `playNext`)
+  - new guest-safe **play-now** → `{ capability: "player.control", guestFlag: "playNow" }`
+  - `/next` → `{ capability: "player.control", guestFlag: "skip" }`
+  - `/pause`,`/resume`,`/seek`,`/volume` → `{ capability: "player.control", guestFlag: "transport" }`
+  - `DELETE /queue/:index`, `/clear` → `{ capability: "player.queue", guestFlag: "removeClear" }`
+  - `/mode`, `/fm` → `{ capability: "player.control", guestFlag: "playMode" }`
+  - everything else stays `authorize({ capability })` (no guest flag) → guest-denied.
+- **Guest-safe play-now**: a new behavior (own route, e.g. `POST /:botId/play-now`, or a
+  `mode:"now"` branch) that does `queue.addNext(song)` then advances to it (skip into the
+  inserted track) — **no `queue.clear()`**. Members/admins may also use it; the existing
+  destructive `/play-song` stays for the normal ▶ in non-guest UI. Exact wiring decided
+  in the plan.
+- **Close ungated reads against guests:** `GET /api/bot/settings` and
+  `GET /api/music/quality` currently have no guard, so a guest could read config. Add a
+  small `requireNotGuest` guard (allow `admin` + `member`, deny `guest` → 403). This
+  **does not change member/admin behavior** — members keep their current read access; only
+  guests are newly denied. (Deliberately not a new member capability, to avoid touching
+  member semantics.)
+
+### WebSocket (`src/web/websocket.ts`, `src/web/server.ts`)
+- Guests authenticate over the WS upgrade unchanged (session cookie). 
+- **Add per-client bot-scope filtering** for guests: the upgrade handler already stamps
+  `ws.userId`; also resolve and stamp the client's bot scope (`"all"` or a Set). In
+  `setupWebSocket`, when sending `init` and broadcasting `stateChange` /
+  `botConnected/Disconnected/Removed`, **filter to bots the client may see**. For guests
+  with a scoped `bots` list, out-of-scope bots are omitted. Admin/member payloads are
+  unchanged (they resolve to `"all"` or their existing member scope — to avoid changing
+  member behavior, filtering may be applied **only when the client is a guest**; decided
+  in the plan).
+
+### Settings write (`POST /api/bot/settings`)
+Extend the existing settings writer (today only idle-timeout + auto-pause) to also accept
+and persist the `guestMode` block (admin-only via `bot.manage`/`requireAdmin`), calling
+`saveConfig`. Live effect: subsequent guest requests read the updated in-memory config.
+
+## Frontend design
+
+- **`useSession.ts`**: extend `User` with `role:'guest'` and a `guest?: GuestPermissions`
+  field (from `/api/session/me`). Add `isGuest` computed and `guestCan(flag)`; make `can`
+  guest-aware where it maps cleanly, but UI gating for guest-specific actions uses
+  `guestCan('addToQueue' | 'playNext' | ...)`. `canControlBot` already enforces the bot
+  scope and works for guests via the `bots` field.
+- **Login page (`Login.vue`)**: when `guestAllowed`, show a prominent
+  "以游客身份进入 / Continue as guest" button calling a new `session.continueAsGuest()`
+  → `POST /api/session/guest` → refresh → redirect to `?next` or home.
+- **Router (`web/src/router/index.ts`)**: in the global `beforeEach`, block guests from
+  `/settings` and `/setup` (redirect to home). Default-off ⇒ when not a guest, behavior
+  is unchanged.
+- **Navbar (`Navbar.vue`)**: hide the settings cog for guests; add a `游客` role badge
+  branch; the bot selector already filters via `canControlBot`, so scoped guests only see
+  allowed bots.
+- **App shell (`App.vue`)**: hide the mobile `/settings` tab for guests; the mini-player
+  transport reduces to the guest's allowed actions.
+- **SongCard / Queue / Player**: gate each action button by the matching `guestCan(flag)`
+  (e.g. show ▶/下一首/添加 per `playNow`/`playNext`/`addToQueue`; show skip/transport/
+  remove/clear/mode per their flags). Buttons a guest lacks are hidden, mirroring how
+  `Queue.vue` already gates on `can('player.queue')` / `can('player.control')`.
+- **Settings → Guest mode admin section (`Settings.vue`)**: new admin-only panel: a
+  master enable switch, the 7 permission checkboxes (with 中文 labels), and a bot scope
+  control (an "全部机器人 / all bots" toggle + per-bot checkboxes) reusing the existing
+  member permission-editor bot allow-list UI. Saving calls `POST /api/bot/settings` with
+  the `guestMode` block.
+
+## Defaults, migration & backward-compat
+
+- `getDefaultConfig().guestMode.enabled = false` ⇒ **no behavior change** on upgrade;
+  existing installs see nothing until an admin opts in.
+- Migration adds the reserved `__guest__` user row idempotently (guarded like the
+  existing `backfillMemberPermissions` `schema_meta` marker) and does **not** grant it
+  any `user_permissions` (guest authorization is config-driven, not row-driven).
+- `loadConfig` deep-merges `guestMode` so older config files gain the new block with
+  defaults.
+- Member/admin flows, capabilities, and the backfill are untouched.
+
+## Testing (TDD)
+
+- **Config**: `getDefaultConfig` includes `guestMode` default-off; `loadConfig`
+  deep-merges a partial `guestMode` (missing sub-keys back-filled); round-trips through
+  `saveConfig`.
+- **`resolvePermissionContext` guest branch**: empty member capabilities; `bots` `"all"`
+  vs scoped Set; `guest` permissions object passthrough.
+- **`authorize` gate**: admin bypass; member has/lacks capability → 200/403 (regression
+  parity with `requirePermission`); guest allowed only when the specific flag is true;
+  guest with no flag on a route → 403; guest on settings reads → 403.
+- **Enforcement (mirror `permissions-enforcement.test.ts`)**: each toggle independently
+  opens exactly its route(s) for a guest and nothing else; `/play-song`/`/play-playlist`/
+  `/play-album` always 403 for guests; per-bot scope: guest 403 on out-of-scope `:botId`.
+- **Session entry**: `POST /api/session/guest` → 403 when disabled, mints guest session
+  when enabled; guest session bypasses `MAX_SESSIONS_PER_USER`; disabling guest mode
+  invalidates existing guest sessions (401); guest TTL shorter than member TTL.
+- **WS scope**: guest receives only in-scope bots' `init`/`stateChange`; reject upgrade
+  unchanged for no cookie.
+- **Frontend** (where covered): `guestCan` gating; router blocks `/settings` for guests.
+
+## Non-goals (YAGNI)
+
+- No guest accounts/usernames, passwords, favorites, or persistence per guest.
+- No per-guest individual identity or rate-limiting beyond the existing IP rate limits
+  (a basic abuse guard on `/api/session/guest` is in; richer abuse controls are future).
+- No change to the `admin | member` capability semantics; guest is an additive,
+  config-driven third principal.
+- No chat-command (TeamSpeak `!add`/`!playnext`) changes — guest mode is **WebUI-only**
+  (the issue is explicitly about WebUI 鉴权).
+- Per-guest bot scoping beyond a single shared guest scope is out of scope (one guest
+  scope applies to all guests).
+
+## Key files touched
+
+Backend: `src/data/config.ts` (+test), `src/data/permissions.ts` (+test),
+`src/data/users.ts` (role union, reserved guest row), `src/data/database.ts` (migration),
+`src/data/sessions.ts` (guest TTL + cap bypass), `src/web/middleware/authorize.ts` (new,
++test), `src/web/middleware/requireNotGuest.ts` (new, small — for the config reads),
+`src/web/api/session.ts` (guest endpoint, `/me`, `needs-setup`),
+`src/web/api/player.ts` (re-gate + guest play-now), `src/web/api/bot.ts` (settings
+read-lock + guestMode write), `src/web/api/music.ts` (quality read-lock),
+`src/web/server.ts` + `src/web/websocket.ts` (WS scope), `src/web/auth/validateSession.ts`
+(guest disable→401), enforcement tests.
+
+Frontend: `web/src/composables/useSession.ts`, `web/src/views/Login.vue`,
+`web/src/router/index.ts`, `web/src/components/Navbar.vue`, `web/src/App.vue`,
+`web/src/components/SongCard.vue`, `web/src/components/Queue.vue`,
+`web/src/components/Player.vue`, `web/src/views/Settings.vue`,
+`web/src/stores/player.ts`.

docs/superpowers/specs/2026-06-25-ts-command-permissions-design.md

@@ -0,0 +1,116 @@
+# TeamSpeak chat-command permission control — design
+
+**Origin:** User request — "给 ts 命令也加上权限控制" (give the TS chat commands permission control too, like the WebUI already has). Completes the unused `adminGroups` scaffold the original authors left behind.
+**Date:** 2026-06-25
+**Status:** Approved (brainstorm), pending implementation plan
+
+## Scope
+
+Add permission control to **TeamSpeak chat commands** (`!play`, `!add`, `!stop`, …). Today any client in a channel with the bot can run any command; only the WebUI path is permission-gated. This adds a **binary admin gate** keyed on the sender's **TS server groups**: a fixed set of "admin" commands may be restricted to members of configured admin server-groups, while all other commands stay public. Enforcement is **opt-in and backward-compatible** — it activates only once an admin lists their server-group ID(s).
+
+The privileged server-groups are configured in `config.adminGroups` (already declared, currently unused) and become editable from the WebUI.
+
+## Problem
+
+`src/bot/commands.ts` already declares `PUBLIC_COMMANDS` / `ADMIN_COMMANDS` sets and an `isAdminCommand()` helper, and `src/bot/instance.ts:325` has the stub `// TODO: Check if invoker is in adminGroups` — but none of it gates anything. `config.adminGroups: number[]` (`src/data/config.ts:21,46`) is documented as a legacy placeholder and read nowhere. So chat commands are unauthenticated: anyone can `!stop`, `!clear`, `!remove`, move the bot, change volume/mode. The WebUI, by contrast, gates everything via `authorize()` at the HTTP layer.
+
+`executeCommand` (`instance.ts:351`) is **shared** by the chat handler and the WebUI player router; the WebUI gates at the HTTP layer, so the chat gate must live in the **chat handler**, never inside `executeCommand` (else the already-gated WebUI would be double-gated).
+
+## Decisions (from brainstorm)
+
+1. **Binary admin gate**, not per-group capabilities and not a whole-bot allowlist. Reuses the existing `adminGroups` scaffold.
+2. **Admin command set (fixed, one source of truth):** `stop`, `clear`, `remove`, `move`, `vol`, `mode`. Everything else is public. The set lives in one constant so reclassifying a command is a one-line change.
+3. **Default = open / opt-in (backward-compatible):** when `config.adminGroups` is empty (the default), there is **no enforcement** — admin commands stay open to everyone, exactly as today. Enforcement turns on only when `adminGroups` is non-empty.
+4. **Identity key = TS server groups**, matched against `adminGroups`.
+5. **Fail-closed on undeterminable groups:** if an admin command arrives, enforcement is on, and the sender's groups cannot be determined (even after a fallback lookup), **deny**.
+6. **Reply on deny:** the bot sends the sender a brief permission-denied message (silent denial is confusing; the bot already replies to commands).
+7. **Config surface:** `adminGroups` becomes editable from an admin-only WebUI Settings section, live-applied via the existing `/api/bot/settings` endpoint; `config.json` continues to work.
+
+## Permission model
+
+Tier definitions live in `src/bot/commands.ts` (repurpose the existing dead sets; the admin set is the source of truth):
+- **Admin commands:** `stop`, `clear`, `remove`, `move`, `vol`, `mode`.
+- **Public commands:** all others (`play`, `add`, `playnext`/`pn`, `skip`/`next`, `prev`, `pause`, `resume`, `now`, `queue`/`list`, `lyrics`, `vote`, `help`, `search`/`find`, `playlist`, `album`, `artist`, `fm`).
+
+**Enforcement rule** — a command is **allowed** iff:
+1. it is a public command, **OR**
+2. `config.adminGroups` is empty (enforcement off), **OR**
+3. the sender's server groups ∩ `config.adminGroups` ≠ ∅.
+
+Otherwise it is **denied** (no execution; a denial reply is sent).
+
+Expressed as a pure, unit-testable helper (no TS/async dependency):
+```ts
+// returns true = allowed, false = denied
+function canRunCommand(
+  commandName: string,
+  invokerGroups: readonly (string | number)[],
+  adminGroups: readonly number[]
+): boolean
+```
+- not an admin command → `true`.
+- admin command, `adminGroups.length === 0` → `true` (enforcement off).
+- admin command, non-empty `adminGroups` → `true` iff any `invokerGroups` value (normalized to number/string consistently) is in `adminGroups`, else `false`.
+
+> Note: `invokerGroups` from TS are strings; `adminGroups` are numbers. Normalize both sides (compare as the same type) to avoid `"6" !== 6` bugs.
+
+## Identity resolution
+
+The TS library already delivers the sender's server groups on each chat event (`TextMessage.invokerGroups: string[]` in `@honeybbq/teamspeak-client`), but the wrapper type `TS3TextMessage` (`src/ts-protocol/client.ts:58-64`) and its mapping (`client.ts:205-214`) **drop** it.
+
+Changes:
+1. Add `invokerGroups: string[]` to `TS3TextMessage` and populate it from `msg.invokerGroups` in the mapping.
+2. **Availability caveat:** `invokerGroups` is populated only when the sender's client is in the bot's local cache (typically same channel / in view). For a private message from an unseen client, it is `[]`.
+3. **Fallback lookup (only when needed):** in the gate, if the command is admin-gated **and** enforcement is on **and** `invokerGroups` is empty, perform a targeted lookup of the sender's groups keyed on `invokerId` (clid) — reuse the already-wrapped `getClientsInChannel()` (`client.ts:314-323`, whose `ClientInfo` carries `serverGroups`), or add a thin wrapper around the library's `getClientInfo(client, clid)` for a precise `clientinfo` query. This query is skipped entirely for public commands, when enforcement is off, and when the event already carried groups (the common "listener in the channel types `!stop`" case).
+4. **Fail-closed:** if after the fallback the groups are still unknown, deny the admin command.
+
+## Enforcement seam
+
+In `handleTextMessage` (`src/bot/instance.ts:317`), replace the dead stub at `instance.ts:325-327` with the real check, placed after `parseCommand` succeeds and **before** `executeCommand` (`instance.ts:335`):
+- compute `allowed` via `canRunCommand(parsed.name, msg.invokerGroups, this.config.adminGroups)`, performing the async fallback lookup only when the synchronous check is "deny due to empty groups on an admin command with enforcement on";
+- if denied → send the denial reply to `msg` (respecting its `targetMode`/sender) and return without executing;
+- if allowed → `executeCommand(parsed, msg)` as today.
+
+`executeCommand` stays permission-agnostic, so the WebUI path is unaffected.
+
+**Live config:** `BotInstance` already holds the shared `config` object by reference (passed through `BotInstanceOptions`); `POST /api/bot/settings` mutates that same object in place, so reading `this.config.adminGroups` in the gate reflects edits immediately — no restart, no re-wiring. (Implementation must confirm the instance reads `adminGroups` from the live `config` reference, not a copied-at-construction value.)
+
+## Denied UX
+
+The bot replies to the sender with a short bilingual-ish message, e.g. `⛔ 需要管理员权限（该命令仅限管理员服务器组）`, via the same reply mechanism the command handlers already use, honoring the message's `targetMode` (private vs channel). No execution occurs.
+
+## Config surface
+
+**Backend** (`src/web/api/bot.ts`): extend the existing settings endpoints (already admin-gated: `GET` behind `requireNotGuest`, `POST` behind `requirePermission("bot.manage")`):
+- `GET /api/bot/settings` → also return `adminGroups: number[]`.
+- `POST /api/bot/settings` → also accept `adminGroups`; validate it is an array of non-negative integers (filter/reject otherwise), assign to `config.adminGroups`, `saveConfig`. Reuses the in-place-mutation + `saveConfig` pattern already used for idle-timeout/auto-pause/guestMode, so it is live-applied.
+
+**Frontend** (`web/src/views/Settings.vue`): a new admin-only section **"命令权限 / Command permissions"** (`v-if="session.isAdmin.value"`), mirroring the idle-timeout/guest-mode sections:
+- a text input for comma-separated server-group IDs (parsed to `number[]`, ignoring blanks/non-numbers), a Save button calling `POST /api/bot/settings`, hydrated by the existing `loadIdleTimeout()` GET;
+- hint: "仅这些组可运行 stop/clear/remove/move/vol/mode；留空 = 不限制（所有人可用）。如何查看服务器组 ID 见 README。"
+
+**`config.json`**: `adminGroups` continues to work for file-based config.
+
+## Testing
+
+- **`canRunCommand` unit tests** (`src/bot/commands.test.ts` or a new file): public command always allowed; admin command with empty `adminGroups` allowed; admin command with a matching group allowed; admin command with no matching group denied; string-vs-number normalization (`["6"]` matches `[6]`).
+- **Handler gate tests:** a denied admin command does NOT call `executeCommand` and triggers a denial reply; an allowed admin command (matching group) and any public command DO call `executeCommand`. (Use a fake `msg` + a `config` with `adminGroups` set; stub the reply + `executeCommand`.)
+- **Fallback path:** admin command with empty `invokerGroups` + enforcement on triggers the group lookup; if the lookup yields a matching group → allowed; if it yields nothing → denied (fail-closed).
+- **Settings round-trip** (`src/web/api/bot.test.ts`): `POST /api/bot/settings` persists a validated `adminGroups`; `GET` returns it; invalid values (non-array, negative, non-integer) are rejected/filtered.
+- **Frontend:** `vue-tsc --noEmit` clean.
+
+## Non-goals (YAGNI)
+
+- No per-group capability map and no whole-bot allowlist (binary admin gate only).
+- No per-command customization of the admin/public split in the UI (the set is a code constant; reclassifying is a one-line edit).
+- No server-group picker UI (admin types IDs; a picker that lists the bot's visible groups is a possible future enhancement).
+- No new chat *management* commands.
+- No change to the WebUI authorization model or `executeCommand` semantics.
+
+## Key files touched
+
+Backend: `src/bot/commands.ts` (admin-set constant + `canRunCommand` helper, repurpose the dead sets; +test), `src/bot/instance.ts` (gate in `handleTextMessage`, denial reply, live `adminGroups`), `src/ts-protocol/client.ts` (surface `invokerGroups` on `TS3TextMessage`; possibly a `getClientInfo` wrapper for the fallback), `src/web/api/bot.ts` (settings read/write `adminGroups`; +test). Possibly `src/data/config.ts` (no schema change; `adminGroups` already exists).
+
+Frontend: `web/src/views/Settings.vue` (admin-only 命令权限 section).
+
+Docs: `README.md` (document the feature + how to find TS server-group IDs).

docs/superpowers/specs/2026-07-01-spotify-source-design.md

@@ -0,0 +1,202 @@
+# Spotify audio source (optional, hybrid librespot) — design spec
+
+- **Issue:** [#112 — Support for Spotify audio source](https://github.com/ZHANGTIANYAO1/teamspeak-music-bot/issues/112)
+- **Date:** 2026-07-01
+- **Status:** Approved (design) — pending implementation plan
+- **Chosen approach:** Hybrid — real Spotify streaming via a librespot-family sidecar, with **go-librespot on Linux/Docker** and **Rust librespot on Windows**, behind one backend interface.
+
+---
+
+## 1. Summary
+
+Add `spotify` as a new **optional** `MusicProvider`. Metadata (search / track / album / playlist) is read from the official **Spotify Web API**. Audio is the *real* Spotify stream, produced by a librespot-family sidecar and piped through ffmpeg into the bot's existing voice path.
+
+The feature is **disabled by default**, opt-in, and **requires the user's own Spotify Premium account**. librespot is an unofficial, reverse-engineered client and using it **violates Spotify's Terms of Service** (account-ban risk). This is surfaced to the user as an explicit experimental warning, and no credentials are ever bundled.
+
+If the feature is disabled, unauthenticated, or the sidecar binary is missing, the provider disables itself gracefully — exactly like `YouTubeProvider` when `yt-dlp` is absent (empty results, greyed-out in the UI, no crash).
+
+## 2. Goals / Non-goals
+
+**Goals**
+- First-class `spotify` source: search, play, playlist/album import, lyrics best-effort, login status.
+- Real Spotify audio (Premium), not a YouTube match.
+- Cross-platform: works on the project's three deployments — native Windows one-click, Linux systemd, Docker.
+- Strictly optional and safe-by-default; zero impact when off.
+- Mixed queues keep working (Spotify tracks interleaved with netease/qq/etc.).
+
+**Non-goals**
+- No free-tier audio (Premium is mandatory for librespot streaming).
+- No bundled Spotify credentials or shared Developer app.
+- No replacement of, or change to, existing sources' behavior.
+- No CI e2e against live Spotify (requires Premium; manual only).
+
+## 3. Backend selection
+
+`spotify.backend: "auto" | "go-librespot" | "librespot"` (default `auto`).
+
+| Platform | `auto` resolves to | Why |
+|---|---|---|
+| Windows | `librespot` (Rust) | go-librespot has **no** Windows binary and its FIFO capture is POSIX-only |
+| Linux / Docker | `go-librespot` (fallback `librespot`) | clean REST play-by-URI + prebuilt Linux binary |
+| macOS | `librespot` (or `go-librespot` if built) | no go-librespot macOS binary published |
+
+The split is **platform-determined**, not a per-run user toggle (a user may still force one via config if they have the binary).
+
+## 4. Architecture
+
+### 4.1 The seam — `SpotifyAudioBackend`
+
+New file `src/music/spotify/backend.ts`:
+
+```ts
+export interface SpotifyTrackEndedEvent { uri: string; reason: "ended" | "stopped" | "error"; }
+
+export interface SpotifyAudioBackend {
+  start(): Promise<void>;                    // launch sidecar + resampling ffmpeg
+  stop(): void;                              // tear everything down
+  isReady(): boolean;                        // device online & streamable
+  playTrack(uri: string): Promise<void>;     // begin ONE track (spotify:track:...)
+  pause(): Promise<void>;
+  resume(): Promise<void>;
+  seek(ms: number): Promise<void>;
+  getPcmStream(): Readable;                   // 48kHz s16le stereo (post-ffmpeg)
+  getPosition(): number;                      // ms into current track
+  on(event: "trackEnded", cb: (e: SpotifyTrackEndedEvent) => void): void;
+  on(event: "metadata", cb: (m: SpotifyNowPlaying) => void): void;
+  on(event: "ready" | "error", cb: (arg?: unknown) => void): void;
+}
+```
+
+Both implementations emit the **same** 48 kHz s16le stereo PCM and the **same** events, so everything above the seam (provider, controller, player, UI) is backend-agnostic.
+
+### 4.2 `GoLibrespotBackend` (Linux/Docker) — `src/music/spotify/go-librespot.ts`
+
+- Writes a `config.yml` with `server: { enabled: true, address: 'localhost', port: <p> }`, `audio_backend: 'pipe'`, `audio_output_pipe: '<fifo>'`, `audio_output_pipe_format: 's16le'`, `bitrate: 320`, credentials block.
+- `start()`: `mkfifo <fifo>` → **spawn the FIFO-reading ffmpeg first** → then spawn go-librespot. (FIFO open ordering is mandatory: go-librespot opens the write end with `O_WRONLY|O_NONBLOCK` and errors `ENXIO` if no reader exists yet.) ffmpeg: `-f s16le -ar 44100 -ac 2 -i <fifo> -f s16le -ar 48000 -ac 2 -`. ffmpeg stdout = `getPcmStream()`.
+- Control (REST): `POST /player/play {uri}`, `POST /player/pause`, `POST /player/resume`, `POST /player/seek {position}`. `GET /status` for position.
+- Events (WebSocket `/events`): `metadata` → `metadata`; `not_playing` → `trackEnded` (track boundaries can NOT be read from the FIFO — it is gapless/continuous and never EOFs between tracks).
+- Metadata token: go-librespot exposes `POST /token` (first-party session token) and a `/web-api/<path>` proxy to `api.spotify.com` — so on this backend a separate Spotify Developer app is **optional**.
+- Recovery: on reader death go-librespot's write returns `EPIPE` and closes the pipe output; backend restarts the ffmpeg reader + reactivates the device.
+
+### 4.3 `RustLibrespotBackend` (Windows / cross-platform) — `src/music/spotify/rust-librespot.ts`
+
+Rust librespot is a **passive Spotify Connect receiver**; the bot acts as the **Connect controller** via the Spotify Web API.
+
+- `start()`: spawn `librespot --backend pipe --name "<deviceName>" --bitrate 320 --cache <dir> [--access-token <tok> | --enable-oauth]`. With **no `--device`**, librespot writes raw PCM (**s16le, 44100 Hz, stereo**) to **stdout** (cross-platform; verified against `pipe.rs` — `None => Box::new(io::stdout())`). Pipe stdout → ffmpeg `-f s16le -ar 44100 -ac 2 -i pipe:0 -f s16le -ar 48000 -ac 2 -` → `getPcmStream()`. Do **not** pass `--passthrough` (that emits raw Ogg, not PCM).
+- `playTrack(uri)`: `GET /v1/me/player/devices` → find our `device_id` by `deviceName` → `PUT /v1/me/player/play?device_id={id}` body `{uris:[uri]}`. `pause/resume/seek` → `PUT /v1/me/player/{pause,play,seek}`.
+- `trackEnded`: poll `GET /v1/me/player` (is_playing → false / `item` changed / `progress_ms ≈ duration_ms`) plus optional `--onevent` hook (read-only notifications). Add a watchdog + retry/backoff for device-visibility latency and command `202/404` flakiness.
+- Requires a **user OAuth token** with scopes `streaming user-read-playback-state user-modify-playback-state user-read-currently-playing` (+ `playlist-read-private playlist-read-collaborative` for user playlists).
+
+## 5. Shared subsystems
+
+### 5.1 Metadata — `src/music/spotify/webapi.ts`
+
+Thin `axios` client mapping Spotify catalog objects → the bot's `Song` / `Playlist` / `Album`:
+- `GET /v1/search?type=track,album,playlist&q=…`
+- `GET /v1/tracks/{id}`, `GET /v1/albums/{id}/tracks`, `GET /v1/playlists/{id}/tracks`
+
+All confirmed still available with a normal token **after** Spotify's 2024-11-27 cut (that cut removed related-artists, recommendations, audio-features/analysis, featured/category playlists, and `preview_url` — none of which we use). Token source is pluggable: user Developer-app token (primary) or go-librespot `/web-api` proxy (go-librespot path). Handle `429 Retry-After` (rolling 30 s window; dev-mode quota).
+
+### 5.2 Auth — `src/music/spotify/auth.ts`
+
+One web-UI **Authorization-Code + PKCE** login.
+- **Primary:** the user registers their own Spotify Developer app (Client ID [+ Secret] + redirect URI) — reliable, ToS-cleaner. The resulting access token drives metadata + Web-API control; the refresh token is persisted (credential store); access tokens (~1 h) auto-refresh. The same token bootstraps librespot via `--access-token`, after which librespot caches reusable credentials — **one user-facing login**.
+- **Fallbacks:** librespot `--enable-oauth` (built-in client `65b708073fc0480ea92a077233ca87bd`, redirect `http://127.0.0.1:8898/login`) or go-librespot interactive login (`http://127.0.0.1:36842/login?code=…`) as a separate one-time step; go-librespot `/web-api` proxy when no Developer app is provided.
+- Username/password is **dead** (removed by Spotify in 2024); do not implement it.
+
+### 5.3 Provider — `src/music/spotify/provider.ts`
+
+`SpotifyProvider implements MusicProvider` with `platform: "spotify"`:
+- `search`, `getSongDetail`, `getPlaylistSongs`, `getAlbumSongs`, `getLyrics` (best-effort/empty), `getRecommendPlaylists` → Web API.
+- `getAuthStatus()` reports login state **and** backend/binary availability (drives greying-out in UI, like YouTube).
+- `getSongUrl(id)` returns a **sentinel** (`{ url: "spotify:track:<id>" }`) — actual playback is via the backend/controller, not a URL. `instance.ts` recognizes the sentinel and routes to the `SpotifyController`.
+- QR-code login methods are no-ops; Spotify uses the OAuth card instead.
+
+## 6. Queue / player / instance integration
+
+- **`SpotifyController`** (`src/music/spotify/controller.ts`, one per bot): owns the chosen backend and the Web-API/auth clients; exposes `playTrack/pause/resume/seek/stop` and forwards `trackEnded`/`metadata`.
+- **`AudioPlayer` — new external-PCM mode:** add `playPcmStream(readable, { onExternalEnd })` that feeds the existing `pcmBuffer` → 20 ms frame loop → encoder → `frame` path **without spawning a url-ffmpeg**. For Spotify, `trackEnd` is driven by the backend's `trackEnded` event (the librespot→ffmpeg pipeline is long-lived and does not exit per song). `pause/resume/seek` on a Spotify song are routed to the backend by `instance.ts` (and gate frame emission locally for crisp UI state).
+- **`instance.ts`:** `getProviderFor("spotify")`, a `-s` command flag in `getProvider(flags)`. When a dequeued `song.platform === "spotify"`: ensure the controller/backend is started + device active, `playTrack(uri)`, attach the player to the backend PCM. On `trackEnded` → advance the queue. When a **non-Spotify** song is next, **pause the sidecar** (so it doesn't buffer ahead) and use the normal `player.play(url)` path. This preserves one-track-at-a-time on-demand playback and mixed-source queues.
+- Real-time pacing is guaranteed by the voice consumer: TS voice pulls 20 ms frames at real time → the player reads PCM at real time → ffmpeg's read of the sidecar stalls → sidecar backpressure pauses decode. (This is why go-librespot's pull model avoids the classic librespot "plays too fast / skips" bug; Rust librespot to stdout is likewise paced by our reads.)
+
+## 7. Config, opt-in & safety
+
+`BotConfig.spotify` (all default-off), added to `getDefaultConfig()` and sanitized in `loadConfig()`:
+
+```ts
+spotify: {
+  enabled: false,
+  backend: "auto",              // "auto" | "go-librespot" | "librespot"
+  clientId: "",                 // user's Developer app (optional on go-librespot path)
+  clientSecret: "",             // optional — PKCE needs none; only for confidential/client-credentials flows
+  deviceName: "TSMusicBot",
+  bitrate: 320,                 // 96 | 160 | 320
+}
+```
+
+Inert unless `enabled` **and** logged-in **and** a resolvable binary. First-run/settings shows the experimental + ToS + Premium + own-credentials warning. Never store or transmit shared secrets.
+
+## 8. Web UI
+
+- Add `spotify` to `platform` and `Source` unions (`web/src/stores/player.ts`, `web/src/stores/sourceTabs.ts`).
+- `SourceTabs.vue`: add "Spotify" tab; `SongCard.vue`: green **#1DB954** badge; `variables.scss`: `--brand-spotify` tokens.
+- `stores/player.ts`: extend `authStatus` / `recommendPlaylists` / `dailySongs` / `userPlaylists` maps + the auth/recommend fetch fan-out.
+- Settings: a **Spotify login card distinct from the QR cards** — "Connect Spotify" OAuth button, optional Client ID/Secret fields, backend/binary status indicator, and the risk disclaimer.
+
+## 9. Binary / dependency resolution — `src/music/spotify/binary.ts`
+
+Mirror `findYtDlp()`: resolve `go-librespot` / `librespot(.exe)` from `bin/` then PATH; positive availability cached, negative retried (install-while-running).
+- **No prebuilt Rust librespot exists** (source-only: `cargo install librespot`, distro/`scoop`/`choco`, or a binary dropped in `bin/`).
+- **go-librespot** ships **Linux-only** assets (`go-librespot_linux_{x86_64,arm64,armv6,armv6_rpi}.tar.gz`, ~6 MB, at `github.com/devgianlu/go-librespot/releases`). Docker build downloads the correct Linux asset; optional runtime auto-download (like yt-dlp). go-librespot is **GPL-3.0** → sidecar = mere aggregation (does not infect the Node code); ship its license text + a source offer.
+- Unresolved binary → source disabled with an actionable "install X / see docs" message.
+
+## 10. Testing
+
+Vitest, mocking child processes and HTTP:
+- Web-API response → `Song/Playlist/Album` mapping.
+- `chooseBackend()` per platform/config.
+- Auth: PKCE challenge, token refresh, credential persistence.
+- Config load/sanitize (defaults, hand-edited/corrupt input).
+- `SpotifyProvider` methods (mock webapi).
+- Player external-PCM path: feed a fake `Readable` → assert `frame` emission + `trackEnd` on external end.
+- go-librespot `/events` → `trackEnded` translation; Rust-backend Web-API poll → `trackEnded`.
+- e2e against live Spotify is **manual & documented** (Premium required), not CI.
+
+## 11. Files touched
+
+**New:** `src/music/spotify/{provider,backend,go-librespot,rust-librespot,webapi,auth,controller,binary}.ts` (+ `.test.ts`).
+**Edited (backend):** `src/music/provider.ts` (union: `Song`/`Playlist`/`Album`/`MusicProvider`), `src/index.ts`, `src/bot/manager.ts`, `src/bot/instance.ts` (router + `-s` flag + spotify routing), `src/audio/player.ts` (external-PCM mode), `src/data/config.ts`, `src/music/auth.ts` (credential store union), `src/web/api/auth.ts`, `src/web/api/music.ts` (routers + search aggregation), `src/web/server.ts`, `src/data/database.ts` (platform).
+**Edited (frontend):** `web/src/stores/player.ts`, `web/src/stores/sourceTabs.ts`, `web/src/components/SourceTabs.vue`, `web/src/components/SongCard.vue`, `web/src/styles/variables.scss`.
+**Docs:** `README.md` (Spotify section + warnings + install notes).
+
+## 12. Staged rollout
+
+1. **Metadata + provider + config + UI plumbing** (no audio): `spotify` source searchable/browsable; playback returns "not yet playable". Fully testable without a sidecar.
+2. **go-librespot backend (Linux/Docker):** real playback on Linux; REST + FIFO + WebSocket.
+3. **Rust librespot backend (Windows):** stdout PCM + Web-API Connect control.
+4. **Polish:** recovery/watchdog, docs, binary auto-download, README.
+
+## 13. Risks & open questions
+
+- **Rust librespot control is the top risk** — Connect device visibility/latency, poll-based track-end. Mitigation: retry/backoff + watchdog; degrade to "skipped" on repeated failure.
+- **One-OAuth-token bootstraps librespot** (`--access-token` from the user's own app client) is *plausible but unverified* — may fall back to two one-time logins. Verify with a spike in stage 3.
+- **Windows go-librespot is impossible** (FIFO) → Windows always uses Rust librespot.
+- **Token scope from librespot's built-in client** may not include `user-modify-playback-state`; if so, a user Developer app is required for the Rust/Windows control path.
+- Large surface area → staged rollout above; each stage independently shippable.
+
+## Appendix A — Verified technical facts (with sources)
+
+go-librespot API (`devgianlu/go-librespot`, v0.7.x):
+- REST: `POST /player/{play,pause,resume,playpause,stop,next,prev,seek,volume,add_to_queue}`, `GET /status`, `GET /` (`{playback_ready}`), `POST /token`, `GET|POST /web-api/<path>`. `POST /player/play` body `{uri, skip_to_uri?, paused?}`. Server enabled only when `server.enabled: true`.
+- WebSocket `/events` envelopes `{type, data}`; types include `metadata, will_play, playing, paused, not_playing, stopped, seek, volume, active, inactive`. Track-end = `not_playing`.
+- Pipe backend: continuous raw PCM, no header, 44100 Hz stereo, format `s16le|s32le|f32le`; FIFO opened once; POSIX-only. Backpressure real (blocks when reader stalls).
+- Sources: `github.com/devgianlu/go-librespot` (README, `api-spec.yml`, `daemon/api_server.go`, `output/driver-pipe.go`).
+
+Rust librespot (`librespot-org/librespot`, v0.8.0, MIT):
+- `--backend pipe` with no `--device` → raw PCM to **stdout**; default S16 / 44100 / stereo; `--format` for higher bit depth; `--passthrough` = raw Ogg (do not use). Passive Connect receiver — no play-by-URI; control via Web API Connect. `--onevent` = read-only hook. No prebuilt binaries.
+- Sources: `github.com/librespot-org/librespot` wiki (Audio-Backends, Options), `librespot_playback/audio_backend/pipe.rs`, `docs/authentication.md`.
+
+Spotify auth & Web API:
+- Username/password removed (2024); use OAuth (Auth-Code+PKCE) or Zeroconf. Premium required for librespot audio.
+- Client-Credentials token authorizes `/v1/search` + public track/album/playlist GETs; 2024-11-27 cut did **not** touch these. Token endpoint `POST https://accounts.spotify.com/api/token` (`grant_type=client_credentials`, Basic base64(id:secret), `expires_in=3600`, no refresh). 429 on a rolling 30 s window.
+- Sources: `developer.spotify.com` (Web API docs; 2024-11-27 blog), `librespot` `docs/authentication.md`.

docs/superpowers/specs/2026-07-06-save-load-playlist-design.md

@@ -0,0 +1,227 @@
+# Save/Load Playlists + Queue Persistence — Design
+
+**Issue:** [#119](https://github.com/ZHANGTIANYAO1/teamspeak-music-bot/issues/119) — 加入保存和加载播放清单功能
+**Date:** 2026-07-06
+**Status:** Approved (design), pending implementation plan
+
+## Problem
+
+The play queue lives only in memory (`PlayQueue` inside each `BotInstance`). It is lost in two situations the user calls out:
+
+1. **On restart** — the process stops, the in-memory queue is gone.
+2. **On "直接播放"** — `!play <song>` (and the WebUI "play now" path) call `queue.clear()`, wiping the queue to play one song.
+
+The user wants to stop losing the queue. Two related-but-separate capabilities were agreed:
+
+- **Named save/load** of queues (manual), plus **auto-restore** of the live queue across restarts.
+- An **independent** option to make single-song immediate-play *not* clear the queue.
+
+Everything ships **behind admin/independent toggles that default OFF**, so existing behavior is unchanged until an operator opts in.
+
+## Scope & agreed decisions
+
+| Decision | Choice |
+| --- | --- |
+| Core behavior | **Both** — named save/load **and** auto-restore live queue across restart |
+| Saved-queue ownership | **Per-user** (like `favorite_playlists`), plus a reserved `__shared__` owner for chat + opt-in sharing |
+| Trigger surface | **Web + chat** commands |
+| Auto-restore on restart | **Restore and resume playing** (gated by `savedQueuesEnabled`) |
+| Load semantics | **Replace (default) + append option** (`-a` flag / WebUI Append button) |
+| Feature gate | `savedQueuesEnabled` — **default false, admin-controlled** |
+| Single-play clear | Independent `playKeepsQueue` toggle — **default false** |
+
+### Out of scope (YAGNI)
+
+- Renaming a saved queue (delete + re-save instead).
+- Mid-track resume on restart (resume from the current track's **start**; URLs are re-resolved).
+- Normalized per-song storage (songs stored as a JSON blob).
+- Sharing granularity beyond "private to me" vs "shared" (one boolean).
+
+## Storage approach
+
+A saved queue is an ordered list of songs that is only ever saved and loaded **whole** — never queried song-by-song. So songs are stored as a **JSON `TEXT` blob**, not a normalized child table. Each stored song is a `QueuedSong` **without `url`** (URLs are resolved lazily at play time, exactly as today). This mirrors how `QueuedSong` already flows and keeps the schema to a single row per saved queue.
+
+---
+
+## Feature 1 — Named save/load (`savedQueuesEnabled`)
+
+### Data model
+
+New table:
+
+```sql
+CREATE TABLE IF NOT EXISTS saved_queues (
+  id        INTEGER PRIMARY KEY AUTOINCREMENT,
+  ownerId   TEXT NOT NULL,          -- WebUI user id, or the reserved SHARED owner
+  name      TEXT NOT NULL,
+  songs     TEXT NOT NULL,          -- JSON array of stored songs (QueuedSong minus url)
+  songCount INTEGER NOT NULL DEFAULT 0,
+  createdAt TEXT NOT NULL DEFAULT (datetime('now')),
+  updatedAt TEXT NOT NULL DEFAULT (datetime('now')),
+  UNIQUE(ownerId, name)
+);
+CREATE INDEX IF NOT EXISTS idx_saved_queues_ownerId ON saved_queues(ownerId);
+```
+
+- **`ownerId`** is either a real user id **or** a reserved constant `SHARED_QUEUE_OWNER = "__shared__"` (a value that can never collide with a real user id).
+- **Ownership rule (reconciles per-user with chat):**
+  - **WebUI save** has a **"共享 (shared)" checkbox.** Off → `ownerId = req.user.id` (private to you). On → `ownerId = SHARED_QUEUE_OWNER`.
+  - **Chat `!save`** always writes `ownerId = SHARED_QUEUE_OWNER` (TeamSpeak users have no WebUI account).
+  - **WebUI list** shows **your own + shared** (labeled). **Chat `!queues`/`!load`** see **shared only**.
+- **Overwrite:** `UNIQUE(ownerId, name)` → save is an **upsert** (same owner+name replaces `songs`, `songCount`, `updatedAt`).
+- **Caps** (reject with a clear message): ≤ **50** saved queues per owner; ≤ **1000** songs per saved queue.
+
+### DB methods (added to `BotDatabase`)
+
+```ts
+saveQueue(ownerId: string, name: string, songs: StoredSong[]): SavedQueue;   // upsert
+listSavedQueues(ownerId: string, includeShared: boolean): SavedQueueMeta[];  // meta only (no songs blob)
+getSavedQueue(id: number): SavedQueue | null;                                // full, with songs
+deleteSavedQueue(id: number): boolean;
+```
+
+- `StoredSong` = `Omit<QueuedSong, "url">`.
+- `SavedQueueMeta` = row without the `songs` blob (id, ownerId, name, songCount, timestamps) — keeps list responses light.
+- JSON (de)serialize at the DB boundary; parse failures on a corrupt blob degrade to an empty song list (never throw into a route).
+
+### Web API — `src/web/api/saved-queues.ts`
+
+All routes require auth + `player.queue` capability, and **404/403 when `savedQueuesEnabled` is false** (feature inert).
+
+| Method / path | Behavior |
+| --- | --- |
+| `GET /api/saved-queues` | list current user's own + shared (meta only) |
+| `POST /api/saved-queues` | body `{ botId, name, shared? }` → snapshot that bot's **current queue** songs, upsert |
+| `POST /api/saved-queues/:id/load` | body `{ botId, mode: "replace"\|"append" }` → load into that bot |
+| `DELETE /api/saved-queues/:id` | delete (only own or shared; not another user's private) |
+
+Ownership check on load/delete: allow if `ownerId === req.user.id` or `ownerId === SHARED_QUEUE_OWNER`; else 404 (no existence leak, matching the favorites pattern).
+
+### Chat commands (new, in `BotInstance.executeCommand`)
+
+- `!save <名称>` — save current queue → shared bucket.
+- `!load <名称>` — replace queue with a saved (shared) queue and play.
+- `!load -a <名称>` — append a saved (shared) queue to the end.
+- `!queues` — list shared saved queues (names + counts).
+
+All four reply **"此功能未启用"** when `savedQueuesEnabled` is false. Added to help text and the command table.
+
+### Load semantics (shared by web + chat)
+
+- **replace** — `queue.clear()`, add all stored songs, `queue.play()` + `resolveAndPlay(first)` (same shape as `cmdPlaylist`). Exits FM mode.
+- **append** — add all stored songs to the end; if idle, start the first newly-added one; never interrupts a playing track.
+- Loaded songs are re-tagged with a `requestedBy` of the loader (WebUI username / `游客` / chat `invokerName`) so play-history attribution stays correct (integrates with #121).
+
+### WebUI
+
+A new **"已保存队列 / Saved Queues"** page (nav entry visible only when `savedQueuesEnabled`):
+
+- **Save current queue**: name input + **共享** checkbox → `POST`.
+- Per entry (reusing `SongCard`/list styles): **Load** (replace), **Append**, **Delete**, showing name / song count / shared badge / owner.
+- Store/composable follows the existing `favorites` pattern.
+
+---
+
+## Feature 2 — Auto-restore live queue across restart (`savedQueuesEnabled`)
+
+Gated by the **same** `savedQueuesEnabled` flag (part of the "saved queues" feature).
+
+### Data model
+
+One row per bot (the live snapshot, continuously overwritten):
+
+```sql
+CREATE TABLE IF NOT EXISTS queue_state (
+  botId        TEXT PRIMARY KEY,
+  songs        TEXT NOT NULL,       -- JSON array of StoredSong
+  currentIndex INTEGER NOT NULL,
+  mode         TEXT NOT NULL,       -- PlayMode value
+  isFmMode     INTEGER NOT NULL DEFAULT 0,
+  fmPlatform   TEXT NOT NULL DEFAULT '',
+  updatedAt    TEXT NOT NULL DEFAULT (datetime('now'))
+);
+```
+
+DB methods: `saveQueueState(state)` (upsert), `getQueueState(botId)`, `clearQueueState(botId)`.
+
+### Snapshot (write path)
+
+- Add `PlayQueue.snapshot(): QueueSnapshot` and `PlayQueue.restore(snapshot)`.
+  - `snapshot` captures `songs` (minus url), `currentIndex`, `mode`.
+  - `restore` rebuilds `songs`, `currentIndex`, `mode`, and resets the derived `playedIndices`/`history`/`forwardStack` to a clean, consistent state for the restored index.
+- `BotInstance` writes the snapshot **debounced (~1 s)** on `stateChange` (queue mutations, track changes, and mode changes already emit `stateChange`). FM mode + fm platform captured alongside.
+- When the queue becomes empty (`clear()` with nothing re-added), the row is cleared via `clearQueueState`.
+
+### Restore (read path — "resume and play")
+
+When a bot reaches **connected/ready** (the same lifecycle point `autoStart` uses):
+
+1. If `savedQueuesEnabled` and a `queue_state` row exists → `PlayQueue.restore(...)`, restore FM mode/provider.
+2. If there was a current track → `resolveAndPlay(current)` (re-resolves URL, plays **from the track's start**).
+
+**Honest caveats (documented in README + spec):**
+
+- Resumes the **current track from its start**, not the exact millisecond (URLs are re-resolved; no persisted elapsed/seek).
+- **Spotify** auto-resume is **best-effort** — it depends on the sidecar/controller being back up; non-Spotify sources are reliable.
+- Resume only happens for bots that reach the connected state (auto-started, or on next manual start).
+
+---
+
+## Feature 3 — `playKeepsQueue` (independent single-play toggle)
+
+**Independent** config flag, **not** gated by `savedQueuesEnabled`. Default false → today's behavior.
+
+Affects **single-song immediate play only**: chat `!play <song | #N | id:<id> | URL>` and the WebUI play-now / play-by-id path.
+
+| `playKeepsQueue` | `!play <song>` behavior |
+| --- | --- |
+| `false` (default) | `queue.clear()` → play only that song (today) |
+| `true` | `addNext(song)` (insert after current) → `playAt(insertedAt)` (jump & play now) → `resolveAndPlay`; queue **kept**; on track-end, `next()` continues the queue |
+
+- Reuses existing `PlayQueue.addNext` + `playAt` — **no new queue logic.**
+- **Not** applied to collection loads — `!playlist` / `!album` / `!artist` / `!fm` still replace the queue (loading a collection is meant to replace; the request is about 单曲/single songs).
+- **Empty queue** → equivalent to a normal play (nothing to preserve).
+- **FM mode** → `!play` still exits FM (manual takeover), but existing queued songs are preserved and continue after the single song (auto-refill stops because FM is off). Documented.
+
+---
+
+## Config
+
+Add to `BotConfig` (in `src/data/config.ts`), both **default false**, both sanitized on load exactly like `localAudioEnabled` / `autoPauseOnEmpty` (so a hand-edited / legacy / corrupt `config.json` can never silently enable them):
+
+```ts
+savedQueuesEnabled: boolean;  // default false — gates Features 1 & 2 (admin-controlled)
+playKeepsQueue: boolean;      // default false — independent (Feature 3)
+```
+
+- Set via **Settings → 行为设置** (the existing admin behavior-settings surface, written through `POST /api/bot/settings`).
+- When `savedQueuesEnabled` is false: chat save/load/queues reply "此功能未启用"; `/api/saved-queues/*` return 403/404; the WebUI page/nav is hidden; no snapshotting; no auto-restore.
+
+## Error handling & edge cases
+
+- Corrupt `songs` JSON blob → treated as empty list; never throws into a route or the restore path.
+- Save with a duplicate name → upsert (overwrite), not an error.
+- Load/delete of a non-owned private queue → 404.
+- Caps exceeded → 4xx with a clear message (web) / friendly reply (chat).
+- Snapshot writes are best-effort and debounced; a DB write failure logs and never interrupts playback.
+- Restore of a Spotify-containing queue → best-effort per source; failures skip to next (existing `resolveAndPlay` skip behavior).
+
+## Testing (TDD)
+
+- **DB:** `saveQueue` upsert + caps; `listSavedQueues` own vs shared; `getSavedQueue`/`deleteSavedQueue`; ownership; `queue_state` upsert/get/clear; JSON round-trip + corrupt-blob degradation.
+- **PlayQueue:** `snapshot`/`restore` round-trip (songs, index, mode; derived state consistent).
+- **BotInstance:** `!save`/`!load`/`!load -a`/`!queues`; feature-disabled replies; snapshot-on-stateChange (debounced); resume-on-ready; `playKeepsQueue` insert-and-jump vs clear; collections still replace; FM interaction.
+- **Web API:** auth + capability + feature-gate (403/404); save (own/shared); load replace/append; delete ownership; caps.
+- **Config:** defaults false; load sanitization (legacy/corrupt/non-boolean → false).
+- **Frontend:** Saved Queues page (save w/ shared toggle, load, append, delete, hidden when disabled); store/composable.
+- Then: full suite (`npx vitest run --no-file-parallelism`) + `npx tsc --noEmit` + `cd web && npm run build`.
+
+## Rollout / staging
+
+Implement in stages (each independently valuable, all default-off):
+
+1. **Config + gates** — `savedQueuesEnabled`, `playKeepsQueue`, sanitization, Settings UI.
+2. **Feature 3** — `playKeepsQueue` single-play behavior (small, self-contained).
+3. **Feature 1** — named save/load (DB → API → chat → WebUI page).
+4. **Feature 2** — live-queue snapshot + resume-on-restart.
+5. **Docs** — README (commands, toggles, caveats).

package.json

@@ -3,10 +3,15 @@
   "version": "0.1.0",
   "description": "TeamSpeak music bot with NetEase Cloud Music and QQ Music support",
   "type": "module",
+  "engines": {
+    "node": "^22.12.0 || >=24.0.0"
+  },
   "scripts": {
     "dev": "tsx watch src/index.ts",
     "build": "tsc && npm run build:web",
     "build:web": "cd web && npm run build",
+    "check:native": "node scripts/check-native.mjs",
+    "prestart": "node scripts/check-native.mjs",
     "start": "node dist/index.js",
     "play": "node dist/index.js",
     "test": "vitest run",
@@ -15,30 +20,45 @@
   "license": "MIT",
   "dependencies": {
     "@discordjs/opus": "^0.10.0",
-    "@honeybbq/teamspeak-client": "^0.1.0",
+    "@honeybbq/teamspeak-client": "^0.2.1",
     "@koa/router": "^15.4.0",
-    "@sansenjian/qq-music-api": "^2.2.9",
+    "@sansenjian/qq-music-api": "~2.4.0",
     "axios": "^1.14.0",
+    "bcryptjs": "^2.4.3",
     "better-sqlite3": "^12.8.0",
     "chalk": "^5.6.2",
+    "cookie-parser": "^1.4.7",
     "express": "^5.2.1",
     "ffmpeg-static": "^5.3.0",
     "koa": "^3.2.0",
     "koa-bodyparser": "^4.4.1",
     "koa-static": "^5.0.0",
-    "NeteaseCloudMusicApi": "^4.30.0",
+    "NeteaseCloudMusicApi": "~4.32.0",
     "pino": "^10.3.1",
     "ts3-nodejs-library": "^3.5.1",
     "tweetnacl": "^1.0.3",
-    "ws": "^8.20.0"
+    "ws": "^8.20.0",
+    "yt-dlp-wrap": "^2.3.12"
   },
   "devDependencies": {
+    "@types/bcryptjs": "^2.4.6",
     "@types/better-sqlite3": "^7.6.13",
+    "@types/cookie-parser": "^1.4.10",
     "@types/express": "^5.0.6",
     "@types/node": "^25.5.0",
+    "@types/supertest": "^6.0.3",
     "@types/ws": "^8.18.1",
+    "supertest": "^7.2.2",
     "tsx": "^4.21.0",
     "typescript": "^6.0.2",
     "vitest": "^4.1.2"
+  },
+  "allowScripts": {
+    "@discordjs/opus@0.10.0": true,
+    "better-sqlite3@12.11.1": true,
+    "cpu-features@0.0.10": true,
+    "esbuild@0.28.1": true,
+    "ffmpeg-static@5.3.0": true,
+    "ssh2@1.17.0": true
   }
 }

pr57.diff

@@ -0,0 +1,591 @@
+diff --git a/src/music/netease.test.ts b/src/music/netease.test.ts
+index b2adb3d..ecc2202 100644
+--- a/src/music/netease.test.ts
++++ b/src/music/netease.test.ts
+@@ -1,5 +1,5 @@
+ import { describe, it, expect } from "vitest";
+-import { parseLyrics } from "./netease.js";
++import { parseLyrics, mapNeteaseAlbums } from "./netease.js";
+ 
+ describe("NetEase adapter", () => {
+   it("parses LRC format lyrics", () => {
+@@ -28,4 +28,32 @@ describe("NetEase adapter", () => {
+     expect(lines[0].text).toBe("Hello world");
+     expect(lines[0].translation).toBe("你好世界");
+   });
++
++  it("mapNeteaseAlbums maps raw cloudsearch albums to Album shape", () => {
++    const raw = [
++      {
++        id: 42,
++        name: "Album A",
++        picUrl: "https://x/p.jpg",
++        artists: [{ name: "Artist X" }, { name: "Featured Y" }],
++        size: 12,
++      },
++      {
++        id: 99,
++        name: "Album B",
++        picUrl: "",
++        artists: [],
++      },
++    ];
++    expect(mapNeteaseAlbums(raw)).toEqual([
++      { id: "42", name: "Album A", artist: "Artist X / Featured Y", coverUrl: "https://x/p.jpg", songCount: 12, platform: "netease" },
++      { id: "99", name: "Album B", artist: "", coverUrl: "", songCount: 0, platform: "netease" },
++    ]);
++  });
++
++  it("mapNeteaseAlbums returns [] for empty/null input", () => {
++    expect(mapNeteaseAlbums([])).toEqual([]);
++    expect(mapNeteaseAlbums(null as any)).toEqual([]);
++    expect(mapNeteaseAlbums(undefined as any)).toEqual([]);
++  });
+ });
+diff --git a/src/music/netease.ts b/src/music/netease.ts
+index 8aaeab6..4a863db 100644
+--- a/src/music/netease.ts
++++ b/src/music/netease.ts
+@@ -8,6 +8,7 @@ import type {
+   SearchResult,
+   QrCodeResult,
+   AuthStatus,
++  Album,
+ } from "./provider.js";
+ 
+ export function parseLyrics(lrc: string, tlyric?: string): LyricLine[] {
+@@ -55,6 +56,18 @@ export function parseLyrics(lrc: string, tlyric?: string): LyricLine[] {
+   return lines.sort((a, b) => a.time - b.time);
+ }
+ 
++export function mapNeteaseAlbums(raw: any[] | null | undefined): Album[] {
++  if (!Array.isArray(raw)) return [];
++  return raw.map((a) => ({
++    id: String(a.id),
++    name: a.name ?? "",
++    artist: (a.artists ?? []).map((x: any) => x.name).join(" / "),
++    coverUrl: a.picUrl ?? "",
++    songCount: a.size ?? 0,
++    platform: "netease",
++  }));
++}
++
+ // NetEase quality levels: standard(128k) higher(192k) exhigh(320k) lossless(flac) hires(hi-res) jyeffect jymaster
+ export const NETEASE_QUALITY_LEVELS = [
+   { value: "standard", label: "标准 (128kbps)", bitrate: 128 },
+@@ -91,7 +104,7 @@ export class NeteaseProvider implements MusicProvider {
+   }
+ 
+   async search(query: string, limit = 20): Promise<SearchResult> {
+-    const [songRes, playlistRes] = await Promise.all([
++    const [songRes, playlistRes, albumRes] = await Promise.all([
+       this.api.get("/cloudsearch", {
+         params: { keywords: query, type: 1, limit, ...this.cookieParams },
+       }),
+@@ -103,6 +116,9 @@ export class NeteaseProvider implements MusicProvider {
+           ...this.cookieParams,
+         },
+       }),
++      this.api.get("/cloudsearch", {
++        params: { keywords: query, type: 10, limit: 5, ...this.cookieParams },
++      }),
+     ]);
+ 
+     const songs: Song[] = (songRes.data?.result?.songs ?? []).map(
+@@ -127,7 +143,9 @@ export class NeteaseProvider implements MusicProvider {
+       platform: "netease",
+     }));
+ 
+-    return { songs, playlists, albums: [] };
++    const albums = mapNeteaseAlbums(albumRes.data?.result?.albums);
++
++    return { songs, playlists, albums };
+   }
+ 
+   async getSongUrl(songId: string, quality?: string): Promise<string | null> {
+diff --git a/src/music/qq.test.ts b/src/music/qq.test.ts
+new file mode 100644
+index 0000000..4f606cf
+--- /dev/null
++++ b/src/music/qq.test.ts
+@@ -0,0 +1,43 @@
++import { describe, it, expect } from "vitest";
++import { mapQqAlbums } from "./qq.js";
++
++describe("QQ adapter", () => {
++  it("mapQqAlbums maps albumMID-style raw entries", () => {
++    const raw = [
++      {
++        albumMID: "abc",
++        albumName: "Aero",
++        singerName: "Singer A",
++      },
++      {
++        albumMID: "xyz",
++        albumName: "Beta",
++        singer: [{ name: "Singer B" }, { name: "Singer C" }],
++      },
++    ];
++    const out = mapQqAlbums(raw);
++    expect(out).toHaveLength(2);
++    expect(out[0]).toMatchObject({
++      id: "abc",
++      name: "Aero",
++      artist: "Singer A",
++      platform: "qq",
++    });
++    expect(out[0].coverUrl).toContain("T002R300x300M000abc.jpg");
++    expect(out[1].artist).toBe("Singer B / Singer C");
++    expect(out[1].coverUrl).toContain("xyz");
++  });
++
++  it("mapQqAlbums returns [] for empty/null input", () => {
++    expect(mapQqAlbums([])).toEqual([]);
++    expect(mapQqAlbums(null as any)).toEqual([]);
++    expect(mapQqAlbums(undefined as any)).toEqual([]);
++  });
++
++  it("mapQqAlbums falls back to albumPic when no albumMID", () => {
++    const raw = [{ albumName: "C", albumPic: "https://x/p.jpg", singerName: "S" }];
++    const out = mapQqAlbums(raw);
++    expect(out[0].coverUrl).toBe("https://x/p.jpg");
++    expect(out[0].id).toBe("");
++  });
++});
+diff --git a/src/music/qq.ts b/src/music/qq.ts
+index 9c0360d..1e7a8ae 100644
+--- a/src/music/qq.ts
++++ b/src/music/qq.ts
+@@ -8,6 +8,7 @@ import type {
+   SearchResult,
+   QrCodeResult,
+   AuthStatus,
++  Album,
+ } from "./provider.js";
+ import { parseLyrics } from "./netease.js";
+ 
+@@ -27,6 +28,26 @@ const qqFavApi = axios.create({
+   headers: { referer: "https://y.qq.com/" },
+ });
+ 
++export function mapQqAlbums(raw: any[] | null | undefined): Album[] {
++  if (!Array.isArray(raw)) return [];
++  return raw.map((a) => {
++    const id = String(a.albumMID ?? a.mid ?? a.albumID ?? "");
++    const artist = a.singerName
++      ?? (Array.isArray(a.singer) ? a.singer.map((s: any) => s.name).join(" / ") : "");
++    const coverUrl = id
++      ? `https://y.gtimg.cn/music/photo_new/T002R300x300M000${id}.jpg`
++      : (a.albumPic ?? "");
++    return {
++      id,
++      name: a.albumName ?? a.title ?? "",
++      artist,
++      coverUrl,
++      songCount: a.song_count ?? a.songCount ?? 0,
++      platform: "qq" as const,
++    };
++  });
++}
++
+ function computeGtk(pSkey: string): number {
+   let hash = 5381;
+   for (let i = 0; i < pSkey.length; i++) {
+@@ -65,11 +86,12 @@ export class QQMusicProvider implements MusicProvider {
+       req_0: {
+         module: "music.search.SearchCgiService",
+         method: "DoSearchForQQMusicDesktop",
+-        param: {
+-          searchid: "1",
+-          query,
+-          num_per_page: Math.min(limit, 50),
+-        },
++        param: { searchid: "1", query, num_per_page: Math.min(limit, 50), search_type: 0 },
++      },
++      req_album: {
++        module: "music.search.SearchCgiService",
++        method: "DoSearchForQQMusicDesktop",
++        param: { searchid: "1", query, num_per_page: 5, search_type: 8 },
+       },
+     });
+     const res = await qqDirectApi.get("/cgi-bin/musicu.fcg", {
+@@ -90,7 +112,10 @@ export class QQMusicProvider implements MusicProvider {
+       platform: "qq",
+     }));
+ 
+-    return { songs, playlists: [], albums: [] };
++    const albumList: any[] = res.data?.req_album?.data?.body?.album?.list ?? [];
++    const albums = mapQqAlbums(albumList);
++
++    return { songs, playlists: [], albums };
+   }
+ 
+   async getSongUrl(songId: string, quality?: string): Promise<string | null> {
+diff --git a/src/web/api/music.ts b/src/web/api/music.ts
+index b08f9a2..edf9c04 100644
+--- a/src/web/api/music.ts
++++ b/src/web/api/music.ts
+@@ -52,14 +52,20 @@ export function createMusicRouter(
+       ]);
+ 
+       const songs = [
+-        ...(neteaseResult.status === "fulfilled"
+-          ? neteaseResult.value.songs
+-          : []),
++        ...(neteaseResult.status === "fulfilled" ? neteaseResult.value.songs : []),
+         ...(qqResult.status === "fulfilled" ? qqResult.value.songs : []),
+         ...(bilibiliResult.status === "fulfilled" ? bilibiliResult.value.songs : []),
+       ];
++      const albums = [
++        ...(neteaseResult.status === "fulfilled" ? neteaseResult.value.albums : []),
++        ...(qqResult.status === "fulfilled" ? qqResult.value.albums : []),
++      ];
++      const playlists = [
++        ...(neteaseResult.status === "fulfilled" ? neteaseResult.value.playlists : []),
++        ...(qqResult.status === "fulfilled" ? qqResult.value.playlists : []),
++      ];
+ 
+-      res.json({ songs });
++      res.json({ songs, albums, playlists });
+     } catch (err) {
+       logger.error({ err }, "Unified search failed");
+       res.status(500).json({ error: (err as Error).message });
+diff --git a/src/web/api/player.ts b/src/web/api/player.ts
+index a9af600..4f0930b 100644
+--- a/src/web/api/player.ts
++++ b/src/web/api/player.ts
+@@ -313,6 +313,78 @@ export function createPlayerRouter(
+     }
+   });
+ 
++  // Play an album by ID — mirrors play-playlist but calls getAlbumSongs
++  router.post("/:botId/play-album", async (req, res) => {
++    try {
++      const bot = (req as any).bot;
++      const { albumId, platform } = req.body;
++      const provider = bot.getProviderFor(
++        platform === "bilibili" || platform === "qq" || platform === "youtube"
++          ? platform
++          : "netease"
++      );
++
++      // Stop current playback
++      bot.getPlayer().stop();
++      bot.getPlayer().resetFailures();
++
++      const songs = await provider.getAlbumSongs(albumId);
++      if (songs.length === 0) {
++        res.json({ message: "Album is empty" });
++        return;
++      }
++
++      // QQ-specific optimization: batch-resolve playable IDs to avoid
++      // wasting retries on region/copyright-restricted tracks.
++      let queueable: { id: string }[] = songs;
++      const totalCount = songs.length;
++      const qqLike = provider as { getPlayableSongIds?: (ids: string[]) => Promise<Set<string> | null> };
++      if (typeof qqLike.getPlayableSongIds === "function") {
++        const playable = await qqLike.getPlayableSongIds(songs.map((s: { id: string }) => s.id));
++        if (playable !== null) {
++          queueable = songs.filter((s: { id: string }) => playable.has(s.id));
++        }
++      }
++      if (queueable.length === 0) {
++        res.json({ ok: false, message: `专辑 ${totalCount} 首歌曲均无版权可播放（区域/版权限制）` });
++        return;
++      }
++
++      const queue = bot.getQueueManager();
++      queue.clear();
++      for (const song of queueable) {
++        queue.add({ ...song, platform: provider.platform });
++      }
++
++      const mode = queue.getMode();
++      let first;
++      if (mode === "random" || mode === "rloop") {
++        const idx = Math.floor(Math.random() * queue.size());
++        first = queue.playAt(idx);
++      } else {
++        first = queue.play();
++      }
++
++      let started = first ? await bot.resolveAndPlay(first) : false;
++      if (first && !started) {
++        started = await bot.playNext(20);
++      }
++
++      const playing = queue.current();
++      const loadedMsg = queueable.length < totalCount
++        ? `已加载 ${queueable.length}/${totalCount} 首（其余区域/版权限制）`
++        : `已加载 ${queueable.length} 首`;
++      if (started && playing) {
++        res.json({ ok: true, message: `${loadedMsg}，正在播放：${playing.name}` });
++      } else {
++        res.json({ ok: false, message: `${loadedMsg}，但无法开始播放。` });
++      }
++    } catch (err) {
++      logger.error({ err }, "play-album failed");
++      res.status(500).json({ error: (err as Error).message });
++    }
++  });
++
+   // Play a single song by ID — resolves URL on demand
+   router.post("/:botId/play-song", async (req, res) => {
+     try {
+diff --git a/web/src/router/index.ts b/web/src/router/index.ts
+index cc060f5..d62afcd 100644
+--- a/web/src/router/index.ts
++++ b/web/src/router/index.ts
+@@ -22,6 +22,13 @@ const router = createRouter({
+       path: '/playlist/:id',
+       name: 'playlist',
+       component: () => import('../views/Playlist.vue'),
++      meta: { kind: 'playlist' },
++    },
++    {
++      path: '/album/:id',
++      name: 'album',
++      component: () => import('../views/Playlist.vue'),
++      meta: { kind: 'album' },
+     },
+     {
+       path: '/lyrics',
+diff --git a/web/src/stores/player.ts b/web/src/stores/player.ts
+index 9bc817d..083262c 100644
+--- a/web/src/stores/player.ts
++++ b/web/src/stores/player.ts
+@@ -322,6 +322,16 @@ export const usePlayerStore = defineStore('player', {
+       this._syncAfterAction();
+     },
+ 
++    async playAlbum(albumId: string, platform = 'netease') {
++      if (!this.activeBotId) return;
++      const res = await axios.post(`/api/player/${this.activeBotId}/play-album`, { albumId, platform });
++      if (res.data?.message) {
++        this.notify(res.data.message, res.data.ok === false ? 'error' : 'info');
++      }
++      this._setTiming(this.activeBotId, { serverElapsed: 0 });
++      this._syncAfterAction();
++    },
++
+     async pause() {
+       if (!this.activeBotId) return;
+       // Freeze elapsed at current interpolated value
+diff --git a/web/src/views/Playlist.vue b/web/src/views/Playlist.vue
+index d5c9f8d..d00101d 100644
+--- a/web/src/views/Playlist.vue
++++ b/web/src/views/Playlist.vue
+@@ -38,7 +38,7 @@
+       </div>
+     </template>
+ 
+-    <div v-else class="loading">歌单不存在或加载失败</div>
++    <div v-else class="loading">{{ kind === 'album' ? '专辑' : '歌单' }}不存在或加载失败</div>
+   </div>
+ </template>
+ 
+@@ -64,6 +64,8 @@ interface PlaylistDetail {
+   songCount: number;
+ }
+ 
++const kind = (route.meta.kind as string) ?? 'playlist'; // 'playlist' | 'album'
++
+ const playlist = ref<PlaylistDetail | null>(null);
+ const songs = ref<Song[]>([]);
+ const loading = ref(true);
+@@ -71,20 +73,32 @@ const loading = ref(true);
+ async function playAll() {
+   const id = route.params.id as string;
+   const platform = (route.query.platform as string) || 'netease';
+-  await store.playPlaylist(id, platform);
++  if (kind === 'album') {
++    await store.playAlbum(id, platform);
++  } else {
++    await store.playPlaylist(id, platform);
++  }
+ }
+ 
+ onMounted(async () => {
+   const id = route.params.id as string;
+   const platform = (route.query.platform as string) || 'netease';
+ 
++  const detailUrl = kind === 'album'
++    ? `/api/music/album/${id}/detail`
++    : `/api/music/playlist/${id}/detail`;
++  const songsUrl = kind === 'album'
++    ? `/api/music/album/${id}`
++    : `/api/music/playlist/${id}`;
++
+   // allSettled, not Promise.all — if detail 404s but songs is fine
+   // (e.g., a QQ playlist whose detail endpoint flaked but the song
+   // list resolved), we still want to show the songs rather than
+-  // the "歌单不存在" empty state.
++  // the "不存在" empty state. For albums, detail always 404s — that
++  // is intentional; the fallback stub below handles it.
+   const [detailRes, songsRes] = await Promise.allSettled([
+-    axios.get(`/api/music/playlist/${id}/detail`, { params: { platform } }),
+-    axios.get(`/api/music/playlist/${id}`, { params: { platform } }),
++    axios.get(detailUrl, { params: { platform } }),
++    axios.get(songsUrl, { params: { platform } }),
+   ]);
+ 
+   const detail = detailRes.status === 'fulfilled' ? detailRes.value.data?.playlist : null;
+@@ -96,7 +110,7 @@ onMounted(async () => {
+     // Fall back to a stub built from the route + first song's cover.
+     playlist.value = {
+       id,
+-      name: '歌单',
++      name: kind === 'album' ? '专辑' : '歌单',
+       description: '',
+       coverUrl: songList[0]?.coverUrl ?? '',
+       songCount: songList.length,
+@@ -104,7 +118,7 @@ onMounted(async () => {
+   } else {
+     playlist.value = null;
+     if (detailRes.status === 'rejected') {
+-      console.error('Failed to load playlist detail:', (detailRes.reason as any)?.response?.status, (detailRes.reason as any)?.message);
++      console.error('Failed to load detail:', (detailRes.reason as any)?.response?.status, (detailRes.reason as any)?.message);
+     }
+   }
+   songs.value = songList;
+diff --git a/web/src/views/Search.vue b/web/src/views/Search.vue
+index 0536e36..8822277 100644
+--- a/web/src/views/Search.vue
++++ b/web/src/views/Search.vue
+@@ -20,22 +20,54 @@
+ 
+     <div v-if="loading" class="loading">搜索中...</div>
+ 
+-    <div v-else-if="results.length > 0" class="results">
+-      <SongCard
+-        v-for="(song, i) in results"
+-        :key="`${song.platform}-${song.id}`"
+-        :song="song"
+-        :index="i + 1"
+-        :active="store.currentSong?.id === song.id"
+-        @play="store.playSong(song)"
+-        @playNext="store.playNextSong(song)"
+-        @add="store.addSong(song)"
+-      />
+-    </div>
++    <template v-else-if="songs.length || albums.length || playlists.length">
++      <section v-if="albums.length" class="result-section">
++        <h2 class="section-title">专辑</h2>
++        <div class="card-grid">
++          <router-link
++            v-for="al in albums"
++            :key="`${al.platform}-${al.id}`"
++            :to="`/album/${al.id}?platform=${al.platform}`"
++            class="card hover-scale"
++          >
++            <CoverArt :url="al.coverUrl" :size="160" :radius="10" :show-shadow="true" />
++            <div class="card-name">{{ al.name }}</div>
++            <div class="card-sub">{{ al.artist }}</div>
++          </router-link>
++        </div>
++      </section>
++
++      <section v-if="playlists.length" class="result-section">
++        <h2 class="section-title">歌单</h2>
++        <div class="card-grid">
++          <router-link
++            v-for="pl in playlists"
++            :key="`${pl.platform}-${pl.id}`"
++            :to="`/playlist/${pl.id}?platform=${pl.platform}`"
++            class="card hover-scale"
++          >
++            <CoverArt :url="pl.coverUrl" :size="160" :radius="10" :show-shadow="true" />
++            <div class="card-name">{{ pl.name }}</div>
++          </router-link>
++        </div>
++      </section>
++
++      <section v-if="songs.length" class="result-section">
++        <h2 class="section-title">单曲</h2>
++        <SongCard
++          v-for="(song, i) in songs"
++          :key="`${song.platform}-${song.id}`"
++          :song="song"
++          :index="i + 1"
++          :active="store.currentSong?.id === song.id"
++          @play="store.playSong(song)"
++          @playNext="store.playNextSong(song)"
++          @add="store.addSong(song)"
++        />
++      </section>
++    </template>
+ 
+-    <div v-else-if="searched" class="empty">
+-      未找到相关结果
+-    </div>
++    <div v-else-if="searched" class="empty">未找到相关结果</div>
+   </div>
+ </template>
+ 
+@@ -45,15 +77,21 @@ import { useRoute } from 'vue-router';
+ import { Icon } from '@iconify/vue';
+ import axios from 'axios';
+ import { usePlayerStore } from '../stores/player.js';
++import type { Song } from '../stores/player.js';
+ import SongCard from '../components/SongCard.vue';
++import CoverArt from '../components/CoverArt.vue';
+ 
+ const store = usePlayerStore();
+ const route = useRoute();
+ 
+ const query = ref((route.query.q as string) || '');
+-import { Song } from '../stores/player.js';
+ 
+-const results = ref<Song[]>([]);
++interface Album { id: string; name: string; artist: string; coverUrl: string; songCount?: number; platform: string; }
++interface Playlist { id: string; name: string; coverUrl: string; songCount?: number; platform: string; }
++
++const songs = ref<Song[]>([]);
++const albums = ref<Album[]>([]);
++const playlists = ref<Playlist[]>([]);
+ const loading = ref(false);
+ const searched = ref(false);
+ 
+@@ -62,12 +100,12 @@ async function doSearch() {
+   loading.value = true;
+   searched.value = true;
+   try {
+-    const res = await axios.get('/api/music/search/all', {
+-      params: { q: query.value },
+-    });
+-    results.value = res.data.songs;
++    const res = await axios.get('/api/music/search/all', { params: { q: query.value } });
++    songs.value = res.data.songs ?? [];
++    albums.value = res.data.albums ?? [];
++    playlists.value = res.data.playlists ?? [];
+   } catch {
+-    results.value = [];
++    songs.value = []; albums.value = []; playlists.value = [];
+   } finally {
+     loading.value = false;
+   }
+@@ -141,4 +179,23 @@ onMounted(() => {
+   flex-direction: column;
+   gap: 2px;
+ }
++
++.result-section {
++  margin-bottom: 32px;
++  .section-title { font-size: 18px; margin: 0 0 12px; opacity: 0.85; }
++}
++.card-grid {
++  display: grid;
++  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
++  gap: 16px;
++}
++.card {
++  display: flex;
++  flex-direction: column;
++  gap: 6px;
++  text-decoration: none;
++  color: inherit;
++  .card-name { font-size: 14px; line-height: 1.3; max-height: 2.6em; overflow: hidden; }
++  .card-sub  { font-size: 12px; opacity: 0.6; }
++}
+ </style>

scripts/check-native.mjs

@@ -0,0 +1,155 @@
+#!/usr/bin/env node
+
+/**
+ * Preflight: can THIS Node build actually load the native modules that are
+ * sitting in node_modules?
+ *
+ * A compiled addon is tied to one Node ABI (process.versions.modules:
+ * Node 20 = 115, Node 22 = 127, Node 24 = 137). Install under one Node major,
+ * launch under another, and the bot dies deep inside startup with a
+ * `NODE_MODULE_VERSION ...` stack that says nothing about how to fix it.
+ * This script turns that into one actionable sentence, before anything starts.
+ *
+ * Exit code:
+ *   0  every required native module loads (or is simply not installed yet —
+ *      that is npm install's problem, not an ABI problem)
+ *   1  a required native module definitively fails to load; the bot could not
+ *      have started anyway, so there is no false-positive risk here.
+ *
+ * Usage: node scripts/check-native.mjs
+ */
+
+import { execFileSync } from "node:child_process";
+import { existsSync, readFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { createLineWriter } from "./lib/console-log.mjs";
+
+const ROOT = join(dirname(fileURLToPath(import.meta.url)), "..");
+const NODE_MODULES = join(ROOT, "node_modules");
+const STAMP_FILE = join(NODE_MODULES, ".tsmusicbot-abi");
+const NODE_ABI = process.versions.modules;
+
+/** Only the modules the bot cannot start without. ffmpeg-static is optional
+ *  (a system ffmpeg on PATH works too), so it is not checked here. */
+const REQUIRED = ["@discordjs/opus", "better-sqlite3"];
+
+function pkgDirOf(spec) {
+  return join(NODE_MODULES, ...spec.split("/"));
+}
+
+function summarizeError(text) {
+  const lines = String(text || "")
+    .split(/\r?\n/)
+    .map((l) => l.trim())
+    .filter(Boolean);
+  const interesting = lines.find((l) => /NODE_MODULE_VERSION|Error:|error:/.test(l));
+  return (interesting || lines[0] || "unknown error").slice(0, 300);
+}
+
+/**
+ * The snippet that actually forces each package's addon to be dlopen()ed.
+ * NOTE: better-sqlite3 loads its .node lazily, inside the Database constructor,
+ * so a bare `require('better-sqlite3')` succeeds even against a wrong-ABI
+ * binary. Opening an in-memory database is the cheapest way to really load it.
+ */
+const PROBE_EXPR = {
+  "@discordjs/opus": "require('@discordjs/opus')",
+  "better-sqlite3": "new (require('better-sqlite3'))(':memory:').close()",
+};
+
+/**
+ * Load-probe in a throwaway child process. Child process on purpose: requiring
+ * an addon in this process would keep the DLL mapped, and Windows then refuses
+ * to let setup.bat replace the file we just told the user to replace.
+ */
+function probeRequire(spec) {
+  const expr = PROBE_EXPR[spec] || `require(${JSON.stringify(spec)})`;
+  try {
+    execFileSync(process.execPath, ["-e", expr], {
+      cwd: ROOT,
+      stdio: "pipe",
+      timeout: 120000,
+      windowsHide: true,
+    });
+    return { ok: true };
+  } catch (err) {
+    const text = [err.stderr && err.stderr.toString(), err.message].filter(Boolean).join("\n");
+    // "...compiled against ... NODE_MODULE_VERSION 137. This version of Node.js
+    //  requires NODE_MODULE_VERSION 127..." -> first number is the build target.
+    const abis = [...text.matchAll(/NODE_MODULE_VERSION (\d+)/g)].map((m) => m[1]);
+    return {
+      ok: false,
+      abiMismatch: abis.length >= 2,
+      compiledAbi: abis.length >= 2 ? abis[0] : null,
+      error: summarizeError(text),
+    };
+  }
+}
+
+function readStamp() {
+  try {
+    return JSON.parse(readFileSync(STAMP_FILE, "utf8"));
+  } catch {
+    return null;
+  }
+}
+
+const setupCmd = process.platform === "win32" ? "scripts\\setup.bat" : "bash scripts/setup.sh";
+
+const broken = [];
+for (const spec of REQUIRED) {
+  if (!existsSync(pkgDirOf(spec))) continue; // not installed yet -> npm install's job
+  const probe = probeRequire(spec);
+  if (!probe.ok) broken.push({ spec, ...probe });
+}
+
+function report() {
+  const stamp = readStamp();
+  const mismatch = broken.find((b) => b.abiMismatch);
+  // Never let a failed console write become an uncaught error and replace this
+  // report with a stack trace - the console that cannot print the Chinese half
+  // of these lines is exactly the one a user needs the English half from.
+  // See scripts/lib/console-log.mjs and issue #152.
+  const out = createLineWriter(process.stderr);
+
+  out("");
+  out("============================================================");
+  if (mismatch) {
+    out("  [ERROR] 原生模块与当前 Node 版本不匹配");
+    out("          Native modules do not match this Node version");
+  } else {
+    out("  [ERROR] 原生模块无法加载 / native module failed to load");
+  }
+  out("============================================================");
+  out(`  本机 Node / running Node : ${process.version}  (ABI ${NODE_ABI})`);
+  if (stamp && stamp.abi) {
+    out(`  安装时 Node / built with : ${stamp.nodeVersion || "?"}  (ABI ${stamp.abi})`);
+    out(`                             ← node_modules/.tsmusicbot-abi, ${stamp.updatedAt || "?"}`);
+  }
+  out("");
+  for (const b of broken) {
+    if (b.abiMismatch) {
+      out(`  x ${b.spec}: 本机 Node ${process.version} (ABI ${NODE_ABI}),`);
+      out(`      但 node_modules 里的原生模块是给 ABI ${b.compiledAbi} 编译的。`);
+      out(`      built for ABI ${b.compiledAbi}, this Node needs ABI ${NODE_ABI}.`);
+    } else {
+      out(`  x ${b.spec}: ${b.error}`);
+    }
+  }
+  out("");
+  out("  怎么修 / How to fix:");
+  out(`    1) 重新运行安装脚本 / re-run setup:  ${setupCmd}`);
+  out("       (它会自动为当前 Node 版本重新安装原生模块)");
+  out("       (setup now repairs the native modules for whatever Node you run)");
+  out("    2) 或者换回安装时用的 Node 版本 / or switch back to the Node version");
+  out("       you installed with, then start again.");
+  out("============================================================");
+  out("");
+}
+
+if (broken.length > 0) {
+  report();
+  // exitCode rather than exit(): lets the message flush when stderr is piped.
+  process.exitCode = 1;
+}

scripts/docker/Dockerfile

@@ -4,7 +4,7 @@
 # ==========================================
 
 # --- Stage 1: Build backend + frontend ---
-FROM node:20-slim AS builder
+FROM node:22-slim AS builder
 
 # Install build tools for native modules (opus, better-sqlite3)
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -25,30 +25,34 @@ RUN cd web && npm ci
 COPY . .
 RUN npm run build
 
-# --- Stage 2: Production image ---
-FROM node:20-slim
+# Install production dependencies (with native addons compiled) in the builder
+# so we don't need build tools in the production image.
+RUN rm -rf node_modules && npm ci --production && npm cache clean --force
 
-# Install only runtime native build tools (needed for native module rebuild)
+# --- Stage 2: Production image ---
+FROM node:22-slim
+
+# Install system FFmpeg — the ffmpeg-static npm package bundles a pre-compiled
+# binary that can SIGSEGV inside Docker (incompatible glibc / missing libs).
+# System-installed FFmpeg is always compatible with the container runtime.
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    python3 make g++ && \
+    ffmpeg && \
     rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 
-# Copy built output
+# Copy built output and pre-compiled production node_modules from builder
 COPY --from=builder /app/dist ./dist
 COPY --from=builder /app/web/dist ./web/dist
 COPY --from=builder /app/package*.json ./
-
-# Install production dependencies (includes ffmpeg-static, opus, sqlite3)
-# These need to compile native addons inside the container
-RUN npm ci --production && npm cache clean --force
-
-# Remove build tools to reduce image size
-RUN apt-get purge -y python3 make g++ && apt-get autoremove -y && \
-    rm -rf /var/lib/apt/lists/*
-
-# FFmpeg is bundled via ffmpeg-static — no system ffmpeg needed
+COPY --from=builder /app/node_modules ./node_modules
+# package.json declares a `prestart` preflight, so `npm start` inside the
+# container needs this file. The image's own CMD calls node directly and never
+# goes through npm, but an interactive `docker exec ... npm start` would
+# otherwise die on a missing script rather than starting the bot.
+COPY --from=builder /app/scripts/check-native.mjs ./scripts/check-native.mjs
+# ...and the module it imports for crash-proof logging.
+COPY --from=builder /app/scripts/lib/console-log.mjs ./scripts/lib/console-log.mjs
 
 # Data directory for database, cookies, logs
 RUN mkdir -p /app/data

scripts/docker/docker-compose.yml

@@ -1,14 +1,16 @@
 # TSMusicBot — Docker Compose
-# 一键部署：docker-compose up -d
+# 一键部署：docker-compose pull && docker-compose up -d
 #
-# 所有依赖已内置（Node.js, FFmpeg, Opus 编码器）
-# 无需安装任何额外软件
+# 默认从 GitHub Container Registry 拉取预构建镜像（amd64 + arm64），
+# 无需本地编译，无需 Node.js / 构建工具链。
+# 镜像内置：Node.js, FFmpeg, Opus 编码器，原生模块均已交叉编译。
+#
+# 如需指定版本，把 :latest 换成具体 tag（例如 :1.4.0）。
+# 如需本地构建（开发或 fork），见底部注释。
 
 services:
   tsmusicbot:
-    build:
-      context: ../..
-      dockerfile: scripts/docker/Dockerfile
+    image: ghcr.io/zhangtianyao1/teamspeak-music-bot:latest
     container_name: tsmusicbot
     # Use host network so the bot can reach TS3 server on LAN
     # If your TS3 server is on the same machine, this is required
@@ -27,3 +29,12 @@ services:
 volumes:
   tsmusicbot-data:
     driver: local
+
+# ------------------------------------------------------------------
+# 本地构建（仅开发 / fork 场景使用）：
+# 把上面的 `image:` 行删掉，换成下面的 build 块即可。
+#
+#     build:
+#       context: ../..
+#       dockerfile: scripts/docker/Dockerfile
+# ------------------------------------------------------------------

scripts/download-binaries.mjs

@@ -0,0 +1,751 @@
+#!/usr/bin/env node
+
+/**
+ * Verify / download / repair the native binaries used by TSMusicBot
+ * (ffmpeg-static + @discordjs/opus + better-sqlite3), preferring the
+ * npmmirror CDN so China users never have to reach GitHub.
+ *
+ * Called by setup.bat / setup.sh after `npm install --ignore-scripts`.
+ *
+ * WHY THIS IS NOT JUST A DOWNLOADER
+ * ---------------------------------
+ * A compiled addon only loads into the exact Node ABI it was built for
+ * (process.versions.modules: Node 20 = 115, Node 22 = 127, Node 24 = 137).
+ * better-sqlite3 stores its addon at an ABI-agnostic path
+ * (build/Release/better_sqlite3.node), so a "file exists and is big enough"
+ * check happily keeps a binary built for a *different* Node major around and
+ * the bot then dies with `NODE_MODULE_VERSION 137 ... requires 127`.
+ * So we validate by actually LOADING each package — in a short-lived child
+ * process, because on Windows a loaded .node stays mapped and the OS then
+ * refuses to delete or overwrite it.
+ *
+ * Every repair is staged and swapped in atomically: if a download fails we put
+ * the previous file back, so a failed run can never leave the install in a
+ * worse state than it started.
+ *
+ * Usage: node scripts/download-binaries.mjs [cdn_base_url]
+ * Env:   TSMB_BINARY_LOG_STDOUT=1  also echo progress to stdout
+ *        (setup.bat uses this to show progress live on stderr while stdout
+ *         is redirected into setup.log)
+ */
+
+import {
+  chmodSync,
+  createWriteStream,
+  existsSync,
+  mkdirSync,
+  mkdtempSync,
+  readdirSync,
+  readFileSync,
+  renameSync,
+  rmSync,
+  statSync,
+  writeFileSync,
+} from "node:fs";
+import { tmpdir } from "node:os";
+import { basename, dirname, join } from "node:path";
+import { createGunzip } from "node:zlib";
+import { pipeline } from "node:stream/promises";
+import { get } from "node:https";
+import { Readable } from "node:stream";
+import { execFileSync, execSync } from "node:child_process";
+import { createRequire } from "node:module";
+import { fileURLToPath } from "node:url";
+import { createLineWriter } from "./lib/console-log.mjs";
+
+const ROOT = join(dirname(fileURLToPath(import.meta.url)), "..");
+const NODE_MODULES = join(ROOT, "node_modules");
+const BACKUP_DIR = join(NODE_MODULES, ".tsmusicbot-backup");
+const STAMP_FILE = join(NODE_MODULES, ".tsmusicbot-abi");
+
+const CDN = process.argv[2] || "https://cdn.npmmirror.com/binaries";
+const PLATFORM = process.platform;
+const ARCH = process.arch;
+const NODE_ABI = process.versions.modules;
+const NODE_MAJOR = Number(process.versions.node.split(".")[0]);
+/** The newest Node major this project is regularly tested against, and the one
+ *  every required addon currently ships a prebuild for. Keep in sync with
+ *  TESTED_NODE_MAJOR in scripts/setup.bat. */
+const TESTED_NODE_MAJOR = 22;
+
+/** Modules the bot cannot start without. ffmpeg-static is optional: a system
+ *  ffmpeg on PATH is a documented fallback, so it only ever produces a WARN. */
+const REQUIRED = new Set(["@discordjs/opus", "better-sqlite3"]);
+
+/** ffmpeg-static ships ~40-90 MB depending on platform; anything under this is
+ *  certainly a truncated download, not a real build. */
+const FFMPEG_MIN_BYTES = 20 * 1024 * 1024;
+
+// ---------------------------------------------------------------------------
+// logging
+// ---------------------------------------------------------------------------
+
+// Progress goes to stderr so setup.bat can show it live while stdout is being
+// appended to setup.log. TSMB_BINARY_LOG_STDOUT=1 mirrors it into stdout so the
+// log keeps the full transcript too.
+const ECHO_STDOUT = process.env.TSMB_BINARY_LOG_STDOUT === "1";
+
+// Both writers swallow a failed write instead of letting it become an uncaught
+// 'error' event: a console that cannot print the Chinese half of a line (issue
+// #152) must not be able to abort a whole setup run. The two streams degrade
+// independently, so setup.log keeps the full bilingual transcript either way.
+const writeErr = createLineWriter(process.stderr);
+const writeOut = createLineWriter(process.stdout);
+
+function log(msg) {
+  const line = msg === "" ? "" : `  [binary] ${msg}`;
+  writeErr(line);
+  if (ECHO_STDOUT) writeOut(line);
+}
+
+// ---------------------------------------------------------------------------
+// small helpers
+// ---------------------------------------------------------------------------
+
+function sizeOf(filePath) {
+  try {
+    return statSync(filePath).size;
+  } catch {
+    return 0;
+  }
+}
+
+function humanSize(filePath) {
+  const bytes = sizeOf(filePath);
+  if (!bytes) return "unknown size";
+  return bytes >= 1024 * 1024
+    ? `${(bytes / 1024 / 1024).toFixed(1)} MB`
+    : `${(bytes / 1024).toFixed(0)} KB`;
+}
+
+function ensureExecutable(filePath) {
+  if (PLATFORM === "win32") return;
+  try {
+    chmodSync(filePath, 0o755);
+  } catch {
+    /* best effort */
+  }
+}
+
+/** Read the version actually present in node_modules (never hardcode it: the
+ *  lockfile can be far ahead of whatever version this script was written for,
+ *  and a wrong version means a 404 on the CDN). */
+function readInstalledVersion(spec) {
+  try {
+    const pkgJson = join(NODE_MODULES, ...spec.split("/"), "package.json");
+    const version = JSON.parse(readFileSync(pkgJson, "utf8")).version;
+    return typeof version === "string" && version ? version : null;
+  } catch {
+    return null;
+  }
+}
+
+function summarizeError(text) {
+  const lines = String(text || "")
+    .split(/\r?\n/)
+    .map((l) => l.trim())
+    .filter(Boolean);
+  const interesting = lines.find((l) => /NODE_MODULE_VERSION|Error:|error:/.test(l));
+  return (interesting || lines[0] || "unknown error").slice(0, 300);
+}
+
+// ---------------------------------------------------------------------------
+// download
+// ---------------------------------------------------------------------------
+
+function download(url, redirects = 0) {
+  return new Promise((resolve, reject) => {
+    const req = get(url, { timeout: 120000 }, (res) => {
+      const { statusCode, headers } = res;
+      if (statusCode >= 300 && statusCode < 400 && headers.location) {
+        res.resume();
+        if (redirects >= 5) {
+          reject(new Error(`too many redirects: ${url}`));
+          return;
+        }
+        resolve(download(new URL(headers.location, url).toString(), redirects + 1));
+        return;
+      }
+      if (statusCode < 200 || statusCode >= 300) {
+        res.resume();
+        reject(new Error(`HTTP ${statusCode}: ${url}`));
+        return;
+      }
+      const chunks = [];
+      res.on("data", (c) => chunks.push(c));
+      res.on("error", reject);
+      res.on("end", () => resolve(Buffer.concat(chunks)));
+    });
+    req.on("error", reject);
+    req.on("timeout", () => {
+      req.destroy();
+      reject(new Error(`timeout: ${url}`));
+    });
+  });
+}
+
+let tarModule = null;
+
+/** `tar` is not a declared dependency — it only resolves transitively through
+ *  prebuild-install / @discordjs/node-pre-gyp. Fail with a sentence a user can
+ *  act on instead of a raw MODULE_NOT_FOUND stack. */
+function loadTar() {
+  if (tarModule) return tarModule;
+  try {
+    tarModule = createRequire(import.meta.url)("tar");
+  } catch {
+    throw new Error(
+      "'tar' module not available / 找不到 tar 模块 — run `npm install tar` in the project root and retry",
+    );
+  }
+  return tarModule;
+}
+
+async function extractTarGz(buf, cwd) {
+  const tar = loadTar();
+  const tmpFile = join(tmpdir(), `tsmb-${process.pid}-${Date.now()}.tar.gz`);
+  writeFileSync(tmpFile, buf);
+  try {
+    await tar.extract({ cwd, file: tmpFile });
+  } finally {
+    try {
+      rmSync(tmpFile, { force: true });
+    } catch {
+      /* ignore */
+    }
+  }
+}
+
+// ---------------------------------------------------------------------------
+// load probe (the whole point of this rewrite)
+// ---------------------------------------------------------------------------
+
+/**
+ * The snippet that actually forces each package's addon to be dlopen()ed.
+ * NOTE: better-sqlite3 loads its .node lazily, inside the Database constructor
+ * (lib/database.js: `DEFAULT_ADDON || (DEFAULT_ADDON = require('bindings')(...))`),
+ * so a bare `require('better-sqlite3')` succeeds even against a wrong-ABI binary.
+ * Opening an in-memory database is the cheapest way to really load it.
+ */
+const PROBE_EXPR = {
+  "@discordjs/opus": "require('@discordjs/opus')",
+  "better-sqlite3": "new (require('better-sqlite3'))(':memory:').close()",
+};
+
+/**
+ * Try to load a package in a throwaway child process.
+ * Child process on purpose: loading an addon here would keep the DLL mapped and
+ * Windows would then refuse to rename/delete the file we are about to replace.
+ */
+function probeRequire(spec) {
+  const expr = PROBE_EXPR[spec] || `require(${JSON.stringify(spec)})`;
+  try {
+    execFileSync(process.execPath, ["-e", expr], {
+      cwd: ROOT,
+      stdio: "pipe",
+      timeout: 120000,
+      windowsHide: true,
+    });
+    return { ok: true };
+  } catch (err) {
+    const text = [err.stderr && err.stderr.toString(), err.message].filter(Boolean).join("\n");
+    // "...compiled against ... NODE_MODULE_VERSION 137. This version of Node.js
+    //  requires NODE_MODULE_VERSION 127..."  -> first number is what it was built for.
+    const abis = [...text.matchAll(/NODE_MODULE_VERSION (\d+)/g)].map((m) => m[1]);
+    return {
+      ok: false,
+      abiMismatch: abis.length >= 2,
+      compiledAbi: abis.length >= 2 ? abis[0] : null,
+      error: summarizeError(text),
+    };
+  }
+}
+
+function describeProbe(probe) {
+  if (probe.abiMismatch) {
+    return `built for Node ABI ${probe.compiledAbi}, but this Node needs ABI ${NODE_ABI}`;
+  }
+  return probe.error;
+}
+
+function probeFfmpegBinary(bin) {
+  try {
+    const out = execFileSync(bin, ["-version"], {
+      stdio: "pipe",
+      timeout: 30000,
+      windowsHide: true,
+    }).toString();
+    return { ok: true, version: (out.split(/\r?\n/)[0] || "").slice(0, 60) };
+  } catch (err) {
+    const text = [err.stderr && err.stderr.toString(), err.message].filter(Boolean).join("\n");
+    return { ok: false, error: summarizeError(text) };
+  }
+}
+
+// ---------------------------------------------------------------------------
+// atomic swap helpers
+// ---------------------------------------------------------------------------
+
+let stashCounter = 0;
+
+/**
+ * Move `target` (file or directory) out of the way into node_modules/.tsmusicbot-backup.
+ * Same volume as node_modules, so the rename is atomic, and outside the package's
+ * build/ tree so that `npm rebuild` / `node-gyp clean` cannot wipe the backup.
+ * Returns { commit, restore } — call exactly one of them.
+ */
+/** Windows likes to hold a brief lock on a freshly written .node (antivirus,
+ *  indexer), and rmSync does not retry by default. */
+const RM_OPTS = { recursive: true, force: true, maxRetries: 5, retryDelay: 150 };
+
+function stash(target) {
+  if (!existsSync(target)) {
+    return { commit() {}, restore() {} };
+  }
+  mkdirSync(BACKUP_DIR, { recursive: true });
+  const backup = join(BACKUP_DIR, `${basename(target)}.${process.pid}.${stashCounter++}.bak`);
+  rmSync(backup, RM_OPTS);
+  renameSync(target, backup);
+  // The backup filename alone cannot say where the artifact came from, and a
+  // run that is killed (Ctrl+C during a slow download) never reaches commit or
+  // restore. Record the target so the next run can put it back — see
+  // recoverOrphanedBackups().
+  const manifest = `${backup}.json`;
+  try {
+    writeFileSync(manifest, `${JSON.stringify({ target })}\n`);
+  } catch {
+    /* recovery is best-effort; the swap itself still works */
+  }
+
+  let settled = false;
+  const dropManifest = () => {
+    try {
+      rmSync(manifest, RM_OPTS);
+    } catch {
+      /* ignore */
+    }
+  };
+  return {
+    commit() {
+      if (settled) return;
+      settled = true;
+      try {
+        rmSync(backup, RM_OPTS);
+      } catch {
+        /* leftover backup is harmless */
+      }
+      dropManifest();
+    },
+    restore() {
+      if (settled) return;
+      settled = true;
+      try {
+        rmSync(target, RM_OPTS);
+        mkdirSync(dirname(target), { recursive: true });
+        renameSync(backup, target);
+        dropManifest();
+        log(`restored the previous ${basename(target)} — nothing was made worse`);
+      } catch (err) {
+        // Leave the backup AND its manifest in place: recoverOrphanedBackups()
+        // on the next run is the second chance.
+        log(`WARN: could not restore ${target} from ${backup}: ${err.message}`);
+        log(`WARN: the previous file is still at ${backup} — the next run will try again`);
+      }
+    },
+  };
+}
+
+/**
+ * Put back anything a previous run stashed but never restored — a run killed
+ * mid-download, or one whose restore() itself failed. Only acts when the target
+ * is currently absent, so it can never clobber a good binary.
+ */
+function recoverOrphanedBackups() {
+  if (!existsSync(BACKUP_DIR)) return;
+  let entries;
+  try {
+    entries = readdirSync(BACKUP_DIR);
+  } catch {
+    return;
+  }
+  for (const entry of entries) {
+    if (!entry.endsWith(".json")) continue;
+    const manifest = join(BACKUP_DIR, entry);
+    const backup = manifest.slice(0, -".json".length);
+    try {
+      const { target } = JSON.parse(readFileSync(manifest, "utf8"));
+      if (!target || !existsSync(backup)) {
+        rmSync(manifest, RM_OPTS);
+        continue;
+      }
+      if (existsSync(target)) continue; // a good file is already there — leave it alone
+      mkdirSync(dirname(target), { recursive: true });
+      renameSync(backup, target);
+      rmSync(manifest, RM_OPTS);
+      log(`recovered ${basename(target)} left behind by an interrupted run`);
+    } catch (err) {
+      log(`WARN: could not process leftover backup ${entry}: ${err.message}`);
+    }
+  }
+}
+
+function cleanupBackupDir() {
+  try {
+    if (existsSync(BACKUP_DIR) && readdirSync(BACKUP_DIR).length === 0) {
+      rmSync(BACKUP_DIR, { recursive: true, force: true });
+    }
+  } catch {
+    /* ignore */
+  }
+}
+
+// ---------------------------------------------------------------------------
+// per-module results
+// ---------------------------------------------------------------------------
+
+/** status: "ok" | "repaired" | "failed" | "missing" */
+function makeResult(name, status, detail) {
+  return { name, required: REQUIRED.has(name), status, detail };
+}
+
+function buildFromSource(command) {
+  // stdout -> inherited (setup.bat sends it to the log), stderr -> inherited so
+  // compiler progress stays visible; npm's own output is far too noisy to buffer.
+  execSync(command, { cwd: ROOT, stdio: ["ignore", "inherit", "inherit"] });
+}
+
+/**
+ * A 404 from the CDN is not a mirror outage: it means this exact package
+ * version publishes no prebuilt binary for the running Node ABI at all.
+ * @discordjs/opus 0.10.0 has no build for Node 24 (ABI 137), so a user on that
+ * major lands in the source-build fallback below and is told to install Python
+ * and a C++ toolchain. Switching Node major is the far cheaper fix, and nothing
+ * else in this output points at it. (better-sqlite3 dropping its Node 20 / ABI
+ * 115 builds in 12.10.0 is why Node 20 is no longer accepted at all.)
+ * See issue #152.
+ */
+function explainMissingPrebuild(name, version, err) {
+  if (!/HTTP 404/.test(err.message)) return;
+  log(`${name}: ${name}@${version} ships no prebuilt binary for Node ${NODE_MAJOR} (ABI ${NODE_ABI})`);
+  log(
+    `${name}: Node ${TESTED_NODE_MAJOR} LTS has one — switching Node is usually much quicker than ` +
+      `setting up a compiler (换用 Node ${TESTED_NODE_MAJOR} LTS 通常比装编译环境快得多)`,
+  );
+}
+
+function buildToolsHint() {
+  log("Install build tools first:");
+  log("  Windows: npm install --global windows-build-tools  (或安装 Visual Studio Build Tools + Python)");
+  log("  Ubuntu/Debian: sudo apt install build-essential python3");
+  log("  CentOS/RHEL:   sudo yum groupinstall 'Development Tools'");
+}
+
+// ---------------------------------------------------------------------------
+// ffmpeg-static (OPTIONAL — a system ffmpeg is a documented fallback)
+// ---------------------------------------------------------------------------
+
+async function ensureFfmpeg() {
+  const name = "ffmpeg-static";
+  const ffDir = join(NODE_MODULES, name);
+  const ffName = PLATFORM === "win32" ? "ffmpeg.exe" : "ffmpeg";
+  const ffDest = join(ffDir, ffName);
+
+  if (!existsSync(ffDir)) {
+    log(`${name}: package not installed, skipping (a system ffmpeg on PATH also works)`);
+    return makeResult(name, "missing", "package not installed");
+  }
+
+  if (existsSync(ffDest) && sizeOf(ffDest) >= FFMPEG_MIN_BYTES) {
+    ensureExecutable(ffDest);
+    const probe = probeFfmpegBinary(ffDest);
+    if (probe.ok) {
+      log(`${name}: OK (${humanSize(ffDest)}, ${probe.version})`);
+      return makeResult(name, "ok", humanSize(ffDest));
+    }
+    // Deliberately NOT re-downloading here: ffmpeg is a plain executable with no
+    // ABI to mismatch, and forcing an ~80 MB re-download because `-version`
+    // could not be spawned would hurt exactly the slow-network users this
+    // script exists for.
+    log(`${name}: present (${humanSize(ffDest)}) but could not be executed: ${probe.error}`);
+    return makeResult(name, "ok", "present, not verified");
+  }
+
+  if (existsSync(ffDest)) {
+    log(`${name}: existing ffmpeg looks truncated (${humanSize(ffDest)}), re-downloading...`);
+  } else {
+    log(`${name}: ffmpeg binary missing, downloading...`);
+  }
+
+  const url = `${CDN}/ffmpeg-static/b6.1.1/ffmpeg-${PLATFORM}-${ARCH}.gz`;
+  const backup = stash(ffDest);
+  const tmpDest = `${ffDest}.tsmb-tmp-${process.pid}`;
+  try {
+    log(`${name}: GET ${url}  (~80 MB, 这一步比较慢,请耐心等待)`);
+    const buf = await download(url);
+    await pipeline(Readable.from(buf), createGunzip(), createWriteStream(tmpDest));
+    ensureExecutable(tmpDest);
+    if (sizeOf(tmpDest) < FFMPEG_MIN_BYTES) {
+      throw new Error(`downloaded ffmpeg is only ${humanSize(tmpDest)} — truncated`);
+    }
+    renameSync(tmpDest, ffDest); // atomic swap, same directory
+    backup.commit();
+    log(`${name}: OK (${humanSize(ffDest)})`);
+    return makeResult(name, "repaired", humanSize(ffDest));
+  } catch (err) {
+    try {
+      rmSync(tmpDest, { force: true });
+    } catch {
+      /* ignore */
+    }
+    backup.restore();
+    log(`${name}: download failed — ${err.message}`);
+    log(`${name}: not fatal — install ffmpeg system-wide and put it on PATH instead`);
+    return makeResult(name, "failed", err.message);
+  }
+}
+
+// ---------------------------------------------------------------------------
+// @discordjs/opus (REQUIRED)
+// ---------------------------------------------------------------------------
+
+async function ensureOpus() {
+  const name = "@discordjs/opus";
+  const pkgDir = join(NODE_MODULES, "@discordjs", "opus");
+  const prebuildRoot = join(pkgDir, "prebuild");
+  // node-pre-gyp resolves this directory from the *running* Node's ABI, so a
+  // stale build for another ABI simply sits at another path and is ignored.
+  const prebuildDirName = `node-v${NODE_ABI}-napi-v3-${PLATFORM}-${ARCH}-unknown-unknown`;
+  const destDir = join(prebuildRoot, prebuildDirName);
+
+  if (!existsSync(pkgDir)) {
+    log(`${name}: package not installed — run 'npm install' first`);
+    return makeResult(name, "missing", "package not installed");
+  }
+
+  const before = probeRequire(name);
+  if (before.ok) {
+    log(`${name}: OK (loads under ${process.version}, ABI ${NODE_ABI})`);
+    return makeResult(name, "ok", `ABI ${NODE_ABI}`);
+  }
+  log(`${name}: unusable — ${describeProbe(before)}`);
+  log(`${name}: installing a build for ABI ${NODE_ABI}...`);
+
+  const version = readInstalledVersion(name) || "0.10.0";
+  const url =
+    `${CDN}/@discordjs/opus/v${version}/opus-v${version}` +
+    `-node-v${NODE_ABI}-napi-v3-${PLATFORM}-${ARCH}-unknown-unknown.tar.gz`;
+
+  const backup = stash(destDir);
+  let staging = null;
+  try {
+    try {
+      log(`${name}: GET ${url}`);
+      const buf = await download(url);
+      staging = mkdtempSync(join(pkgDir, ".tsmb-staging-"));
+      await extractTarGz(buf, staging);
+      const staged = join(staging, prebuildDirName);
+      if (!existsSync(join(staged, "opus.node"))) {
+        throw new Error(`tarball did not contain ${prebuildDirName}/opus.node`);
+      }
+      mkdirSync(prebuildRoot, { recursive: true });
+      rmSync(destDir, { recursive: true, force: true });
+      renameSync(staged, destDir); // atomic swap, same volume
+      log(`${name}: prebuilt binary installed`);
+    } catch (cdnErr) {
+      log(`${name}: CDN install failed (${cdnErr.message})`);
+      explainMissingPrebuild(name, version, cdnErr);
+      log(`${name}: falling back to a source build — 'npm rebuild ${name}' (可能需要几分钟)`);
+      buildFromSource(`npm rebuild ${name}`);
+    }
+
+    const after = probeRequire(name);
+    if (!after.ok) throw new Error(describeProbe(after));
+    backup.commit();
+    log(`${name}: repaired, now loads under ${process.version} (ABI ${NODE_ABI})`);
+    return makeResult(name, "repaired", `ABI ${NODE_ABI}`);
+  } catch (err) {
+    backup.restore();
+    log(`${name}: FAILED — ${err.message}`);
+    buildToolsHint();
+    return makeResult(name, "failed", err.message);
+  } finally {
+    if (staging) {
+      try {
+        rmSync(staging, { recursive: true, force: true });
+      } catch {
+        /* ignore */
+      }
+    }
+  }
+}
+
+// ---------------------------------------------------------------------------
+// better-sqlite3 (REQUIRED) — the module the ABI bug actually bites
+// ---------------------------------------------------------------------------
+
+async function ensureBetterSqlite3() {
+  const name = "better-sqlite3";
+  const pkgDir = join(NODE_MODULES, name);
+  const dest = join(pkgDir, "build", "Release", "better_sqlite3.node");
+
+  if (!existsSync(pkgDir)) {
+    log(`${name}: package not installed — run 'npm install' first`);
+    return makeResult(name, "missing", "package not installed");
+  }
+
+  const before = probeRequire(name);
+  if (before.ok) {
+    log(`${name}: OK (loads under ${process.version}, ABI ${NODE_ABI})`);
+    return makeResult(name, "ok", `ABI ${NODE_ABI}`);
+  }
+  // This is the case the old size check could not see: the file is there, it is
+  // ~1.9 MB, and it is completely useless because it targets another ABI.
+  log(`${name}: unusable — ${describeProbe(before)}`);
+  log(`${name}: replacing the native binary with a build for ABI ${NODE_ABI}...`);
+
+  const version = readInstalledVersion(name) || "12.11.1";
+  const url = `${CDN}/${name}/v${version}/${name}-v${version}-node-v${NODE_ABI}-${PLATFORM}-${ARCH}.tar.gz`;
+
+  const backup = stash(dest);
+  let staging = null;
+  try {
+    try {
+      log(`${name}: GET ${url}`);
+      const buf = await download(url);
+      staging = mkdtempSync(join(pkgDir, ".tsmb-staging-"));
+      await extractTarGz(buf, staging);
+      const staged = join(staging, "build", "Release", "better_sqlite3.node");
+      if (!existsSync(staged)) {
+        throw new Error("tarball did not contain build/Release/better_sqlite3.node");
+      }
+      mkdirSync(dirname(dest), { recursive: true });
+      rmSync(dest, { force: true });
+      renameSync(staged, dest); // atomic swap, same volume
+      log(`${name}: prebuilt binary installed (${humanSize(dest)})`);
+    } catch (cdnErr) {
+      log(`${name}: CDN install failed (${cdnErr.message})`);
+      explainMissingPrebuild(name, version, cdnErr);
+      log(`${name}: falling back to a source build — 'npm rebuild ${name} --build-from-source' (可能需要几分钟)`);
+      buildFromSource(`npm rebuild ${name} --build-from-source`);
+    }
+
+    const after = probeRequire(name);
+    if (!after.ok) throw new Error(describeProbe(after));
+    backup.commit();
+    log(`${name}: repaired, now loads under ${process.version} (ABI ${NODE_ABI}, ${humanSize(dest)})`);
+    return makeResult(name, "repaired", `ABI ${NODE_ABI}`);
+  } catch (err) {
+    backup.restore();
+    log(`${name}: FAILED — ${err.message}`);
+    buildToolsHint();
+    return makeResult(name, "failed", err.message);
+  } finally {
+    if (staging) {
+      try {
+        rmSync(staging, { recursive: true, force: true });
+      } catch {
+        /* ignore */
+      }
+    }
+  }
+}
+
+// ---------------------------------------------------------------------------
+// stamp
+// ---------------------------------------------------------------------------
+
+/** Record which ABI this install was built for. Lives inside node_modules so it
+ *  dies together with the thing it describes. check-native.mjs reads it. */
+function writeStamp(results) {
+  if (!existsSync(NODE_MODULES)) return;
+  const stamp = {
+    abi: NODE_ABI,
+    nodeVersion: process.version,
+    platform: PLATFORM,
+    arch: ARCH,
+    updatedAt: new Date().toISOString(),
+    modules: Object.fromEntries(results.map((r) => [r.name, r.status])),
+  };
+  try {
+    writeFileSync(STAMP_FILE, `${JSON.stringify(stamp, null, 2)}\n`);
+    log(`ABI stamp written: node_modules/.tsmusicbot-abi (Node ${process.version}, ABI ${NODE_ABI})`);
+  } catch (err) {
+    log(`WARN: could not write ABI stamp: ${err.message}`);
+  }
+}
+
+// ---------------------------------------------------------------------------
+// main
+// ---------------------------------------------------------------------------
+
+const STEPS = [
+  ["ffmpeg-static", ensureFfmpeg],
+  ["@discordjs/opus", ensureOpus],
+  ["better-sqlite3", ensureBetterSqlite3],
+];
+
+try {
+  log(`Node ${process.version} (ABI ${NODE_ABI}), ${PLATFORM}-${ARCH}, CDN ${CDN}`);
+
+  recoverOrphanedBackups();
+
+  // STRICTLY SEQUENTIAL, and it has to stay that way. The source-build fallback
+  // shells out through execSync, which parks the event loop for minutes; the
+  // 120s timeout that download() arms is a socket-INACTIVITY timer sitting on
+  // that same loop. Run these concurrently and the first module to fall back to
+  // a source build kills every download still in flight — the connection is
+  // healthy, the timer just never got a chance to be reset. That is not a rare
+  // race: @discordjs/opus 0.10.0 has no prebuild for ABI 137, so on Node 24 that
+  // module 404s within ~100ms and starts building while ffmpeg's ~80MB download
+  // is still going. ffmpeg is optional,
+  // so the spurious failure used to be swallowed as a WARN and setup still
+  // reported success — leaving the user with no ffmpeg and no working playback.
+  // Nothing here benefits from overlap anyway: every probe is execFileSync.
+  const results = [];
+  for (const [name, run] of STEPS) {
+    try {
+      results.push(await run());
+    } catch (err) {
+      results.push(makeResult(name, "failed", err?.message ?? String(err)));
+    }
+  }
+
+  cleanupBackupDir();
+
+  log("");
+  log(`Summary — Node ${process.version} / ABI ${NODE_ABI} / ${PLATFORM}-${ARCH}:`);
+  for (const r of results) {
+    const tag =
+      r.status === "ok"
+        ? "OK"
+        : r.status === "repaired"
+          ? "REPAIRED"
+          : r.required
+            ? "FAILED"
+            : "WARN (optional)";
+    log(`  - ${r.name.padEnd(17)} ${tag}${r.detail ? `  ${r.detail}` : ""}`);
+  }
+
+  const broken = results.filter(
+    (r) => r.required && r.status !== "ok" && r.status !== "repaired",
+  );
+  // Only stamp a build that actually succeeded. The stamp says "node_modules is
+  // built for ABI X"; writing it after a failed repair would have check-native
+  // print a reassuring "built with ABI 137" right above its own "this module is
+  // built for ABI 127" complaint.
+  if (broken.length === 0) writeStamp(results);
+  // process.exitCode rather than process.exit(): setup.bat redirects stdout to
+  // setup.log, and process.exit() can drop output that has not flushed yet.
+  if (broken.length > 0) {
+    log("");
+    log(`ERROR: required native module(s) unusable: ${broken.map((r) => r.name).join(", ")}`);
+    log("必需的原生模块不可用,机器人无法启动 —— 请查看上面的错误信息。");
+    process.exitCode = 1;
+  } else {
+    log("All required native modules are ready.");
+    process.exitCode = 0;
+  }
+} catch (e) {
+  log(`ERROR: ${e.stack || e.message}`);
+  process.exitCode = 1;
+}

scripts/install.sh

@@ -6,9 +6,19 @@ echo "║       TSMusicBot Installer           ║"
 echo "╚══════════════════════════════════════╝"
 echo ""
 
+# Resolve script location → project root
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
 INSTALL_DIR="/opt/tsmusicbot"
 SERVICE_NAME="tsmusicbot"
 
+# Verify we're in a valid project directory
+if [ ! -f "$PROJECT_DIR/package.json" ]; then
+    echo "Error: Cannot find package.json in $PROJECT_DIR"
+    echo "Please run this script from the TSMusicBot project directory."
+    exit 1
+fi
+
 # Detect OS
 if [ -f /etc/os-release ]; then
     . /etc/os-release
@@ -18,44 +28,57 @@ else
     exit 1
 fi
 
-echo "[1/5] Installing system dependencies..."
+echo "[1/6] Installing system dependencies..."
 case $OS in
     ubuntu|debian)
         sudo apt-get update -qq
-        sudo apt-get install -y -qq curl ffmpeg
+        sudo apt-get install -y -qq curl build-essential python3
         ;;
     centos|rhel|fedora)
-        sudo yum install -y curl ffmpeg
+        sudo yum install -y curl gcc gcc-c++ make python3
         ;;
     arch|manjaro)
-        sudo pacman -S --noconfirm curl ffmpeg
+        sudo pacman -S --noconfirm curl base-devel python
         ;;
     *)
-        echo "Unsupported OS: $OS. Please install Node.js 20 and FFmpeg manually."
+        echo "Unsupported OS: $OS. Please install Node.js 20, build tools, and FFmpeg manually."
         ;;
 esac
 
-echo "[2/5] Installing Node.js 20 LTS..."
+echo "[2/6] Installing Node.js 20 LTS..."
 if ! command -v node &> /dev/null || [[ $(node -v | cut -d. -f1 | tr -d 'v') -lt 20 ]]; then
     curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
     sudo apt-get install -y -qq nodejs 2>/dev/null || sudo yum install -y nodejs 2>/dev/null
 fi
 echo "Node.js $(node -v) installed"
 
-echo "[3/5] Downloading TSMusicBot..."
-sudo mkdir -p "$INSTALL_DIR"
-if [ -d "$(pwd)/dist" ]; then
-    sudo cp -r "$(pwd)"/* "$INSTALL_DIR/"
-else
-    echo "Please run this script from the TSMusicBot source directory after building."
-    exit 1
+echo "[3/6] Installing dependencies..."
+cd "$PROJECT_DIR"
+npm install
+if [ -d "$PROJECT_DIR/web/package.json" ] || [ -f "$PROJECT_DIR/web/package.json" ]; then
+    (cd "$PROJECT_DIR/web" && npm install)
 fi
 
-echo "[4/5] Installing npm dependencies..."
-cd "$INSTALL_DIR"
-sudo npm install --production
+echo "[4/6] Building project..."
+npm run build
 
-echo "[5/5] Creating systemd service..."
+echo "[5/6] Copying to $INSTALL_DIR..."
+sudo mkdir -p "$INSTALL_DIR"
+sudo cp -r "$PROJECT_DIR/dist" "$INSTALL_DIR/"
+sudo cp -r "$PROJECT_DIR/node_modules" "$INSTALL_DIR/"
+sudo cp "$PROJECT_DIR/package.json" "$INSTALL_DIR/"
+# Copy web frontend if built
+if [ -d "$PROJECT_DIR/web/dist" ]; then
+    sudo mkdir -p "$INSTALL_DIR/web"
+    sudo cp -r "$PROJECT_DIR/web/dist" "$INSTALL_DIR/web/"
+fi
+# Copy scripts for future use
+sudo mkdir -p "$INSTALL_DIR/scripts"
+sudo cp -r "$PROJECT_DIR/scripts/"* "$INSTALL_DIR/scripts/" 2>/dev/null || true
+# Create data directory
+sudo mkdir -p "$INSTALL_DIR/data"
+
+echo "[6/6] Creating systemd service..."
 sudo tee /etc/systemd/system/${SERVICE_NAME}.service > /dev/null <<EOL
 [Unit]
 Description=TSMusicBot - TeamSpeak Music Bot
@@ -88,4 +111,5 @@ echo "║    Commands:                          ║"
 echo "║    systemctl status tsmusicbot       ║"
 echo "║    systemctl restart tsmusicbot      ║"
 echo "║    systemctl stop tsmusicbot         ║"
+echo "║    journalctl -u tsmusicbot -f       ║"
 echo "╚══════════════════════════════════════╝"

scripts/lib/console-log.mjs

@@ -0,0 +1,142 @@
+/**
+ * Crash-proof line logging for the setup scripts.
+ *
+ * WHY THIS EXISTS (issue #152)
+ * ----------------------------
+ * setup.bat runs `chcp 65001` and shows progress on stderr. Some Windows
+ * consoles - Windows Server 2012 R2 above all - cannot render non-ASCII text in
+ * that code page and the OS fails the write with EIO. `process.stderr` is an
+ * ordinary stream, so that EIO arrives as an 'error' event, and a stream with
+ * no 'error' listener rethrows it as an uncaught exception:
+ *
+ *     Error: write EIO
+ *         at afterWriteDispatched (node:internal/stream_base_commons:159:15)
+ *         ...
+ *         at log (scripts/download-binaries.mjs:84:18)
+ *         at ensureFfmpeg (scripts/download-binaries.mjs:451:5)
+ *
+ * That is setup killing itself inside its own progress logging, on the first
+ * line of the run that happened to contain Chinese - nothing was wrong with the
+ * download it was about to start.
+ *
+ * So: listen for the error and degrade instead of dying.
+ *   full  -> ascii : drop the CJK the console choked on, keep the English half
+ *   ascii -> off   : the stream is simply gone (closed pipe) - stay quiet
+ * Each stream degrades on its own, so a console that gives up does not cost
+ * setup.log its full bilingual transcript: that stdout is a redirected file.
+ */
+
+const HAS_NON_ASCII = /[^\x00-\x7F]/;
+
+/** Placeholders for a removed run: one that separated words, one that did not. */
+const SPACED = "\u0000";
+const TIGHT = "\u0001";
+
+/** Punctuation the bilingual strings use that has an obvious ASCII twin. */
+const PUNCTUATION = new Map(
+  Object.entries({
+    "—": "-",
+    "–": "-",
+    "…": "...",
+    "“": '"',
+    "”": '"',
+    "‘": "'",
+    "’": "'",
+    "，": ",",
+    "。": ".",
+    "、": ",",
+    "：": ":",
+    "；": ";",
+    "（": "(",
+    "）": ")",
+    "！": "!",
+    "？": "?",
+    "←": "<-",
+    "→": "->",
+    "×": "x",
+  }),
+);
+
+/**
+ * Best-effort ASCII rendering of a log line, for a console that cannot print
+ * anything else. Returns null when nothing worth printing survives - every
+ * Chinese-only line in these scripts sits directly beside an English line
+ * saying the same thing, so dropping it loses no information.
+ */
+export function toAsciiFallback(text) {
+  if (!HAS_NON_ASCII.test(text)) return text;
+
+  let out = "";
+  for (const ch of text) out += PUNCTUATION.get(ch) ?? ch;
+
+  out = out
+    .replace(/[\u0000\u0001]/g, "")
+    // Mark each removed run rather than just deleting it, so the tidy-up below
+    // can tell "a separator that introduced text we dropped" from "a separator
+    // that belongs to the English half". SPACED was holding two ASCII words
+    // apart; TIGHT was hugging a bracket or a comma.
+    .replace(/[ \t]*[^\x00-\x7F]+[ \t]*/g, (run) =>
+      /^[ \t]/.test(run) && /[ \t]$/.test(run) ? SPACED : TIGHT,
+    )
+    // "(可能需要几分钟)" — the parentheses held nothing else.
+    .replace(/[ \t]*\([ \t]*(?:[\u0000\u0001][ \t]*)+\)/g, "")
+    // "FAILED — 编译失败", "(~80 MB, 请耐心等待)" — drop the trailing marks along
+    // with the separators that were only ever there to introduce them.
+    .replace(/[ \t]*[-,;:]*[ \t]*(?:[\u0000\u0001][ \t,;:-]*)+(?=[)\]]|$)/gm, "")
+    .replace(/\u0000/g, " ")
+    .replace(/\u0001/g, "")
+    .replace(/[ \t]+$/gm, "");
+
+  return /[A-Za-z0-9]/.test(out) ? out : null;
+}
+
+/** One degradation state per stream, shared by every writer built on it. */
+const guards = new WeakMap();
+
+function guardFor(stream) {
+  const existing = guards.get(stream);
+  if (existing) return existing;
+
+  const guard = { mode: "full" };
+  guards.set(stream, guard);
+  try {
+    // The whole point: without this listener the next EIO/EPIPE is fatal.
+    stream.on("error", () => degrade(guard));
+  } catch {
+    /* not an EventEmitter - the try/catch around write() still guards us */
+  }
+  return guard;
+}
+
+function degrade(guard) {
+  guard.mode = guard.mode === "full" ? "ascii" : "off";
+}
+
+/**
+ * Build a `writeLine(text)` that appends a newline, never throws, and never
+ * lets a failed console write take the process down with it.
+ * Returns true when the line reached the stream.
+ */
+export function createLineWriter(stream) {
+  const guard = guardFor(stream);
+
+  return function writeLine(text) {
+    if (guard.mode === "off") return false;
+
+    let line = text;
+    if (guard.mode === "ascii") {
+      line = toAsciiFallback(text);
+      if (line === null) return false;
+    }
+
+    try {
+      stream.write(`${line}\n`);
+      return true;
+    } catch {
+      // A synchronous throw (EBADF on a closed handle) never reaches the
+      // 'error' listener, so degrade here too.
+      degrade(guard);
+      return false;
+    }
+  };
+}

scripts/lib/console-log.test.mjs

@@ -0,0 +1,133 @@
+import { EventEmitter } from "node:events";
+import { describe, expect, it, vi } from "vitest";
+
+import { createLineWriter, toAsciiFallback } from "./console-log.mjs";
+
+/** Stand-in for process.stderr: an EventEmitter with a write() we can steer. */
+function fakeStream() {
+  const stream = new EventEmitter();
+  stream.written = [];
+  stream.throwOnWrite = false;
+  stream.write = (chunk) => {
+    if (stream.throwOnWrite) throw new Error("EBADF");
+    stream.written.push(chunk);
+    return true;
+  };
+  return stream;
+}
+
+describe("toAsciiFallback", () => {
+  it("leaves ASCII lines exactly as they are", () => {
+    const line = "  [binary] better-sqlite3: OK (loads under v22.23.2, ABI 127)";
+    expect(toAsciiFallback(line)).toBe(line);
+    expect(toAsciiFallback("")).toBe("");
+  });
+
+  it("keeps the English half of the line that crashed setup in #152", () => {
+    expect(
+      toAsciiFallback(
+        "  [binary] ffmpeg-static: GET https://cdn/ffmpeg.gz  (~80 MB, 这一步比较慢,请耐心等待)",
+      ),
+    ).toBe("  [binary] ffmpeg-static: GET https://cdn/ffmpeg.gz  (~80 MB)");
+  });
+
+  it("drops parentheses and separators left stranded by the removed text", () => {
+    expect(
+      toAsciiFallback("  [binary] better-sqlite3: falling back — 'npm rebuild' (可能需要几分钟)"),
+    ).toBe("  [binary] better-sqlite3: falling back - 'npm rebuild'");
+    expect(
+      toAsciiFallback("  Windows: npm install --global windows-build-tools  (或安装 VS Build Tools)"),
+    ).toBe("  Windows: npm install --global windows-build-tools  (VS Build Tools)");
+  });
+
+  it("drops a Chinese-only line, which always has an English twin beside it", () => {
+    expect(toAsciiFallback("必需的原生模块不可用,机器人无法启动 —— 请查看上面的错误信息。")).toBeNull();
+  });
+
+  it("preserves the indentation the summary is aligned on, and drops the dangling dash", () => {
+    expect(toAsciiFallback("  - better-sqlite3     FAILED — 编译失败")).toBe(
+      "  - better-sqlite3     FAILED",
+    );
+  });
+
+  it("keeps a separator that belongs to the English half", () => {
+    expect(toAsciiFallback("Summary — Node v22.0.0 / ABI 127 / win32-x64:")).toBe(
+      "Summary - Node v22.0.0 / ABI 127 / win32-x64:",
+    );
+  });
+});
+
+describe("createLineWriter", () => {
+  it("appends a newline and reports the write", () => {
+    const stream = fakeStream();
+    expect(createLineWriter(stream)("hello")).toBe(true);
+    expect(stream.written).toEqual(["hello\n"]);
+  });
+
+  it("survives the EIO that killed setup: an 'error' event must not throw", () => {
+    const stream = fakeStream();
+    createLineWriter(stream);
+    expect(stream.listenerCount("error")).toBe(1);
+    expect(() => stream.emit("error", Object.assign(new Error("write EIO"), { code: "EIO" }))).not.toThrow();
+  });
+
+  it("falls back to ASCII once the console has refused a line", () => {
+    const stream = fakeStream();
+    const write = createLineWriter(stream);
+    write("  [binary] GET https://cdn/ffmpeg.gz  (~80 MB, 这一步比较慢,请耐心等待)");
+    stream.emit("error", new Error("write EIO"));
+    write("  [binary] GET https://cdn/opus.tar.gz  (~1 MB, 这一步比较慢,请耐心等待)");
+    expect(stream.written).toEqual([
+      "  [binary] GET https://cdn/ffmpeg.gz  (~80 MB, 这一步比较慢,请耐心等待)\n",
+      "  [binary] GET https://cdn/opus.tar.gz  (~1 MB)\n",
+    ]);
+  });
+
+  it("goes quiet after a second failure rather than retrying a dead stream", () => {
+    const stream = fakeStream();
+    const write = createLineWriter(stream);
+    stream.emit("error", new Error("write EIO"));
+    stream.emit("error", new Error("write EPIPE"));
+    expect(write("anything at all")).toBe(false);
+    expect(stream.written).toEqual([]);
+  });
+
+  it("degrades on a synchronous throw too, which never reaches the listener", () => {
+    const stream = fakeStream();
+    const write = createLineWriter(stream);
+    stream.throwOnWrite = true;
+    expect(write("  [binary] 下载中 downloading")).toBe(false);
+    stream.throwOnWrite = false;
+    write("  [binary] 下载中 downloading");
+    expect(stream.written).toEqual(["  [binary] downloading\n"]);
+  });
+
+  it("degrades each stream on its own, so setup.log keeps the full transcript", () => {
+    const console_ = fakeStream();
+    const logFile = fakeStream();
+    const writeConsole = createLineWriter(console_);
+    const writeLog = createLineWriter(logFile);
+    console_.emit("error", new Error("write EIO"));
+
+    const line = "  [binary] ffmpeg-static: 下载完成 done";
+    writeConsole(line);
+    writeLog(line);
+
+    expect(console_.written).toEqual(["  [binary] ffmpeg-static: done\n"]);
+    expect(logFile.written).toEqual([`${line}\n`]);
+  });
+
+  it("never installs a second listener for a stream that already has a writer", () => {
+    const stream = fakeStream();
+    createLineWriter(stream);
+    createLineWriter(stream);
+    expect(stream.listenerCount("error")).toBe(1);
+  });
+
+  it("still guards a stream that is not an EventEmitter", () => {
+    const stream = { write: vi.fn(() => { throw new Error("EBADF"); }) };
+    const write = createLineWriter(stream);
+    expect(() => write("line")).not.toThrow();
+    expect(write("line")).toBe(false);
+  });
+});

scripts/qq_browser_login.py

@@ -0,0 +1,212 @@
+"""Open a real Chromium browser at y.qq.com, let the user log in via any
+method (password / QR / QQ connect), then extract the resulting cookie
+set and save it to data/cookies/qq.json. Also tests whether the cookie
+actually unlocks a known VIP track (Jay Chou 稻香) against the local
+QQ Music API before declaring success.
+
+Usage:
+    "C:/Users/saopig1/miniforge3/python.exe" scripts/qq_browser_login.py
+
+Steps:
+    1. A visible Chromium window opens at y.qq.com/n/ryqq/player
+    2. Click the login button in the top right and log in with your
+       real QQ Music account (the one that has VIP)
+    3. The script POLLS cookies in the background and auto-detects
+       successful login by watching for the `uin` cookie to appear
+    4. Once detected, cookies are captured, tested against
+       /getMusicPlay for 稻香, and saved on success
+    5. If VIP still fails, cookies are NOT saved — your existing bot
+       cookie stays untouched
+
+No terminal input required — the script exits on its own when login
+is detected (or after the configured timeout).
+"""
+from __future__ import annotations
+
+import json
+import re
+import time
+from pathlib import Path
+
+import requests
+from playwright.sync_api import sync_playwright
+
+BOT_ROOT = Path(r"C:\Users\saopig1\Music\teamspeak music bot")
+COOKIE_FILE = BOT_ROOT / "data" / "cookies" / "qq.json"
+QQ_API = "http://localhost:3200"
+VIP_TEST_SONGMID = "003aAYrm3GE0Ac"  # 稻香 周杰伦
+
+# How long to wait for the user to finish logging in
+LOGIN_TIMEOUT_S = 300  # 5 minutes
+POLL_INTERVAL_S = 1.0
+# After detecting login, wait a bit for extra cookies (e.g. qqmusic_key)
+SETTLE_DELAY_S = 4.0
+
+
+def qq_cookies(ctx) -> list[dict]:
+    wanted_suffixes = (".qq.com", "y.qq.com", ".music.qq.com")
+    return [
+        c for c in ctx.cookies()
+        if any(c.get("domain", "").endswith(s) or c.get("domain", "") == s.lstrip(".")
+               for s in wanted_suffixes)
+    ]
+
+
+def cookies_to_header(cookies: list[dict]) -> str:
+    return "; ".join(f"{c['name']}={c['value']}" for c in cookies)
+
+
+def cookie_has_uin(cookies: list[dict]) -> str | None:
+    for c in cookies:
+        if c["name"] == "uin" and c["value"]:
+            return c["value"]
+    return None
+
+
+def test_vip_unlock(cookie_header: str) -> tuple[bool, dict]:
+    try:
+        r = requests.get(
+            f"{QQ_API}/getMusicPlay",
+            params={"songmid": VIP_TEST_SONGMID, "cookie": cookie_header},
+            timeout=10,
+            proxies={"http": None, "https": None},
+        )
+        body = r.json()
+        play = body.get("data", {}).get("playUrl", {}).get(VIP_TEST_SONGMID, {})
+        url = play.get("url", "")
+        return (
+            bool(url),
+            {
+                "url_length": len(url),
+                "url_prefix": url[:120] if url else "",
+                "error": play.get("error", ""),
+            },
+        )
+    except Exception as e:
+        return False, {"error": f"request failed: {e}"}
+
+
+def main() -> int:
+    print("[setup] launching visible Chromium — look for the window on your desktop")
+    print("[setup] goto https://y.qq.com/n/ryqq/player")
+    print()
+    print("action required:")
+    print("  1. Click the 登录 button (top-right) in the browser window")
+    print("  2. Log in with your VIP QQ Music account (QR / password / WeChat)")
+    print("  3. Do NOTHING in this terminal — the script detects login itself")
+    print()
+
+    with sync_playwright() as p:
+        browser = p.chromium.launch(headless=False)
+        ctx = browser.new_context(
+            viewport={"width": 1280, "height": 820},
+            user_agent=(
+                "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
+                "AppleWebKit/537.36 (KHTML, like Gecko) "
+                "Chrome/132.0.0.0 Safari/537.36"
+            ),
+        )
+        page = ctx.new_page()
+        try:
+            page.goto("https://y.qq.com/n/ryqq/player", wait_until="domcontentloaded", timeout=30_000)
+        except Exception as e:
+            print(f"[warn] initial navigation slow: {e}")
+
+        print(f"[wait] polling every {POLL_INTERVAL_S}s for login (timeout {LOGIN_TIMEOUT_S}s)")
+        deadline = time.time() + LOGIN_TIMEOUT_S
+        uin_detected: str | None = None
+        last_report = 0.0
+        while time.time() < deadline:
+            cks = qq_cookies(ctx)
+            uin = cookie_has_uin(cks)
+            if uin:
+                uin_detected = uin
+                print(f"[detect] uin cookie appeared: {uin}")
+                break
+            now = time.time()
+            if now - last_report >= 15:
+                remaining = int(deadline - now)
+                n = len(cks)
+                print(f"[wait] still waiting... {n} qq.com cookies so far, {remaining}s left")
+                last_report = now
+            time.sleep(POLL_INTERVAL_S)
+
+        if not uin_detected:
+            print("[abort] login not detected within timeout")
+            browser.close()
+            return 1
+
+        print(f"[settle] waiting {SETTLE_DELAY_S}s for session cookies to populate")
+        time.sleep(SETTLE_DELAY_S)
+
+        cks = qq_cookies(ctx)
+        cookie_header = cookies_to_header(cks)
+        print(f"[capture] {len(cks)} cookies, {len(cookie_header)} char header")
+
+        qm_key = next((c["value"] for c in cks if c["name"] == "qqmusic_key"), "")
+        qm_keyst = next((c["value"] for c in cks if c["name"] == "qm_keyst"), "")
+        p_skey = next((c["value"] for c in cks if c["name"] == "p_skey"), "")
+        print(f"[capture] qqmusic_key: {'present (' + qm_key[:20] + '...)' if qm_key else '(absent)'}")
+        print(f"[capture] qm_keyst   : {'present (' + qm_keyst[:20] + '...)' if qm_keyst else '(absent)'}")
+        print(f"[capture] p_skey     : {'present' if p_skey else '(absent)'}")
+
+        print("\n[test] calling /getMusicPlay for 稻香 with captured cookie...")
+        unlocked, details = test_vip_unlock(cookie_header)
+        print(f"[test] unlocked: {unlocked}")
+        print(f"[test] details: {details}")
+
+        if not unlocked:
+            print(
+                "\n[result] VIP did NOT unlock even with browser-extracted cookies.\n"
+                "         Existing cookie file is UNTOUCHED.\n"
+                "         Diagnosis: the login flow is not the bottleneck — the\n"
+                "         account likely lacks entitlement for this specific track,\n"
+                "         OR QQ requires additional session setup (gateway handshake)\n"
+                "         beyond what's in the cookie itself.\n"
+            )
+            # Dump the full cookie set for inspection
+            dump_path = BOT_ROOT / "data" / "cookies" / "qq.browser-capture.json"
+            dump_path.write_text(
+                json.dumps(
+                    {"cookie": cookie_header, "cookieList": cks, "capturedAt": time.strftime("%Y-%m-%dT%H:%M:%SZ")},
+                    ensure_ascii=False,
+                    indent=2,
+                ),
+                encoding="utf-8",
+            )
+            print(f"[dump] full browser cookies written to {dump_path}")
+            print("       (for side-by-side comparison with OAuth-derived cookies)")
+            browser.close()
+            return 2
+
+        print("\n[save] VIP unlocked. Writing cookie to bot...")
+        COOKIE_FILE.write_text(
+            json.dumps(
+                {"cookie": cookie_header, "updatedAt": time.strftime("%Y-%m-%dT%H:%M:%SZ")},
+                ensure_ascii=False,
+            ),
+            encoding="utf-8",
+        )
+        print(f"[save] wrote {COOKIE_FILE}")
+
+        try:
+            r = requests.post(
+                "http://localhost:3000/api/auth/cookie",
+                json={"platform": "qq", "cookie": cookie_header},
+                timeout=5,
+                proxies={"http": None, "https": None},
+            )
+            print(f"[notify] /api/auth/cookie POST: {r.status_code}")
+        except Exception as e:
+            print(f"[notify] failed to push cookie to bot: {e}")
+            print("         Restart the bot to pick up the new cookie from disk.")
+
+        print("\n[done] VIP should now work through the bot. Try playing 稻香!")
+        browser.close()
+        return 0
+
+
+if __name__ == "__main__":
+    import sys
+
+    sys.exit(main())

scripts/qq_verify_entitlement.py

@@ -0,0 +1,119 @@
+"""Open a visible browser at y.qq.com so the user can manually verify
+whether their VIP account can play 稻香 (Jay Chou) in the real QQ Music
+web player.
+
+If the browser plays the song → entitlement exists and our 104003 is a
+request-signing issue.
+If the browser refuses / shows a VIP modal / silently fails → the
+account doesn't have entitlement OR QQ's web player hits the same wall.
+"""
+import sys
+import time
+from playwright.sync_api import sync_playwright
+
+# Force line-buffered stdout so logs actually reach the output file
+sys.stdout.reconfigure(line_buffering=True)
+
+START_URL = "https://y.qq.com/n/ryqq/player"
+SONG_URL = "https://y.qq.com/n/ryqq/songDetail/003aAYrm3GE0Ac"
+
+
+def log(msg: str) -> None:
+    print(msg, flush=True)
+
+
+def main() -> int:
+    log("[setup] launching visible Chromium")
+    log(f"[setup] start URL: {START_URL}")
+    log(f"[setup] song URL:  {SONG_URL}")
+    log("")
+    log("action required:")
+    log("  1. The browser opens at the player page")
+    log("  2. Make sure your VIP account is logged in (top-right avatar)")
+    log("     — if not, log in now, the script will wait")
+    log("  3. Once logged in, the browser will auto-navigate to 稻香")
+    log("  4. Click the PLAY button and report what happens:")
+    log("     (a) song plays → account has entitlement, issue is request signing")
+    log("     (b) VIP modal → account needs higher tier / digital album purchase")
+    log("     (c) silent failure → QQ web player has same 104003 wall")
+    log("")
+    log("[wait] browser stays open for 5 minutes")
+    log("")
+
+    with sync_playwright() as p:
+        try:
+            browser = p.chromium.launch(headless=False)
+        except Exception as e:
+            log(f"[fatal] failed to launch Chromium: {e}")
+            return 1
+
+        ctx = browser.new_context(
+            viewport={"width": 1400, "height": 900},
+            user_agent=(
+                "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
+                "AppleWebKit/537.36 (KHTML, like Gecko) "
+                "Chrome/132.0.0.0 Safari/537.36"
+            ),
+        )
+        page = ctx.new_page()
+
+        # Log every navigation so we can see if pages fail
+        page.on("framenavigated", lambda f: log(f"[nav] {f.url[:120]}") if f == page.main_frame else None)
+        page.on("pageerror", lambda e: log(f"[js-error] {str(e)[:200]}"))
+
+        # Step 1: open the player page (known working)
+        log(f"[goto] {START_URL}")
+        try:
+            page.goto(START_URL, wait_until="domcontentloaded", timeout=30_000)
+            log(f"[ok] loaded: {page.url}")
+        except Exception as e:
+            log(f"[warn] initial goto failed: {e}")
+            log("[warn] browser stays open, try manual navigation")
+
+        # Wait briefly for auth state to settle
+        time.sleep(3)
+
+        # Check if the user is logged in via the uin cookie
+        cookies = ctx.cookies()
+        uin = next((c["value"] for c in cookies if c["name"] == "uin" and c["value"]), None)
+        if uin:
+            log(f"[auth] logged in as uin={uin}")
+        else:
+            log("[auth] not logged in yet — please log in via the top-right avatar")
+            log("[auth] waiting up to 2 minutes for login...")
+            end = time.time() + 120
+            while time.time() < end:
+                time.sleep(1)
+                cookies = ctx.cookies()
+                uin = next((c["value"] for c in cookies if c["name"] == "uin" and c["value"]), None)
+                if uin:
+                    log(f"[auth] detected login: uin={uin}")
+                    break
+            if not uin:
+                log("[abort] no login detected within 2 minutes")
+                time.sleep(30)  # keep browser visible
+                browser.close()
+                return 2
+
+        # Step 2: navigate to the song page
+        log(f"[goto] {SONG_URL}")
+        try:
+            page.goto(SONG_URL, wait_until="domcontentloaded", timeout=30_000)
+            log(f"[ok] loaded: {page.url}")
+        except Exception as e:
+            log(f"[warn] song navigation failed: {e}")
+            log(f"[info] current page: {page.url}")
+
+        log("")
+        log("===========================================================")
+        log("browser is open on the song page — click PLAY and observe.")
+        log("keeping browser open for 5 more minutes")
+        log("===========================================================")
+
+        time.sleep(300)
+        browser.close()
+        return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

scripts/screenshot_navbar.py

@@ -0,0 +1,12 @@
+from playwright.sync_api import sync_playwright
+
+with sync_playwright() as p:
+    browser = p.chromium.launch(headless=True)
+    page = browser.new_page(viewport={"width": 1440, "height": 900})
+    page.goto("http://localhost:3000")
+    page.wait_for_load_state("networkidle")
+    page.wait_for_timeout(800)
+    page.locator(".navbar").screenshot(path="scripts/navbar_bigger.png")
+    rect = page.locator(".bot-selector-btn").bounding_box()
+    print("bot-selector-btn bbox:", rect)
+    browser.close()

scripts/setup.bat

@@ -1,91 +1,348 @@
-@echo off
-title TSMusicBot Setup
-echo ============================================
-echo   TSMusicBot - First-Time Setup (Windows)
-echo ============================================
-echo.
-
-:: Resolve project root (one level up from scripts/)
-cd /d "%~dp0.."
-
-:: ---- Step 1: Check / install Node.js ----
-where node >nul 2>&1
-if %errorlevel% neq 0 (
-    echo Node.js not found. Attempting automatic installation...
-    echo.
-
-    :: Try winget first (available on Windows 10 1709+ and Windows 11)
-    where winget >nul 2>&1
-    if %errorlevel% equ 0 (
-        echo Installing Node.js via winget...
-        winget install OpenJS.NodeJS.LTS --accept-source-agreements --accept-package-agreements
-        if %errorlevel% neq 0 (
-            echo winget installation failed. Please install Node.js manually from https://nodejs.org
-            pause
-            exit /b 1
-        )
-        :: Refresh PATH so node is available in this session
-        call refreshenv >nul 2>&1
-        :: If refreshenv is not available, ask user to restart
-        where node >nul 2>&1
-        if %errorlevel% neq 0 (
-            echo.
-            echo Node.js was installed but is not yet available in this terminal.
-            echo Please close this window and run setup.bat again.
-            pause
-            exit /b 0
-        )
-    ) else (
-        echo winget is not available on this system.
-        echo Please install Node.js 20 LTS manually from https://nodejs.org
-        echo After installing, close this window and run setup.bat again.
-        pause
-        exit /b 1
-    )
-) else (
-    echo [OK] Node.js found.
-    node --version
-)
-echo.
-
-:: ---- Step 2: Install npm dependencies ----
-echo Installing dependencies (this may take a few minutes)...
-call npm install
-if %errorlevel% neq 0 (
-    echo.
-    echo npm install failed. Check the error messages above.
-    pause
-    exit /b 1
-)
-echo [OK] Dependencies installed.
-echo.
-
-:: ---- Step 3: Build the project ----
-echo Building TypeScript project...
-call npx tsc
-if %errorlevel% neq 0 (
-    echo.
-    echo Build failed. Check the error messages above.
-    pause
-    exit /b 1
-)
-echo [OK] Build succeeded.
-echo.
-
-:: ---- Step 4: Create default config if missing ----
-if not exist "config.json" (
-    echo Creating default config.json...
-    echo Please edit config.json with your TeamSpeak server details before starting the bot.
-) else (
-    echo [OK] config.json already exists.
-)
-echo.
-
-:: ---- Done ----
-echo ============================================
-echo   Setup complete!
-echo ============================================
-echo.
-echo To start the bot, run:  scripts\start.bat
-echo.
-pause
+@echo off
+setlocal enabledelayedexpansion
+chcp 65001 >nul
+title TSMusicBot Setup
+
+:: ============================================================
+::  TSMusicBot Setup Script (Windows)
+::  - Auto-detect China network, switch to npmmirror
+::  - Download native binaries from CDN (避开 GitHub)
+::  - 自动修复 PowerShell 环境变量
+:: ============================================================
+
+set "SCRIPT_VERSION=2.2"
+set "MIN_NODE_MAJOR=22"
+:: Newest Node major this project is regularly tested against. Anything above
+:: still works, it just may have no prebuilt addons and fall back to a source build.
+set "TESTED_NODE_MAJOR=22"
+set "LOG_FILE=%~dp0..\setup.log"
+set "FAILED=0"
+
+:: Resolve project root (one level up from scripts/)
+cd /d "%~dp0.." || (
+    echo [FATAL] Cannot change to project directory.
+    pause
+    exit /b 1
+)
+
+set "PROJECT_ROOT=%cd%"
+
+:: ---- Initialize log ----
+echo. > "%LOG_FILE%"
+call :log "============================================"
+call :log "  TSMusicBot Setup v%SCRIPT_VERSION%"
+call :log "  Started: %date% %time%"
+call :log "  Project root: %PROJECT_ROOT%"
+call :log "============================================"
+
+echo ============================================
+echo   TSMusicBot - First-Time Setup (Windows)
+echo   Version %SCRIPT_VERSION%
+echo ============================================
+echo.
+echo Log file: %LOG_FILE%
+echo.
+
+:: ============================================================
+:: Step 1: Check Node.js
+:: ============================================================
+call :step "1/7" "Checking Node.js"
+
+where node >nul 2>&1
+if not errorlevel 1 goto :check_node_version
+
+call :error "Node.js not found in PATH."
+echo.
+echo Please install Node.js %MIN_NODE_MAJOR% LTS or newer from:
+echo   https://nodejs.org/  (official)
+echo   https://nodejs.cn/   (China mirror, recommended)
+echo.
+pause
+exit /b 1
+
+:check_node_version
+for /f "delims=" %%v in ('node --version 2^>nul') do set "NODE_VER=%%v"
+for /f "tokens=1 delims=v." %%a in ("%NODE_VER%") do set "NODE_MAJOR=%%a"
+
+call :log "Node.js version: %NODE_VER%"
+echo [OK] Node.js found: %NODE_VER%
+
+:: The supported floor is not just a major version, so let node decide.
+:: Node 20 was dropped: better-sqlite3 ships no prebuilt binary for its ABI
+:: (115) since 12.10.0, so every Node 20 install needed Python and a C++
+:: toolchain just to get off the ground (issue #152). The odd majors (21 /
+:: 23) are excluded by better-sqlite3 and vitest.
+:: Keep this in sync with "engines" in package.json.
+node -e "const v=process.versions.node.split('.').map(Number); process.exit((v[0]===22&&v[1]>=12)||v[0]>=24?0:1)"
+if errorlevel 1 (
+    call :error "Node.js %NODE_VER% is not supported. Use Node 22.12+ LTS or newer."
+    echo         Download: https://nodejs.org/  or  https://nodejs.cn/
+    pause
+    exit /b 1
+)
+
+:: Not fatal: setup now rebuilds the native modules for whatever ABI you run,
+:: so newer Node majors work - they are just slower to install.
+:: NOTE: keep every line inside these parenthesised blocks pure ASCII.
+:: cmd.exe mis-tracks its file offset when a block contains multi-byte UTF-8
+:: characters and starts eating the "echo " prefix of following lines.
+:: Bilingual guidance lives in the Node scripts, which print UTF-8 reliably.
+if %NODE_MAJOR% GTR %TESTED_NODE_MAJOR% (
+    echo [WARN] Node %NODE_VER% is newer than the tested LTS line, Node 22.
+    echo        Newer Node majors may have no prebuilt opus / better-sqlite3,
+    echo        so setup falls back to a source build - slower, needs C++ build tools.
+    echo        Recommended: Node 22 LTS - https://nodejs.org/ or https://nodejs.cn/
+    echo        This is only a warning; setup still builds the binaries for %NODE_VER%.
+    call :log "[WARN] Node major %NODE_MAJOR% is newer than tested LTS %TESTED_NODE_MAJOR%"
+)
+echo.
+
+:: Native addons are tied to one Node ABI. If node_modules was built by a
+:: different Node major, step 4b below detects it and repairs it.
+call :log "Node ABI for this install: see node_modules\.tsmusicbot-abi after step 4b"
+
+:: ============================================================
+:: Step 2: Check npm
+:: ============================================================
+call :step "2/7" "Checking npm"
+
+where npm >nul 2>&1
+if errorlevel 1 (
+    call :error "npm not found."
+    pause
+    exit /b 1
+)
+
+for /f "delims=" %%v in ('npm --version 2^>nul') do set "NPM_VER=%%v"
+call :log "npm version: %NPM_VER%"
+echo [OK] npm found: %NPM_VER%
+echo.
+
+:: ============================================================
+:: Step 3: Detect network and configure mirror
+:: ============================================================
+call :step "3/7" "Checking network"
+
+set "USE_MIRROR=0"
+set "MIRROR_REGISTRY=https://registry.npmjs.org"
+
+echo Testing connection to npm registry...
+call :log "Testing npm registry connectivity..."
+
+ping -n 1 -w 4000 registry.npmjs.org >nul 2>&1
+if errorlevel 1 (
+    echo [WARN] Cannot reach npm registry quickly, using China mirror.
+    call :log "npm registry unreachable via ping"
+    set "USE_MIRROR=1"
+) else (
+    echo [OK] npm registry reachable.
+    call :log "npm registry reachable"
+)
+
+if "%USE_MIRROR%"=="1" (
+    echo.
+    echo [INFO] Using China mirror (npmmirror.com)
+    call :log "Switching to npmmirror.com"
+    set "MIRROR_REGISTRY=https://registry.npmmirror.com"
+    set "CDN_MIRROR=https://cdn.npmmirror.com/binaries"
+) else (
+    set "CDN_MIRROR="
+)
+echo.
+
+:: ============================================================
+:: Step 4: Install backend dependencies (跳过二进制)
+:: ============================================================
+call :step "4/7" "Installing backend dependencies"
+
+if exist "node_modules\.package-lock.json" (
+    echo Found existing node_modules. Checking integrity...
+)
+
+echo Running: npm install --ignore-scripts (跳过 GitHub 二进制下载)
+echo.
+
+call npm install --registry=%MIRROR_REGISTRY% --ignore-scripts >>"%LOG_FILE%" 2>&1
+if errorlevel 1 (
+    call :error "Backend npm install failed."
+    echo Check the log: %LOG_FILE%
+    pause
+    exit /b 1
+)
+echo [OK] Backend dependencies installed.
+echo.
+
+:: ============================================================
+:: Step 4b: Verify / download / repair native binaries (ABI aware)
+:: ============================================================
+call :step "4b/7" "Checking native binaries"
+
+echo Verifying native modules for %NODE_VER% and downloading whatever is missing.
+echo Progress is shown below; the full transcript goes to the log file.
+echo.
+
+:: The .mjs writes progress to stderr and - with TSMB_BINARY_LOG_STDOUT=1 - the
+:: same lines to stdout. Redirecting only stdout therefore keeps the log complete
+:: while the user still sees live progress instead of a frozen window.
+set "TSMB_BINARY_LOG_STDOUT=1"
+node scripts\download-binaries.mjs %CDN_MIRROR% >>"%LOG_FILE%"
+set "BIN_RESULT=!errorlevel!"
+set "TSMB_BINARY_LOG_STDOUT="
+
+:: ASCII only inside these blocks - see the note near the Node version check.
+if not "!BIN_RESULT!"=="0" (
+    set "FAILED=1"
+    call :error "A required native module is unusable - see the [binary] lines above."
+    echo         Required: @discordjs/opus and better-sqlite3.
+    echo         Full log: %LOG_FILE%
+)
+
+if "!FAILED!"=="1" (
+    echo.
+    echo Setup aborted. Fix the problem above and run this script again.
+    call :log "Setup aborted at step 4b"
+    pause
+    exit /b 1
+)
+
+echo [OK] Native binaries ready for %NODE_VER%.
+echo      ABI recorded in node_modules\.tsmusicbot-abi
+echo.
+
+:: ============================================================
+:: Step 5: Install frontend dependencies
+:: ============================================================
+call :step "5/7" "Installing frontend dependencies"
+
+if not exist "web\package.json" (
+    call :error "web\package.json not found."
+    pause
+    exit /b 1
+)
+
+echo Running: npm install (in web/)
+echo.
+
+pushd web >nul
+call npm install --registry=%MIRROR_REGISTRY% >>"%LOG_FILE%" 2>&1
+set "WEB_INSTALL_RESULT=!errorlevel!"
+popd >nul
+
+if !WEB_INSTALL_RESULT! neq 0 (
+    call :error "Frontend npm install failed."
+    pause
+    exit /b 1
+)
+echo [OK] Frontend dependencies installed.
+echo.
+
+:: ============================================================
+:: Step 6: Build project
+:: ============================================================
+call :step "6/7" "Building project"
+
+echo Running: npm run build
+echo.
+
+call npm run build >>"%LOG_FILE%" 2>&1
+if errorlevel 1 (
+    call :error "Build failed. Check: %LOG_FILE%"
+    pause
+    exit /b 1
+)
+echo [OK] Build succeeded.
+echo.
+
+:: ============================================================
+:: Step 7: Ensure PowerShell in PATH (修复 jdymusic CDN 播放)
+:: ============================================================
+call :step "7/7" "Checking PowerShell PATH"
+
+where powershell >nul 2>&1
+if errorlevel 1 (
+    echo [WARN] PowerShell not found in PATH.
+    echo Attempting to fix...
+    set "POWERSHELL_PATH=C:\Windows\System32\WindowsPowerShell\v1.0"
+    if exist "!POWERSHELL_PATH!\powershell.exe" (
+        :: 为用户添加永久 PATH 环境变量
+        echo [INFO] Adding PowerShell to user PATH...
+        call setx PATH "!POWERSHELL_PATH!;%PATH%" >nul 2>&1
+        echo [OK] PowerShell added to PATH. Please restart your terminal.
+    ) else (
+        echo [WARN] Could not find powershell.exe on this system.
+        echo        If you encounter playback issues with some NetEase songs,
+        echo        run: set PATH=%%PATH%%;C:\Windows\System32\WindowsPowerShell\v1.0\
+        echo        before running scripts\start.bat
+    )
+) else (
+    echo [OK] PowerShell found in PATH.
+)
+echo.
+
+:: ============================================================
+:: Verify build outputs
+:: ============================================================
+echo Verifying build outputs...
+set "BUILD_OK=1"
+
+if not exist "dist" (
+    call :error "dist/ directory missing after build."
+    set "BUILD_OK=0"
+)
+if not exist "web\dist" (
+    call :error "web\dist/ directory missing after build."
+    set "BUILD_OK=0"
+)
+
+if "!BUILD_OK!"=="0" (
+    echo Build completed but expected output is missing.
+    pause
+    exit /b 1
+)
+echo [OK] Build outputs verified.
+echo.
+
+if not exist "config.json" (
+    echo [INFO] config.json will be auto-generated on first launch.
+) else (
+    echo [OK] config.json already exists.
+)
+echo.
+
+:: ============================================================
+:: Done
+:: ============================================================
+call :log "Setup completed successfully at %date% %time%"
+
+echo ============================================
+echo   Setup Complete!
+echo ============================================
+echo.
+echo Next steps:
+echo   1. Run:  scripts\start.bat
+echo   2. Open: http://localhost:3000
+echo.
+echo Setup log: %LOG_FILE%
+echo.
+pause
+exit /b 0
+
+:: ============================================================
+:: Subroutines
+:: ============================================================
+:step
+echo ---- Step %~1: %~2 ----
+call :log ""
+call :log "---- Step %~1: %~2 ----"
+goto :eof
+
+:error
+echo.
+echo [ERROR] %~1
+call :log "[ERROR] %~1"
+goto :eof
+
+:log
+echo [%time%] %~1 >> "%LOG_FILE%"
+goto :eof
+

scripts/setup.sh

@@ -0,0 +1,182 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+#
+# TSMusicBot Setup Script (Linux/macOS)
+# - Auto-detect China network, switch to npmmirror
+# - Download native binaries from CDN (避开 GitHub)
+# - One-click setup, same as setup.bat for Windows
+#
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+LOG_FILE="$PROJECT_DIR/setup.log"
+
+echo "============================================"
+echo "  TSMusicBot - First-Time Setup (Linux)"
+echo "============================================"
+echo ""
+echo "Log file: $LOG_FILE"
+echo ""
+
+# ---- Check Node.js ----
+if ! command -v node &>/dev/null; then
+    echo "[ERROR] Node.js not found. Please install Node.js 20+ from https://nodejs.org"
+    echo "        or https://nodejs.cn/ (China mirror)."
+    exit 1
+fi
+echo "[OK] Node.js $(node -v)"
+
+# Newest Node major this project is regularly tested against. Anything above
+# still works, it just may have no prebuilt addons and fall back to a source build.
+TESTED_NODE_MAJOR=22
+NODE_MAJOR="$(node -p 'process.versions.node.split(".")[0]')"
+
+# The floor is not just a major version, so let node decide. Node 20 was dropped:
+# better-sqlite3 ships no prebuilt binary for its ABI (115) since 12.10.0, so every
+# Node 20 install needed Python and a C++ toolchain just to get off the ground
+# (issue #152). The odd majors (21 / 23) are excluded by better-sqlite3 and vitest.
+# Keep in sync with package.json "engines".
+if ! node -e 'const v=process.versions.node.split(".").map(Number); process.exit((v[0]===22&&v[1]>=12)||v[0]>=24?0:1)'; then
+    echo "[ERROR] Node.js $(node -v) is not supported. Use Node 22.12+ LTS or newer."
+    echo "        https://nodejs.org/  |  https://nodejs.cn/"
+    exit 1
+fi
+if [ "$NODE_MAJOR" -gt "$TESTED_NODE_MAJOR" ]; then
+    echo "[WARN] Node $(node -v) is newer than the tested LTS line (Node 22)."
+    echo "       新版 Node 可能没有现成的 opus / better-sqlite3 预编译包,"
+    echo "       安装时会自动改用源码编译,需要 C/C++ 构建工具,速度较慢。"
+    echo "       This is only a warning - setup builds the binaries for $(node -v) either way."
+fi
+
+if ! command -v npm &>/dev/null; then
+    echo "[ERROR] npm not found."
+    exit 1
+fi
+echo "[OK] npm v$(npm -v)"
+echo ""
+
+# ---- Detect China network ----
+USE_MIRROR=0
+MIRROR_REGISTRY="https://registry.npmjs.org"
+CDN_MIRROR=""
+
+echo "Testing connection to npm registry..."
+if ping -c 1 -W 4 registry.npmjs.org &>/dev/null; then
+    echo "[OK] npm registry reachable."
+else
+    echo "[WARN] Cannot reach npm registry, using China mirror."
+    USE_MIRROR=1
+fi
+
+if [ "$USE_MIRROR" = "1" ]; then
+    echo "[INFO] Using China mirror (npmmirror.com)"
+    MIRROR_REGISTRY="https://registry.npmmirror.com"
+    CDN_MIRROR="https://cdn.npmmirror.com/binaries"
+    export npm_config_registry="$MIRROR_REGISTRY"
+fi
+echo ""
+
+# ---- Check build tools (needed for native module fallback) ----
+if ! command -v gcc &>/dev/null && ! command -v clang &>/dev/null; then
+    echo "[INFO] No C compiler found. If CDN binaries are unavailable,"
+    echo "       native modules may fail. Install build tools:"
+    echo "       sudo apt install build-essential  (Ubuntu/Debian)"
+    echo "       sudo yum groupinstall 'Development Tools'  (CentOS/RHEL)"
+    echo ""
+fi
+
+# ---- Step 1: Install dependencies (skip GitHub binaries) ----
+echo "---- 1/5: Installing Node.js dependencies ----"
+echo ""
+
+cd "$PROJECT_DIR"
+npm install --registry="$MIRROR_REGISTRY" --ignore-scripts 2>&1 | tee -a "$LOG_FILE"
+echo "[OK] Dependencies installed."
+echo ""
+
+# ---- Step 2: Verify / download / repair native binaries (ABI aware) ----
+echo "---- 2/5: Checking native binaries ----"
+echo ""
+
+# The old `if node ... | tee ...` only printed a [WARN] and carried on, so a
+# broken native module still produced a "Setup Complete!" banner. It also read
+# the *pipeline's* status: `set -o pipefail` above happens to surface node's
+# failure, but a failing `tee` (unwritable log) was indistinguishable from a
+# failing node. PIPESTATUS[0] is exactly node's own exit code, nothing else.
+set +e
+node scripts/download-binaries.mjs $CDN_MIRROR 2>&1 | tee -a "$LOG_FILE"
+BIN_STATUS=${PIPESTATUS[0]}
+set -e
+
+if [ "$BIN_STATUS" -ne 0 ]; then
+    echo ""
+    echo "[ERROR] A required native module (@discordjs/opus / better-sqlite3) is unusable."
+    echo "        必需的原生模块不可用,安装中止。原因见上面的 [binary] 输出。"
+    echo "        Log: $LOG_FILE"
+    exit 1
+fi
+# ffmpeg-static failures are only a WARN inside the script above (a system
+# ffmpeg on PATH is a supported fallback), so reaching here means we are good.
+echo "[OK] Native binaries ready for $(node -v)."
+echo ""
+
+# ---- Step 3: Install web panel dependencies ----
+echo "---- 3/5: Installing web panel dependencies ----"
+echo ""
+
+if [ -f "web/package.json" ]; then
+    cd "$PROJECT_DIR/web"
+    npm install --registry="$MIRROR_REGISTRY" 2>&1 | tee -a "$LOG_FILE"
+    cd "$PROJECT_DIR"
+    echo "[OK] Web panel dependencies installed."
+else
+    echo "[SKIP] web/package.json not found."
+fi
+echo ""
+
+# ---- Step 4: Build project ----
+echo "---- 4/5: Building project ----"
+echo ""
+
+npm run build 2>&1 | tee -a "$LOG_FILE"
+echo "[OK] Build succeeded."
+echo ""
+
+# ---- Step 5: Verify ----
+echo "---- 5/5: Verifying build ----"
+echo ""
+
+BUILD_OK=1
+if [ ! -d "dist" ]; then
+    echo "[ERROR] dist/ directory missing."
+    BUILD_OK=0
+fi
+if [ -d "web" ] && [ ! -d "web/dist" ]; then
+    echo "[ERROR] web/dist/ directory missing."
+    BUILD_OK=0
+fi
+
+if [ "$BUILD_OK" = "0" ]; then
+    echo "Build completed but expected output is missing."
+    exit 1
+fi
+echo "[OK] Build outputs verified."
+echo ""
+
+if [ ! -f "config.json" ]; then
+    echo "[INFO] config.json will be auto-generated on first launch."
+fi
+echo ""
+
+echo "============================================"
+echo "  Setup Complete!"
+echo "============================================"
+echo ""
+echo "Next steps:"
+echo "  1. Run:  npm start"
+echo "  2. Open: http://localhost:3000"
+echo ""
+echo "Setup log: $LOG_FILE"
+echo ""
+

scripts/smoke_issue51.sh

@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+# Smoke test for issue #51 — run AFTER you start the bot from temp/preview-merge
+# (or from main once both PRs are merged).
+#
+# Usage: ./scripts/smoke_issue51.sh [HOST]
+# Default HOST is http://127.0.0.1:3000
+
+set -e
+HOST="${1:-http://127.0.0.1:3000}"
+PASS=0
+FAIL=0
+note() { echo -e "\n=== $* ==="; }
+ok()   { echo "  [PASS] $*"; PASS=$((PASS+1)); }
+bad()  { echo "  [FAIL] $*"; FAIL=$((FAIL+1)); }
+
+# ---- Album search ----------------------------------------------------------
+note "1. /api/music/search/all returns {songs,albums,playlists}"
+
+RES=$(curl.exe -s "$HOST/api/music/search/all?q=%E5%91%A8%E6%9D%B0%E4%BC%A6") # 周杰伦
+KEYS=$(echo "$RES" | python3 -c "import json,sys;d=json.load(sys.stdin);print(','.join(sorted(d.keys())))")
+if [ "$KEYS" = "albums,playlists,songs" ]; then ok "keys = $KEYS"; else bad "keys = $KEYS (expected albums,playlists,songs)"; fi
+
+NA=$(echo "$RES" | python3 -c "import json,sys;d=json.load(sys.stdin);print(len(d.get('albums',[])))")
+NS=$(echo "$RES" | python3 -c "import json,sys;d=json.load(sys.stdin);print(len(d.get('songs',[])))")
+NP=$(echo "$RES" | python3 -c "import json,sys;d=json.load(sys.stdin);print(len(d.get('playlists',[])))")
+echo "  songs=$NS, albums=$NA, playlists=$NP"
+if [ "$NA" -gt 0 ]; then ok "albums populated"; else bad "albums empty (expected >0 for 周杰伦)"; fi
+if [ "$NS" -gt 0 ]; then ok "songs populated"; fi
+
+# ---- Album detail playback path -------------------------------------------
+note "2. /api/music/album/:id returns songs"
+
+if [ "$NA" -gt 0 ]; then
+  ALBUM_ID=$(echo "$RES" | python3 -c "import json,sys;d=json.load(sys.stdin);a=d['albums'][0];print(a['id'])")
+  PLATFORM=$(echo "$RES" | python3 -c "import json,sys;d=json.load(sys.stdin);a=d['albums'][0];print(a['platform'])")
+  echo "  testing album id=$ALBUM_ID platform=$PLATFORM"
+  ASONGS=$(curl.exe -s "$HOST/api/music/album/$ALBUM_ID?platform=$PLATFORM" | python3 -c "import json,sys;d=json.load(sys.stdin);print(len(d.get('songs',[])))" 2>/dev/null || echo 0)
+  if [ "$ASONGS" -gt 0 ]; then ok "album returned $ASONGS songs"; else bad "album endpoint returned 0 songs"; fi
+else
+  echo "  (skipped — no albums to test)"
+fi
+
+# ---- Avatar API ------------------------------------------------------------
+note "3. avatar GET 404 on bot with no avatar"
+
+BOT_ID=$(curl.exe -s "$HOST/api/bot" | python3 -c "import json,sys;d=json.load(sys.stdin);bots=d.get('bots',[]);print(bots[0]['id'] if bots else '')")
+if [ -z "$BOT_ID" ]; then bad "no bot found — create a bot first"; exit 1; fi
+echo "  using bot $BOT_ID"
+
+curl.exe -s -o /dev/null -w "%{http_code}" "$HOST/api/bot/$BOT_ID/avatar" > /tmp/code
+CODE=$(cat /tmp/code)
+if [ "$CODE" = "404" ] || [ "$CODE" = "200" ]; then ok "GET initial state = $CODE"; else bad "unexpected GET status $CODE"; fi
+
+note "4. avatar PUT 200 + GET 200 round-trip"
+# 1×1 transparent PNG (67 bytes)
+TINY_PNG_B64="iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII="
+PUT_RES=$(curl.exe -s -X PUT "$HOST/api/bot/$BOT_ID/avatar" -H "Content-Type: application/json" \
+  -d "{\"dataUrl\":\"data:image/png;base64,$TINY_PNG_B64\"}")
+echo "  PUT response: $PUT_RES"
+GOT_PATH=$(echo "$PUT_RES" | python3 -c "import json,sys;d=json.load(sys.stdin);print(d.get('path',''))" 2>/dev/null || echo "")
+if [ "$GOT_PATH" = "$BOT_ID.png" ]; then ok "PUT returned path=$GOT_PATH"; else bad "PUT path = $GOT_PATH (expected $BOT_ID.png)"; fi
+
+curl.exe -s -o /tmp/avatar_check.png -w "%{http_code}" "$HOST/api/bot/$BOT_ID/avatar" > /tmp/code
+CODE=$(cat /tmp/code)
+SIZE=$(wc -c < /tmp/avatar_check.png)
+if [ "$CODE" = "200" ] && [ "$SIZE" -gt 60 ]; then ok "GET returned 200, $SIZE bytes"; else bad "GET status=$CODE size=$SIZE"; fi
+
+note "5. avatar DELETE 204 + GET 404"
+curl.exe -s -X DELETE "$HOST/api/bot/$BOT_ID/avatar" -o /dev/null -w "%{http_code}" > /tmp/code
+CODE=$(cat /tmp/code)
+if [ "$CODE" = "204" ]; then ok "DELETE returned 204"; else bad "DELETE status = $CODE"; fi
+
+curl.exe -s -o /dev/null -w "%{http_code}" "$HOST/api/bot/$BOT_ID/avatar" > /tmp/code
+CODE=$(cat /tmp/code)
+if [ "$CODE" = "404" ]; then ok "GET after DELETE returned 404"; else bad "GET after DELETE = $CODE"; fi
+
+note "6. avatar PUT rejects oversize (>200KB)"
+BIG_B64=$(node -e "console.log(Buffer.alloc(210*1024,7).toString('base64'))")
+curl.exe -s -o /dev/null -w "%{http_code}" -X PUT "$HOST/api/bot/$BOT_ID/avatar" \
+  -H "Content-Type: application/json" -d "{\"dataUrl\":\"data:image/png;base64,$BIG_B64\"}" > /tmp/code
+CODE=$(cat /tmp/code)
+if [ "$CODE" = "413" ]; then ok "oversize rejected with 413"; else bad "oversize status = $CODE (expected 413)"; fi
+
+note "7. avatar PUT rejects bad MIME (image/gif)"
+GIF_B64="R0lGODlhAQABAAAAACw="  # tiny gif
+curl.exe -s -o /dev/null -w "%{http_code}" -X PUT "$HOST/api/bot/$BOT_ID/avatar" \
+  -H "Content-Type: application/json" -d "{\"dataUrl\":\"data:image/gif;base64,$GIF_B64\"}" > /tmp/code
+CODE=$(cat /tmp/code)
+if [ "$CODE" = "400" ]; then ok "bad MIME rejected with 400"; else bad "bad MIME status = $CODE (expected 400)"; fi
+
+# ---------------------------------------------------------------------------
+echo ""
+echo "============================================="
+echo "SMOKE RESULT: $PASS passed, $FAIL failed"
+echo "============================================="
+[ "$FAIL" -eq 0 ]

scripts/start.bat

@@ -1,47 +1,60 @@
-@echo off
-title TSMusicBot
-echo Starting TSMusicBot...
-echo.
-
-:: Check if node is available
-where node >nul 2>&1
-if %errorlevel% neq 0 (
-    echo Node.js is not installed.
-    echo Run scripts\setup.bat for automatic installation, or install Node.js 20+ from https://nodejs.org
-    pause
-    exit /b 1
-)
-
-:: Resolve project root (one level up from scripts/)
-cd /d "%~dp0.."
-
-:: Install dependencies if needed
-if not exist "node_modules" (
-    echo Installing dependencies...
-    call npm install --production
-    if %errorlevel% neq 0 (
-        echo Failed to install dependencies.
-        pause
-        exit /b 1
-    )
-)
-
-:: Build if dist/ doesn't exist
-if not exist "dist" (
-    echo Building project...
-    call npx tsc
-    if %errorlevel% neq 0 (
-        echo Build failed.
-        pause
-        exit /b 1
-    )
-)
-
-:: FFmpeg is bundled via ffmpeg-static — no PATH check needed.
-echo FFmpeg is bundled via node_modules (ffmpeg-static).
-echo.
-
-:: Start the application
-node dist/index.js
-
-pause
+@echo off
+title TSMusicBot
+echo Starting TSMusicBot...
+echo.
+
+:: Check if node is available
+where node >nul 2>&1
+if %errorlevel% neq 0 (
+    echo Node.js is not installed.
+    echo Run scripts\setup.bat first.
+    pause
+    exit /b 1
+)
+
+:: Resolve project root (one level up from scripts/)
+cd /d "%~dp0.."
+
+:: Check if dependencies are installed
+if not exist "node_modules" (
+    echo Dependencies not found. Please run scripts\setup.bat first.
+    pause
+    exit /b 1
+)
+
+:: Check if build output exists
+if not exist "dist" (
+    echo Build not found. Please run scripts\setup.bat first.
+    pause
+    exit /b 1
+)
+
+:: Preflight: do the compiled native modules match THIS Node version?
+:: Switching Node majors after setup leaves node_modules built for the old ABI;
+:: without this check the bot dies mid-startup with a NODE_MODULE_VERSION stack.
+:: check-native.mjs prints the bilingual explanation itself; keep the lines in
+:: this block pure ASCII (cmd.exe garbles multi-byte text inside blocks).
+node scripts\check-native.mjs
+if errorlevel 1 (
+    echo.
+    echo Please run scripts\setup.bat to rebuild the native modules.
+    pause
+    exit /b 1
+)
+
+:: Ensure PowerShell is in PATH (fix for jdymusic CDN playback on some systems)
+where powershell >nul 2>&1
+if errorlevel 1 (
+    if exist "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" (
+        set "PATH=%PATH%;C:\Windows\System32\WindowsPowerShell\v1.0\"
+    )
+)
+
+:: Start the application
+echo WebUI: http://localhost:3000
+echo Press Ctrl+C to stop.
+echo.
+node dist/index.js
+
+pause
+

scripts/test_bot_remove.py

@@ -0,0 +1,99 @@
+"""Regression: DELETE /api/bot/:id must broadcast botRemoved so the UI drops the row.
+
+Creates an ephemeral bot, opens the dropdown, deletes the bot via API, and
+asserts the row disappears without any page reload. Does not touch any
+existing user bot.
+"""
+import time
+import requests
+from playwright.sync_api import sync_playwright
+
+BASE = "http://localhost:3000"
+EPHEMERAL_NAME = "rmbot_test"
+EPHEMERAL_NICK = "RmBotTest"
+
+
+def api(path, method="GET", **kw):
+    r = getattr(requests, method.lower())(f"{BASE}{path}", timeout=10, **kw)
+    r.raise_for_status()
+    return r.json() if r.text else None
+
+
+def cleanup():
+    for b in api("/api/bot/")["bots"]:
+        if b["name"] == EPHEMERAL_NAME:
+            try:
+                api(f"/api/bot/{b['id']}", method="DELETE")
+            except Exception:
+                pass
+
+
+def main():
+    cleanup()
+    new = api(
+        "/api/bot/",
+        method="POST",
+        json={
+            "name": EPHEMERAL_NAME,
+            "serverAddress": "127.0.0.1",
+            "serverPort": 9987,
+            "nickname": EPHEMERAL_NICK,
+            "autoStart": False,
+        },
+    )
+    bot_id = new["id"]
+    print(f"[setup] created ephemeral bot {bot_id[:8]}")
+
+    try:
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True)
+            try:
+                page = browser.new_page(viewport={"width": 1440, "height": 900})
+                page.goto(BASE)
+                page.wait_for_load_state("networkidle")
+                time.sleep(0.8)
+
+                # Open dropdown and confirm the new bot row is present
+                page.locator(".bot-selector-btn").click()
+                page.wait_for_selector(".bot-dropdown")
+                rows_before = page.locator(".bot-dropdown-row").count()
+                print(f"[ui] dropdown rows before remove: {rows_before}")
+
+                # Match the ephemeral row by its name text
+                present = (
+                    page.locator(".bot-dropdown-row", has_text=EPHEMERAL_NAME).count()
+                )
+                assert present == 1, f"ephemeral row not found (got {present})"
+
+                # Delete via API
+                api(f"/api/bot/{bot_id}", method="DELETE")
+                print("[api] deleted bot")
+
+                # Wait up to 4s for UI to drop the row
+                removed = False
+                for _ in range(40):
+                    if (
+                        page.locator(
+                            ".bot-dropdown-row", has_text=EPHEMERAL_NAME
+                        ).count()
+                        == 0
+                    ):
+                        removed = True
+                        break
+                    time.sleep(0.1)
+
+                rows_after = page.locator(".bot-dropdown-row").count()
+                print(f"[ui] dropdown rows after remove: {rows_after}")
+                assert removed, "ephemeral row did not disappear from UI after DELETE"
+                assert rows_after == rows_before - 1, (
+                    f"row count mismatch: before={rows_before} after={rows_after}"
+                )
+                print("[PASS] bot removal propagates to UI via WS")
+            finally:
+                browser.close()
+    finally:
+        cleanup()
+
+
+if __name__ == "__main__":
+    main()

scripts/test_corner_cases.py

@@ -0,0 +1,171 @@
+"""Corner case regressions that go beyond Bugs A/B/C.
+
+A. Race — disconnect() called during connect()'s awaited handshake must
+   NOT leave the bot reporting connected=true afterwards.
+
+B. Config-only commands (vol, mode, clear) must work even when the bot is
+   disconnected (UI should stay usable while the bot is offline).
+
+C. After a disconnect mid-playback, the player must not be able to
+   auto-advance to the next queued song (trackEnd → resolveAndPlay).
+"""
+import time
+import threading
+import requests
+
+BASE = "http://localhost:3000"
+
+
+def api(path, method="GET", **kw):
+    return getattr(requests, method.lower())(f"{BASE}{path}", timeout=30, **kw)
+
+
+def get_bot(bot_id):
+    return next(b for b in api("/api/bot/").json()["bots"] if b["id"] == bot_id)
+
+
+def wait_connected(bot_id, want, timeout=15):
+    end = time.time() + timeout
+    while time.time() < end:
+        if get_bot(bot_id)["connected"] is want:
+            return True
+        time.sleep(0.1)
+    return False
+
+
+def test_config_commands_when_disconnected(bot_id):
+    """B. vol/mode/clear should succeed while bot is disconnected."""
+    api(f"/api/bot/{bot_id}/stop", method="POST")
+    wait_connected(bot_id, False)
+
+    # volume is the simplest config-only command
+    r = api(
+        f"/api/player/{bot_id}/volume",
+        method="POST",
+        json={"volume": 60},
+    )
+    assert r.status_code == 200, f"volume failed while disconnected: {r.status_code} {r.text[:100]}"
+
+    r = api(
+        f"/api/player/{bot_id}/mode",
+        method="POST",
+        json={"mode": "seq"},
+    )
+    assert r.status_code == 200, f"mode failed while disconnected: {r.status_code} {r.text[:100]}"
+
+    r = api(f"/api/player/{bot_id}/clear", method="POST")
+    assert r.status_code == 200, f"clear failed while disconnected: {r.status_code} {r.text[:100]}"
+
+    print("[PASS] config commands (vol/mode/clear) work when disconnected")
+
+
+def test_play_rejected_when_disconnected(bot_id):
+    """B (negative). play/add/next/prev should still be rejected."""
+    r = api(
+        f"/api/player/{bot_id}/play",
+        method="POST",
+        json={"query": "test", "platform": "netease"},
+    )
+    assert r.status_code >= 400, f"play should fail while disconnected"
+
+    r = api(
+        f"/api/player/{bot_id}/add",
+        method="POST",
+        json={"query": "test", "platform": "netease"},
+    )
+    assert r.status_code >= 400, f"add should fail while disconnected"
+
+    r = api(f"/api/player/{bot_id}/next", method="POST")
+    assert r.status_code >= 400, f"next should fail while disconnected"
+
+    print("[PASS] audio commands (play/add/next) rejected when disconnected")
+
+
+def test_disconnect_during_connect_race(bot_id):
+    """A. disconnect() called while connect() is awaiting must win the race.
+
+    Fires a stop 200ms into a start call; after things settle the bot's
+    connected state must be stable (either cleanly disconnected, or cleanly
+    connected if the stop happened after connect completed). It must NOT
+    end up in a weird state where connected=true but a subsequent query
+    shows inconsistent data.
+    """
+    # Ensure disconnected first
+    api(f"/api/bot/{bot_id}/stop", method="POST")
+    wait_connected(bot_id, False)
+    time.sleep(1)  # give TS server a moment to forget us
+
+    def delayed_stop():
+        time.sleep(0.2)
+        try:
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+        except Exception:
+            pass
+
+    threading.Thread(target=delayed_stop, daemon=True).start()
+    try:
+        r = api(f"/api/bot/{bot_id}/start", method="POST")
+    except Exception as e:
+        r = None
+        print(f"[info] start threw: {e}")
+
+    # Wait for all state transitions to settle
+    time.sleep(2)
+
+    b = get_bot(bot_id)
+    # The key invariant: if connected is false, playing must also be false;
+    # if connected is true, the transport is actually up (we can issue
+    # another command without error).
+    assert not (b["connected"] is False and b["playing"] is True), (
+        f"inconsistent state: connected={b['connected']} playing={b['playing']}"
+    )
+    print(
+        f"[PASS] disconnect-during-connect race — final state consistent "
+        f"(connected={b['connected']} playing={b['playing']})"
+    )
+
+
+def test_resolve_guard(bot_id):
+    """C. resolveAndPlay on a disconnected bot is a no-op.
+
+    We can't directly invoke resolveAndPlay from the API, but we can
+    verify by checking that after a stop, the bot stays idle even if we
+    wait for a trackEnd-like event to fire.
+    """
+    api(f"/api/bot/{bot_id}/stop", method="POST")
+    wait_connected(bot_id, False)
+    time.sleep(1.5)  # more than a frame cycle
+    b = get_bot(bot_id)
+    assert not b["playing"], (
+        f"player should stay stopped after disconnect: {b}"
+    )
+    print("[PASS] player stays idle after disconnect (no ghost autoplay)")
+
+
+def main():
+    bots = api("/api/bot/").json()["bots"]
+    if not bots:
+        print("[skip] no bots")
+        return
+    bot_id = bots[0]["id"]
+    initial = bots[0]["connected"]
+    print(f"[init] bot={bot_id[:8]} initial connected={initial}")
+
+    try:
+        test_config_commands_when_disconnected(bot_id)
+        test_play_rejected_when_disconnected(bot_id)
+        test_resolve_guard(bot_id)
+        test_disconnect_during_connect_race(bot_id)
+        print("ALL GREEN")
+    finally:
+        if initial:
+            api(f"/api/bot/{bot_id}/start", method="POST")
+            wait_connected(bot_id, True)
+        else:
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+            wait_connected(bot_id, False)
+        print(f"[restore] connected={get_bot(bot_id)['connected']}")
+
+
+if __name__ == "__main__":
+    main()

scripts/test_full_feature.py

@@ -0,0 +1,852 @@
+"""Comprehensive feature + corner-case test for TSMusicBot against a
+local TeamSpeak 3 server.
+
+Exercises every major HTTP endpoint, the WebSocket state-broadcast path,
+all music providers, bot lifecycle transitions, and a handful of races
+that have burned us in the past. Designed to be safe to run against a
+real installation: captures the target bot's initial connected/volume/
+mode settings and restores them in `finally`.
+
+Usage:
+    "C:/Users/saopig1/miniforge3/python.exe" scripts/test_full_feature.py
+
+Exit code: 0 if every non-skipped test passed, 1 otherwise.
+"""
+from __future__ import annotations
+
+import json
+import threading
+import time
+from dataclasses import dataclass
+from typing import Any
+
+import requests
+
+BASE = "http://localhost:3000"
+POLL_INTERVAL = 0.15
+CONNECT_TIMEOUT = 20        # tolerate occasional TS3 anti-flood grace
+ANTIFLOOD_BREATHER = 1.5    # gap between rapid cycles so TS3 stays happy
+
+
+# ----------------------------- HTTP helpers ---------------------------------
+
+
+def api(path: str, method: str = "GET", json_body: Any = None):
+    """Return (status_code, body). Never raises."""
+    try:
+        fn = getattr(requests, method.lower())
+        r = fn(f"{BASE}{path}", json=json_body, timeout=30)
+        try:
+            return r.status_code, r.json()
+        except Exception:
+            return r.status_code, r.text
+    except Exception as e:
+        return None, f"<{type(e).__name__}: {e}>"
+
+
+def get_bot(bot_id: str) -> dict | None:
+    _, data = api("/api/bot/")
+    if not isinstance(data, dict):
+        return None
+    return next((b for b in data.get("bots", []) if b["id"] == bot_id), None)
+
+
+def wait_connected(bot_id: str, want: bool, timeout: float = CONNECT_TIMEOUT) -> bool:
+    end = time.time() + timeout
+    while time.time() < end:
+        b = get_bot(bot_id)
+        if b is not None and b["connected"] is want:
+            return True
+        time.sleep(POLL_INTERVAL)
+    return False
+
+
+def start_and_wait(bot_id: str, retries: int = 2) -> bool:
+    """Start the bot, tolerating transient TS3 anti-flood by retrying with
+    exponential backoff. Returns True only when the bot reports connected."""
+    for attempt in range(retries + 1):
+        s, _ = api(f"/api/bot/{bot_id}/start", method="POST")
+        if s == 200 and wait_connected(bot_id, True):
+            return True
+        # If /start returned an error (e.g. connect timeout from our 15s
+        # deadline), back off and retry — TS3 server-side anti-flood
+        # usually clears in a few seconds.
+        if attempt < retries:
+            time.sleep(3.0 * (attempt + 1))
+            # Make sure we're fully stopped before the next attempt so
+            # oldBot.disconnect() doesn't double-fire
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+            wait_connected(bot_id, False, timeout=5)
+    return False
+
+
+def stop_and_wait(bot_id: str) -> bool:
+    api(f"/api/bot/{bot_id}/stop", method="POST")
+    return wait_connected(bot_id, False)
+
+
+def assert_started(bot_id: str):
+    """Helper that raises with a clear message when start fails so test
+    output points at 'could not connect' rather than an empty assertion."""
+    if not start_and_wait(bot_id):
+        raise AssertionError(
+            "could not bring bot online (TS3 server may be anti-flooding "
+            "or unreachable)"
+        )
+
+
+# ----------------------------- test runner ----------------------------------
+
+
+@dataclass
+class TestResult:
+    name: str
+    status: str  # PASS / FAIL / ERROR / SKIP
+    detail: str = ""
+
+
+passed = 0
+failed = 0
+skipped = 0
+results: list[TestResult] = []
+
+
+def run(name: str, fn):
+    global passed, failed
+    try:
+        fn()
+        print(f"  [PASS] {name}")
+        passed += 1
+        results.append(TestResult(name, "PASS"))
+    except AssertionError as e:
+        print(f"  [FAIL] {name}: {e}")
+        failed += 1
+        results.append(TestResult(name, "FAIL", str(e)))
+    except Exception as e:
+        print(f"  [ERROR] {name}: {type(e).__name__}: {e}")
+        failed += 1
+        results.append(TestResult(name, "ERROR", f"{type(e).__name__}: {e}"))
+
+
+def skip(name: str, reason: str):
+    global skipped
+    print(f"  [SKIP] {name}  ({reason})")
+    skipped += 1
+    results.append(TestResult(name, "SKIP", reason))
+
+
+# ----------------------------- test groups ----------------------------------
+
+
+def group_infrastructure(bot_id: str):
+    print("\n== infrastructure ==")
+
+    def t_health():
+        s, d = api("/api/health")
+        assert s == 200, f"health returned {s}"
+        assert d.get("status") == "ok"
+    run("GET /api/health", t_health)
+
+    def t_list_bots():
+        s, d = api("/api/bot/")
+        assert s == 200
+        assert isinstance(d.get("bots"), list)
+        assert any(b["id"] == bot_id for b in d["bots"])
+    run("GET /api/bot/ lists target bot", t_list_bots)
+
+    def t_bot_config():
+        s, d = api(f"/api/bot/{bot_id}/config")
+        assert s == 200
+        assert d["id"] == bot_id
+        assert "identity" in d
+        assert "serverAddress" in d and "nickname" in d
+        assert "serverPassword" in d, "serverPassword field missing"
+    run("GET /api/bot/:id/config returns all fields", t_bot_config)
+
+    def t_404_on_unknown_bot():
+        s, _ = api("/api/bot/does-not-exist/config")
+        assert s == 404
+    run("404 on unknown bot id", t_404_on_unknown_bot)
+
+    def t_quality_shape():
+        s, d = api("/api/music/quality")
+        assert s == 200
+        for p in ("netease", "qq", "bilibili"):
+            assert p in d, f"{p} missing from quality response"
+    run("GET /api/music/quality shape", t_quality_shape)
+
+
+def group_auth_status():
+    print("\n== auth status per platform ==")
+
+    def t_netease_ok():
+        s, d = api("/api/auth/status?platform=netease")
+        assert s == 200
+        assert d.get("platform") == "netease"
+        assert "loggedIn" in d
+    run("auth status netease", t_netease_ok)
+
+    def t_qq_ok():
+        s, d = api("/api/auth/status?platform=qq")
+        assert s == 200
+        assert d.get("platform") == "qq"
+    run("auth status qq", t_qq_ok)
+
+    def t_bilibili_ok():
+        s, d = api("/api/auth/status?platform=bilibili")
+        assert s == 200
+        assert d.get("platform") == "bilibili"
+    run("auth status bilibili", t_bilibili_ok)
+
+    def t_youtube_routed():
+        # Regression: /auth/status?platform=youtube used to fall through
+        # to NetEase and leak the NetEase user's nickname/avatar.
+        s, d = api("/api/auth/status?platform=youtube")
+        assert s == 200
+        assert d.get("platform") == "youtube", (
+            f"youtube auth status leaked to {d.get('platform')}"
+        )
+    run("auth status youtube routes correctly", t_youtube_routed)
+
+    def t_youtube_cookie_rejected():
+        s, d = api(
+            "/api/auth/cookie",
+            method="POST",
+            json_body={"platform": "youtube", "cookie": "fake"},
+        )
+        assert s == 400, f"youtube cookie should be rejected, got {s}: {d}"
+    run("POST /auth/cookie rejects youtube", t_youtube_cookie_rejected)
+
+
+def group_search():
+    print("\n== multi-platform search ==")
+
+    def search(platform: str, query: str = "test"):
+        return api(f"/api/music/search?q={query}&platform={platform}&limit=1")
+
+    def t_netease():
+        s, d = search("netease")
+        assert s == 200
+        assert isinstance(d.get("songs"), list)
+    run("netease search", t_netease)
+
+    def t_qq():
+        s, d = search("qq")
+        assert s == 200
+        # QQ may return 0 results if no cookie, but shouldn't error
+        assert isinstance(d.get("songs"), list)
+    run("qq search (empty ok)", t_qq)
+
+    def t_bilibili():
+        s, d = search("bilibili")
+        assert s == 200
+        assert isinstance(d.get("songs"), list)
+    run("bilibili search", t_bilibili)
+
+    def t_missing_query():
+        s, _ = api("/api/music/search?platform=netease")
+        assert s == 400, "missing q should 400"
+    run("400 on missing query", t_missing_query)
+
+    _, auth = api("/api/auth/status?platform=youtube")
+    youtube_available = isinstance(auth, dict) and auth.get("loggedIn") is True
+
+    if youtube_available:
+        def t_youtube():
+            s, d = search("youtube", "lofi")
+            assert s == 200
+            songs = d.get("songs", [])
+            assert len(songs) >= 1, "expected at least 1 YouTube result"
+            assert songs[0]["platform"] == "youtube"
+        run("youtube search (yt-dlp installed)", t_youtube)
+    else:
+        skip("youtube search", "yt-dlp not installed")
+
+
+def group_lifecycle(bot_id: str):
+    print("\n== connection lifecycle ==")
+
+    def t_stop_from_any_state():
+        api(f"/api/bot/{bot_id}/stop", method="POST")
+        assert wait_connected(bot_id, False), "bot did not stop"
+        b = get_bot(bot_id)
+        assert not b["playing"], "playing should be false after stop"
+    run("stop from any state \u2192 disconnected+idle", t_stop_from_any_state)
+
+    def t_start_completes_quickly():
+        t0 = time.time()
+        s, d = api(f"/api/bot/{bot_id}/start", method="POST")
+        elapsed = time.time() - t0
+        assert s == 200, f"start failed: {d}"
+        assert elapsed < 10, f"start took {elapsed:.1f}s (expected <10s)"
+        assert wait_connected(bot_id, True)
+    run("start completes well under 15s deadline", t_start_completes_quickly)
+
+    def t_identity_persists():
+        assert_started(bot_id)
+        _, cfg1 = api(f"/api/bot/{bot_id}/config")
+        id1 = cfg1["identity"]
+        assert id1, "identity empty after first start"
+        assert stop_and_wait(bot_id)
+        time.sleep(ANTIFLOOD_BREATHER)
+        assert_started(bot_id)
+        _, cfg2 = api(f"/api/bot/{bot_id}/config")
+        assert cfg2["identity"] == id1, (
+            f"identity changed across restart: {id1} \u2192 {cfg2['identity']}"
+        )
+    run("identity preserved across stop/start", t_identity_persists)
+
+
+def group_playback(bot_id: str):
+    print("\n== playback ==")
+
+    # Bring the bot online ONCE for the whole playback group, then only
+    # toggle player state (play/pause/stop) between tests. This keeps the
+    # TS3 reconnect count for this group at exactly 1.
+    assert_started(bot_id)
+
+    def t_play_song():
+        s, d = api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json_body={"query": "the mass", "platform": "netease"},
+        )
+        assert s == 200, f"play failed: {d}"
+        time.sleep(1.2)
+        b = get_bot(bot_id)
+        assert b["playing"] is True, f"not playing after /play: {b}"
+        assert b["currentSong"] is not None
+    run("play netease song \u2192 playing=true", t_play_song)
+
+    def t_pause_resume():
+        # Previous test left a song playing
+        api(f"/api/player/{bot_id}/pause", method="POST")
+        time.sleep(0.4)
+        b = get_bot(bot_id)
+        assert b["paused"] is True, f"pause failed: {b}"
+        api(f"/api/player/{bot_id}/resume", method="POST")
+        time.sleep(0.4)
+        b = get_bot(bot_id)
+        assert b["paused"] is False and b["playing"] is True, f"resume failed: {b}"
+    run("pause \u2192 paused, resume \u2192 playing", t_pause_resume)
+
+    def t_volume_change():
+        s, _ = api(
+            f"/api/player/{bot_id}/volume",
+            method="POST",
+            json_body={"volume": 42},
+        )
+        assert s == 200
+        time.sleep(0.2)
+        b = get_bot(bot_id)
+        assert b["volume"] == 42, f"volume not applied: {b['volume']}"
+    run("volume change", t_volume_change)
+
+    def t_mode_cycle():
+        for m in ("seq", "loop", "random", "rloop"):
+            s, _ = api(
+                f"/api/player/{bot_id}/mode", method="POST", json_body={"mode": m}
+            )
+            assert s == 200
+            b = get_bot(bot_id)
+            assert b["playMode"] == m, f"mode {m} not applied: {b['playMode']}"
+    run("all four play modes apply", t_mode_cycle)
+
+    def t_queue_endpoint():
+        s, d = api(f"/api/player/{bot_id}/queue")
+        assert s == 200
+        assert isinstance(d.get("queue"), list)
+        assert "status" in d
+    run("GET /player/:id/queue returns queue+status", t_queue_endpoint)
+
+    def t_elapsed_endpoint():
+        s, d = api(f"/api/player/{bot_id}/elapsed")
+        assert s == 200
+        elapsed = d.get("elapsed")
+        assert isinstance(elapsed, (int, float)) and elapsed >= 0, (
+            f"elapsed should be non-negative number: {elapsed}"
+        )
+    run("GET /player/:id/elapsed returns finite number", t_elapsed_endpoint)
+
+    def t_add_autoplay_on_idle():
+        # This specific test needs an IDLE bot — stop first (but keep
+        # connected), then add and confirm auto-play.
+        api(f"/api/player/{bot_id}/stop", method="POST")
+        time.sleep(0.4)
+        b = get_bot(bot_id)
+        assert not b["playing"] and b["queueSize"] == 0, f"setup failed: {b}"
+        s, d = api(
+            f"/api/player/{bot_id}/add",
+            method="POST",
+            json_body={"query": "the mass", "platform": "netease"},
+        )
+        assert s == 200
+        msg = d.get("message", "") if isinstance(d, dict) else ""
+        assert "Now playing" in msg, (
+            f"add on idle bot should auto-play, got: {msg!r}"
+        )
+        time.sleep(0.8)
+        b = get_bot(bot_id)
+        assert b["playing"] is True, f"not playing after add: {b}"
+    run("add on idle bot auto-plays", t_add_autoplay_on_idle)
+
+    # Leave the bot in a clean state for the next group
+    api(f"/api/player/{bot_id}/stop", method="POST")
+
+
+def group_queue_ops(bot_id: str):
+    print("\n== queue operations ==")
+    assert_started(bot_id)
+
+    def t_clear():
+        api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json_body={"query": "the mass", "platform": "netease"},
+        )
+        time.sleep(0.8)
+        api(
+            f"/api/player/{bot_id}/add",
+            method="POST",
+            json_body={"query": "lemon tree", "platform": "netease"},
+        )
+        time.sleep(0.6)
+        b_before = get_bot(bot_id)
+        assert b_before["queueSize"] >= 2, f"expected \u22652 songs: {b_before}"
+        api(f"/api/player/{bot_id}/clear", method="POST")
+        time.sleep(0.4)
+        b_after = get_bot(bot_id)
+        assert b_after["queueSize"] == 0
+    run("clear queue empties it", t_clear)
+
+    def t_play_at_invalid_preserves_playback():
+        api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json_body={"query": "the mass", "platform": "netease"},
+        )
+        time.sleep(1.2)
+        assert get_bot(bot_id)["playing"]
+        s, _ = api(
+            f"/api/player/{bot_id}/play-at",
+            method="POST",
+            json_body={"index": 9999},
+        )
+        assert s == 400, f"invalid index should 400, got {s}"
+        time.sleep(0.4)
+        b = get_bot(bot_id)
+        assert b["playing"], "invalid play-at killed the current song"
+    run("invalid play-at preserves current playback", t_play_at_invalid_preserves_playback)
+
+    def t_play_at_negative_rejected():
+        s, _ = api(
+            f"/api/player/{bot_id}/play-at",
+            method="POST",
+            json_body={"index": -1},
+        )
+        assert s == 400
+    run("play-at with negative index rejected", t_play_at_negative_rejected)
+
+    api(f"/api/player/{bot_id}/stop", method="POST")
+
+
+def group_input_validation(bot_id: str):
+    print("\n== HTTP input validation ==")
+
+    def t_volume_out_of_range():
+        for bad in (150, -10, 1000, -1):
+            s, _ = api(
+                f"/api/player/{bot_id}/volume",
+                method="POST",
+                json_body={"volume": bad},
+            )
+            assert s == 400, f"volume={bad} should 400, got {s}"
+    run("volume out-of-range rejected (400)", t_volume_out_of_range)
+
+    def t_volume_wrong_type():
+        for bad in ("50", None, [50], {"v": 50}):
+            s, _ = api(
+                f"/api/player/{bot_id}/volume",
+                method="POST",
+                json_body={"volume": bad},
+            )
+            assert s == 400, f"volume={bad!r} should 400, got {s}"
+    run("volume wrong-type rejected (400)", t_volume_wrong_type)
+
+    def t_volume_missing():
+        s, _ = api(
+            f"/api/player/{bot_id}/volume", method="POST", json_body={}
+        )
+        assert s == 400
+    run("volume missing rejected (400)", t_volume_missing)
+
+    def t_volume_valid():
+        for good in (0, 1, 50, 100):
+            s, _ = api(
+                f"/api/player/{bot_id}/volume",
+                method="POST",
+                json_body={"volume": good},
+            )
+            assert s == 200, f"volume={good} should succeed, got {s}"
+            b = get_bot(bot_id)
+            assert b["volume"] == good, f"volume not applied: {b['volume']}"
+    run("valid volumes apply", t_volume_valid)
+
+    def t_mode_invalid():
+        for bad in ("bogus", "", None, 1, "SEQ"):
+            s, _ = api(
+                f"/api/player/{bot_id}/mode",
+                method="POST",
+                json_body={"mode": bad},
+            )
+            assert s == 400, f"mode={bad!r} should 400, got {s}"
+    run("mode invalid rejected (400)", t_mode_invalid)
+
+    def t_mode_missing():
+        s, _ = api(f"/api/player/{bot_id}/mode", method="POST", json_body={})
+        assert s == 400
+    run("mode missing rejected (400)", t_mode_missing)
+
+
+def group_disconnect_corners(bot_id: str):
+    print("\n== disconnected-bot corners ==")
+
+    def t_play_rejected():
+        assert stop_and_wait(bot_id)
+        s, d = api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json_body={"query": "x", "platform": "netease"},
+        )
+        assert s >= 400
+        err = (d.get("error") or "") if isinstance(d, dict) else ""
+        assert "not connected" in err.lower(), f"expected 'not connected' error: {d}"
+    run("play rejected while disconnected", t_play_rejected)
+
+    def t_add_rejected():
+        s, _ = api(
+            f"/api/player/{bot_id}/add",
+            method="POST",
+            json_body={"query": "x", "platform": "netease"},
+        )
+        assert s >= 400
+    run("add rejected while disconnected", t_add_rejected)
+
+    def t_next_rejected():
+        s, _ = api(f"/api/player/{bot_id}/next", method="POST")
+        assert s >= 400
+    run("next rejected while disconnected", t_next_rejected)
+
+    def t_volume_allowed():
+        s, _ = api(
+            f"/api/player/{bot_id}/volume",
+            method="POST",
+            json_body={"volume": 60},
+        )
+        assert s == 200, "volume should work while disconnected"
+    run("volume allowed while disconnected", t_volume_allowed)
+
+    def t_mode_allowed():
+        s, _ = api(
+            f"/api/player/{bot_id}/mode", method="POST", json_body={"mode": "random"}
+        )
+        assert s == 200, "mode should work while disconnected"
+    run("mode allowed while disconnected", t_mode_allowed)
+
+    def t_clear_allowed():
+        s, _ = api(f"/api/player/{bot_id}/clear", method="POST")
+        assert s == 200, "clear should work while disconnected"
+    run("clear allowed while disconnected", t_clear_allowed)
+
+    def t_player_state_clean():
+        b = get_bot(bot_id)
+        assert not b["playing"] and not b["paused"], f"state leak: {b}"
+    run("no player state leak while disconnected", t_player_state_clean)
+
+
+def group_seek(bot_id: str):
+    print("\n== seek validation ==")
+
+    def t_negative():
+        s, _ = api(
+            f"/api/player/{bot_id}/seek", method="POST", json_body={"position": -5}
+        )
+        assert s == 400
+    run("negative seek rejected", t_negative)
+
+    def t_string():
+        s, _ = api(
+            f"/api/player/{bot_id}/seek",
+            method="POST",
+            json_body={"position": "abc"},
+        )
+        assert s == 400
+    run("string seek rejected", t_string)
+
+    def t_nan_literal():
+        r = requests.post(
+            f"{BASE}/api/player/{bot_id}/seek",
+            data='{"position": NaN}',
+            headers={"Content-Type": "application/json"},
+            timeout=10,
+        )
+        assert r.status_code >= 400, f"NaN literal accepted: {r.status_code}"
+    run("NaN literal seek rejected", t_nan_literal)
+
+    def t_valid_seek():
+        # Seek needs a live connection + playing song. The disconnect-
+        # corners group right before this one left the bot disconnected.
+        assert_started(bot_id)
+        api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json_body={"query": "the mass", "platform": "netease"},
+        )
+        time.sleep(1.5)
+        s, _ = api(
+            f"/api/player/{bot_id}/seek",
+            method="POST",
+            json_body={"position": 25},
+        )
+        assert s == 200
+        time.sleep(0.5)
+        _, d = api(f"/api/player/{bot_id}/elapsed")
+        elapsed = d.get("elapsed")
+        assert isinstance(elapsed, (int, float)) and 24 <= elapsed < 40, (
+            f"elapsed after seek(25) wrong: {elapsed}"
+        )
+        api(f"/api/player/{bot_id}/stop", method="POST")
+    run("valid seek produces finite elapsed", t_valid_seek)
+
+
+def group_races(bot_id: str):
+    print("\n== race conditions ==")
+
+    def t_disconnect_during_connect():
+        assert stop_and_wait(bot_id)
+        time.sleep(ANTIFLOOD_BREATHER)
+
+        def delayed_stop():
+            time.sleep(0.2)
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+
+        threading.Thread(target=delayed_stop, daemon=True).start()
+        api(f"/api/bot/{bot_id}/start", method="POST")
+        time.sleep(2)
+        b = get_bot(bot_id)
+        assert not (b["connected"] is False and b["playing"] is True), (
+            f"inconsistent state: {b}"
+        )
+    run("disconnect during connect", t_disconnect_during_connect)
+
+    def t_stop_during_url_resolve():
+        assert stop_and_wait(bot_id)
+        time.sleep(ANTIFLOOD_BREATHER)
+        assert_started(bot_id)
+
+        def delayed_stop():
+            time.sleep(0.15)
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+
+        threading.Thread(target=delayed_stop, daemon=True).start()
+        api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json_body={"query": "the mass", "platform": "netease"},
+        )
+        time.sleep(3)
+        b = get_bot(bot_id)
+        assert not (b["connected"] is False and b["playing"] is True), (
+            f"inconsistent state: {b}"
+        )
+    run("stop during URL resolve", t_stop_during_url_resolve)
+
+    def t_rapid_volume_change():
+        # Volume is a config-only command and works while disconnected,
+        # so this test deliberately doesn't call assert_started — we're
+        # validating the API's last-write-wins behavior, not the TS
+        # transport. That also spares the TS3 anti-flood budget.
+        for v in (10, 25, 50, 75, 100, 1):
+            s, _ = api(
+                f"/api/player/{bot_id}/volume",
+                method="POST",
+                json_body={"volume": v},
+            )
+            assert s == 200, f"volume POST failed: {s}"
+        time.sleep(0.3)
+        b = get_bot(bot_id)
+        assert b["volume"] == 1, f"final volume wrong: {b['volume']}"
+    run("rapid volume changes converge", t_rapid_volume_change)
+
+
+def group_websocket(bot_id: str):
+    print("\n== websocket broadcasts ==")
+    try:
+        from websocket import create_connection
+    except Exception as e:
+        skip("websocket state broadcasts", f"websocket lib unavailable: {e}")
+        return
+
+    try:
+        ws = create_connection("ws://localhost:3000/ws", timeout=5)
+    except Exception as e:
+        skip("websocket state broadcasts", f"connect failed: {e}")
+        return
+
+    ws.settimeout(0.3)
+    messages: list[dict] = []
+    stop_reader = threading.Event()
+
+    def reader():
+        while not stop_reader.is_set():
+            try:
+                raw = ws.recv()
+                if not raw:
+                    break
+                try:
+                    messages.append(json.loads(raw))
+                except Exception:
+                    pass
+            except Exception:
+                # recv() timeout or closed — keep trying until stop_reader
+                if stop_reader.is_set():
+                    break
+                continue
+
+    reader_thread = threading.Thread(target=reader, daemon=True)
+    reader_thread.start()
+
+    try:
+        def t_init():
+            time.sleep(0.6)
+            types = [m.get("type") for m in messages]
+            assert "init" in types, f"no init message; got: {types}"
+        run("init message on connect", t_init)
+
+        def t_state_change_on_play():
+            assert_started(bot_id)
+            messages.clear()
+            api(
+                f"/api/player/{bot_id}/play",
+                method="POST",
+                json_body={"query": "the mass", "platform": "netease"},
+            )
+            time.sleep(1.5)
+            types = [m.get("type") for m in messages]
+            assert "stateChange" in types, (
+                f"no stateChange after play; got types: {types}"
+            )
+            api(f"/api/player/{bot_id}/stop", method="POST")
+        run("stateChange broadcast on play", t_state_change_on_play)
+
+        def t_bot_disconnected_event():
+            assert_started(bot_id)
+            messages.clear()
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+            time.sleep(1.5)
+            types = [m.get("type") for m in messages]
+            assert "botDisconnected" in types or "stateChange" in types, (
+                f"no disconnect event; got: {types}"
+            )
+        run("botDisconnected event on stop", t_bot_disconnected_event)
+    finally:
+        stop_reader.set()
+        try:
+            ws.close()
+        except Exception:
+            pass
+
+
+# ----------------------------- main ----------------------------------------
+
+
+def main() -> int:
+    _, data = api("/api/bot/")
+    if not isinstance(data, dict) or not data.get("bots"):
+        print("[fatal] no bots registered — create one via the WebUI first")
+        return 2
+
+    target = data["bots"][0]
+    bot_id = target["id"]
+    initial_connected = target["connected"]
+    initial_volume = target["volume"]
+    initial_mode = target["playMode"]
+
+    print(f"[init] target bot  = {bot_id[:8]}  ({target['name']})")
+    print(
+        f"[init] initial state: connected={initial_connected} "
+        f"volume={initial_volume} mode={initial_mode}"
+    )
+
+    try:
+        # Read-only / no-lifecycle groups first — they don't consume TS3
+        # anti-flood budget.
+        group_infrastructure(bot_id)
+        group_auth_status()
+        group_search()
+
+        # Lifecycle-heavy groups — interleave with small breathers so the
+        # TS3 server's per-IP reconnect limit doesn't start throttling us.
+        group_lifecycle(bot_id)
+        time.sleep(ANTIFLOOD_BREATHER)
+
+        group_playback(bot_id)
+        time.sleep(ANTIFLOOD_BREATHER)
+
+        group_queue_ops(bot_id)
+        time.sleep(ANTIFLOOD_BREATHER)
+
+        group_input_validation(bot_id)
+        group_disconnect_corners(bot_id)
+        group_seek(bot_id)
+        time.sleep(ANTIFLOOD_BREATHER)
+
+        group_races(bot_id)
+        # Extra breather before websocket group — races is the heaviest
+        # consumer of TS3 reconnect budget (disconnect-during-connect and
+        # stop-during-url-resolve each burn one cycle), and the websocket
+        # group needs a clean reconnect to observe live state broadcasts.
+        time.sleep(ANTIFLOOD_BREATHER * 3)
+
+        group_websocket(bot_id)
+    finally:
+        # Restore initial state — this runs even if a test raised
+        try:
+            api(
+                f"/api/player/{bot_id}/volume",
+                method="POST",
+                json_body={"volume": initial_volume},
+            )
+            api(
+                f"/api/player/{bot_id}/mode",
+                method="POST",
+                json_body={"mode": initial_mode},
+            )
+            api(f"/api/player/{bot_id}/stop", method="POST")
+            if initial_connected:
+                start_and_wait(bot_id)
+            else:
+                stop_and_wait(bot_id)
+        except Exception as e:
+            print(f"[warn] restore failed: {e}")
+
+    print()
+    print("=" * 60)
+    print(f"  PASSED:  {passed}")
+    print(f"  FAILED:  {failed}")
+    print(f"  SKIPPED: {skipped}")
+    print("=" * 60)
+
+    if failed > 0:
+        print("\nFailed tests:")
+        for r in results:
+            if r.status in ("FAIL", "ERROR"):
+                print(f"  [{r.status}] {r.name}: {r.detail}")
+
+    return 0 if failed == 0 else 1
+
+
+if __name__ == "__main__":
+    import sys
+
+    sys.exit(main())

scripts/test_jdymusic_powershell.mjs

@@ -0,0 +1,106 @@
+// Empirically verifies the PowerShell-download workaround for jdymusic CDN
+// blocks Node.js HTTP. Runs A/B against the same fresh /jdymusic/ URL:
+//   A) ffmpeg direct with browser UA (the previous fix in this branch)
+//   B) PowerShell WebClient -> temp file -> ffmpeg from file (the new fix)
+// Reports bytes received + exit code + stderr-tail for each.
+
+import { spawn } from "node:child_process";
+import { mkdtempSync, statSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { buildFfmpegArgs } from "../dist/audio/player.js";
+
+const url = process.argv[2];
+if (!url) {
+  console.error("usage: node scripts/test_jdymusic_powershell.mjs <jdymusic_url>");
+  process.exit(2);
+}
+if (!url.includes("/jdymusic/")) {
+  console.error("warning: this script targets /jdymusic/ URLs specifically");
+}
+
+const FFMPEG = "ffmpeg";
+const BROWSER_UA =
+  "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36";
+const TIMEOUT_MS = 20_000;
+
+function runFfmpeg(label, args, stdinSource) {
+  return new Promise((resolve) => {
+    const proc = spawn(FFMPEG, args, { stdio: [stdinSource ?? "ignore", "pipe", "pipe"] });
+    let bytes = 0;
+    let stderrTail = "";
+    let killed = false;
+    proc.stdout.on("data", (chunk) => { bytes += chunk.length; });
+    proc.stderr.on("data", (chunk) => { stderrTail = (stderrTail + chunk.toString()).slice(-1500); });
+    const timer = setTimeout(() => { killed = true; proc.kill("SIGTERM"); }, TIMEOUT_MS);
+    proc.on("exit", (code, signal) => {
+      clearTimeout(timer);
+      resolve({ label, bytes, code, signal, killed, stderrTail });
+    });
+  });
+}
+
+function downloadViaPowerShell(targetUrl, outFile) {
+  return new Promise((resolve) => {
+    const psScript = [
+      "$ErrorActionPreference = 'Stop'",
+      "$ProgressPreference = 'SilentlyContinue'",
+      "$wc = New-Object System.Net.WebClient",
+      "$wc.Headers.Add('User-Agent', $env:DL_UA)",
+      "$wc.Headers.Add('Referer', $env:DL_REFERER)",
+      "$wc.DownloadFile($env:DL_URL, $env:DL_OUT)",
+    ].join("; ");
+    const ps = spawn(
+      "powershell",
+      ["-NoProfile", "-ExecutionPolicy", "Bypass", "-Command", psScript],
+      {
+        env: {
+          ...process.env,
+          DL_URL: targetUrl,
+          DL_OUT: outFile,
+          DL_UA: BROWSER_UA,
+          DL_REFERER: "https://music.163.com/",
+        },
+        stdio: ["ignore", "pipe", "pipe"],
+      },
+    );
+    let stderr = "";
+    ps.stderr.on("data", (chunk) => { stderr += chunk.toString(); });
+    ps.on("exit", (code) => resolve({ code, stderr }));
+  });
+}
+
+console.log(`URL: ${url}\n`);
+
+console.log("[A] ffmpeg direct (browser UA via -headers)");
+const a = await runFfmpeg("A", buildFfmpegArgs(url, 0));
+console.log(`    code=${a.code} bytes=${a.bytes} killed=${a.killed}`);
+console.log(`    stderr-tail: ${a.stderrTail.split("\n").slice(-3).join(" | ")}\n`);
+
+console.log("[B] PowerShell WebClient -> temp file -> ffmpeg -i tempfile");
+const tempDir = mkdtempSync(join(tmpdir(), "tsbot-jdymusic-test-"));
+const tempFile = join(tempDir, "song.audio");
+const psStart = Date.now();
+const dl = await downloadViaPowerShell(url, tempFile);
+const psMs = Date.now() - psStart;
+if (dl.code !== 0) {
+  console.log(`    PowerShell download FAILED: code=${dl.code}`);
+  console.log(`    stderr: ${dl.stderr.slice(-500)}`);
+  rmSync(tempDir, { recursive: true, force: true });
+  process.exit(1);
+}
+const dlSize = statSync(tempFile).size;
+console.log(`    PowerShell downloaded ${dlSize} bytes in ${psMs}ms`);
+
+const b = await runFfmpeg("B", buildFfmpegArgs(tempFile, 0));
+console.log(`    ffmpeg-from-file: code=${b.code} bytes=${b.bytes} killed=${b.killed}`);
+console.log(`    stderr-tail: ${b.stderrTail.split("\n").slice(-3).join(" | ")}\n`);
+
+rmSync(tempDir, { recursive: true, force: true });
+
+const aBlocked = a.bytes === 0 && !a.killed;
+const bWorked = b.bytes > 100_000;
+console.log(
+  `Verdict: direct ${aBlocked ? "BLOCKED" : "OK"} ; ` +
+  `powershell-then-ffmpeg ${bWorked ? "WORKED" : "FAILED"}`,
+);

scripts/test_more_corners.py

@@ -0,0 +1,166 @@
+"""More corner-case regressions.
+
+A. resolveAndPlay disconnect-during-URL-resolve race
+   The bot checks !this.connected at the top of resolveAndPlay, but the
+   URL-resolve await can take several seconds. If stop is called during
+   that window, playback would previously start on a disconnected bot.
+
+B. /seek NaN/Infinity rejection
+   typeof NaN === "number" and NaN < 0 is false, so a plain range check
+   leaks NaN through and corrupts seekOffset / getElapsed.
+"""
+import threading
+import time
+import requests
+
+BASE = "http://localhost:3000"
+
+
+def api(path, method="GET", **kw):
+    return getattr(requests, method.lower())(f"{BASE}{path}", timeout=30, **kw)
+
+
+def get_bot(bot_id):
+    return next(b for b in api("/api/bot/").json()["bots"] if b["id"] == bot_id)
+
+
+def wait_connected(bot_id, want, timeout=15):
+    end = time.time() + timeout
+    while time.time() < end:
+        if get_bot(bot_id)["connected"] is want:
+            return True
+        time.sleep(0.15)
+    return False
+
+
+def test_resolve_play_stop_race(bot_id):
+    """Fire stopBot during the /play call's URL resolve window."""
+    api(f"/api/bot/{bot_id}/stop", method="POST")
+    wait_connected(bot_id, False)
+    time.sleep(1)
+    api(f"/api/bot/{bot_id}/start", method="POST")
+    wait_connected(bot_id, True)
+
+    # Schedule a stop 150ms into the play call — that lands inside the
+    # provider.getSongUrl await, which is where the race lives.
+    def delayed_stop():
+        time.sleep(0.15)
+        try:
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+        except Exception:
+            pass
+
+    threading.Thread(target=delayed_stop, daemon=True).start()
+
+    try:
+        api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json={"query": "the mass", "platform": "netease"},
+        )
+    except Exception:
+        pass
+
+    # Give both calls time to settle fully
+    time.sleep(3)
+    b = get_bot(bot_id)
+    # Key invariant: we never want connected=false AND playing=true. That
+    # pair is the exact Bug C symptom and would indicate the resolveAndPlay
+    # post-await check didn't fire.
+    assert not (b["connected"] is False and b["playing"] is True), (
+        f"inconsistent state after race: {b}"
+    )
+    print(
+        f"[PASS] resolveAndPlay stop-race — final state consistent "
+        f"(connected={b['connected']} playing={b['playing']})"
+    )
+
+
+def test_seek_nan_rejected(bot_id):
+    """Verify that NaN and Infinity seek positions are rejected at the API
+    layer (instead of poisoning seekOffset)."""
+    api(f"/api/bot/{bot_id}/stop", method="POST")
+    wait_connected(bot_id, False)
+    api(f"/api/bot/{bot_id}/start", method="POST")
+    wait_connected(bot_id, True)
+
+    # Start a real song so there is an active playback to seek against
+    api(
+        f"/api/player/{bot_id}/play",
+        method="POST",
+        json={"query": "the mass", "platform": "netease"},
+    )
+    time.sleep(1.2)
+
+    # JSON spec doesn't allow NaN/Infinity literals, but Python's json
+    # encoder emits them as bare tokens when allow_nan=True (the default).
+    # Express's body-parser rejects them as invalid JSON, which itself is
+    # a form of rejection. We additionally verify that sending a string
+    # "NaN" or a negative value is also rejected with a clean 400.
+    r = api(
+        f"/api/player/{bot_id}/seek",
+        method="POST",
+        json={"position": -5},
+    )
+    assert r.status_code == 400, f"negative seek should be rejected, got {r.status_code}"
+
+    r = api(
+        f"/api/player/{bot_id}/seek",
+        method="POST",
+        json={"position": "fifty"},
+    )
+    assert r.status_code == 400, f"string seek should be rejected, got {r.status_code}"
+
+    # Directly send NaN in raw body (body-parser will likely 400 it)
+    r = requests.post(
+        f"{BASE}/api/player/{bot_id}/seek",
+        data='{"position": NaN}',
+        headers={"Content-Type": "application/json"},
+        timeout=10,
+    )
+    assert r.status_code >= 400, f"NaN seek should be rejected, got {r.status_code}"
+
+    # After the junk attempts, a valid seek still works and the elapsed
+    # time is a finite number (not NaN).
+    r = api(
+        f"/api/player/{bot_id}/seek",
+        method="POST",
+        json={"position": 30},
+    )
+    assert r.status_code == 200, f"valid seek failed: {r.text[:120]}"
+
+    elapsed_resp = api(f"/api/player/{bot_id}/elapsed")
+    elapsed = elapsed_resp.json().get("elapsed")
+    assert elapsed is not None and isinstance(elapsed, (int, float)), (
+        f"elapsed should be a number, got {elapsed}"
+    )
+    # Could be exactly 30 or a tiny bit more if a frame has advanced
+    assert 29 <= elapsed < 40, f"elapsed after seek(30) out of range: {elapsed}"
+    print(f"[PASS] seek NaN/Infinity rejected; valid seek produces finite elapsed={elapsed:.2f}")
+
+
+def main():
+    bots = api("/api/bot/").json()["bots"]
+    if not bots:
+        print("[skip] no bots")
+        return
+    bot_id = bots[0]["id"]
+    initial = bots[0]["connected"]
+    print(f"[init] bot={bot_id[:8]} initial connected={initial}")
+
+    try:
+        test_resolve_play_stop_race(bot_id)
+        test_seek_nan_rejected(bot_id)
+        print("ALL GREEN")
+    finally:
+        if initial:
+            api(f"/api/bot/{bot_id}/start", method="POST")
+            wait_connected(bot_id, True)
+        else:
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+            wait_connected(bot_id, False)
+        print(f"[restore] connected={get_bot(bot_id)['connected']}")
+
+
+if __name__ == "__main__":
+    main()

scripts/test_multibot.py

@@ -0,0 +1,212 @@
+"""Stress-test two bots playing music concurrently on the same TS server.
+
+Creates two temporary bots (or reuses existing named ones), starts them,
+plays music on both, and polls /api/bot/ every 2 seconds to detect when
+(if) either bot disconnects or stops playing. Cleans up on exit.
+
+Usage:
+    python scripts/test_multibot.py --minutes 3
+    python scripts/test_multibot.py --minutes 10 --host 127.0.0.1 --port 9987
+"""
+import argparse
+import sys
+import time
+from dataclasses import dataclass
+
+import requests
+
+API = "http://localhost:3000"
+POLL_INTERVAL = 2.0
+TEST_BOT_NAMES = ("mbtest1", "mbtest2")
+TEST_BOT_NICKS = ("MBTest1", "MBTest2")
+QUERIES = ("the mass", "lofi")  # one different song per bot
+
+
+@dataclass
+class BotSnapshot:
+    t: float
+    connected: bool
+    playing: bool
+    song: str | None
+
+
+def api_get(path: str):
+    r = requests.get(f"{API}{path}", timeout=5)
+    r.raise_for_status()
+    return r.json()
+
+
+def api_post(path: str, json=None):
+    r = requests.post(f"{API}{path}", json=json, timeout=15)
+    r.raise_for_status()
+    return r.json()
+
+
+def api_delete(path: str):
+    r = requests.delete(f"{API}{path}", timeout=10)
+    r.raise_for_status()
+    return r.json()
+
+
+def cleanup_existing(names: tuple[str, ...]) -> None:
+    bots = api_get("/api/bot/")["bots"]
+    for b in bots:
+        if b["name"] in names:
+            try:
+                api_post(f"/api/player/{b['id']}/stop")
+            except Exception:
+                pass
+            try:
+                api_delete(f"/api/bot/{b['id']}")
+                print(f"[cleanup] removed existing bot {b['name']} ({b['id']})")
+            except Exception as e:
+                print(f"[cleanup] failed to remove {b['name']}: {e}")
+
+
+def create_bot(name: str, nickname: str, host: str, port: int) -> str:
+    res = api_post(
+        "/api/bot/",
+        json={
+            "name": name,
+            "serverAddress": host,
+            "serverPort": port,
+            "nickname": nickname,
+            "autoStart": False,
+        },
+    )
+    bot_id = res["id"]
+    print(f"[create] {name} -> {bot_id}")
+    return bot_id
+
+
+def start_bot(bot_id: str) -> None:
+    api_post(f"/api/bot/{bot_id}/start")
+
+
+def play(bot_id: str, query: str) -> None:
+    api_post(f"/api/player/{bot_id}/play", json={"query": query, "platform": "netease"})
+
+
+def snapshot(bot_id: str, t0: float) -> BotSnapshot:
+    bots = api_get("/api/bot/")["bots"]
+    b = next((x for x in bots if x["id"] == bot_id), None)
+    if not b:
+        return BotSnapshot(time.time() - t0, False, False, None)
+    song = b["currentSong"]["name"] if b.get("currentSong") else None
+    return BotSnapshot(time.time() - t0, b["connected"], b["playing"], song)
+
+
+def run(minutes: float, host: str, port: int) -> int:
+    print(f"[setup] duration={minutes}min host={host}:{port}")
+
+    cleanup_existing(TEST_BOT_NAMES)
+
+    bot_ids = [
+        create_bot(TEST_BOT_NAMES[0], TEST_BOT_NICKS[0], host, port),
+        create_bot(TEST_BOT_NAMES[1], TEST_BOT_NICKS[1], host, port),
+    ]
+
+    # Start both, allowing a small stagger to avoid handshake collision
+    for i, bid in enumerate(bot_ids):
+        start_bot(bid)
+        print(f"[start] bot{i+1} started")
+        time.sleep(1.5)
+
+    # Wait until both are connected (or bail after 15s)
+    deadline = time.time() + 15
+    while time.time() < deadline:
+        bots = {b["id"]: b for b in api_get("/api/bot/")["bots"]}
+        if all(bots[b]["connected"] for b in bot_ids):
+            print("[start] both bots connected")
+            break
+        time.sleep(0.5)
+    else:
+        print("[fatal] bots did not both come online in 15s")
+        cleanup_existing(TEST_BOT_NAMES)
+        return 2
+
+    # Kick off playback on both
+    for i, bid in enumerate(bot_ids):
+        play(bid, QUERIES[i])
+        print(f"[play] bot{i+1} -> {QUERIES[i]!r}")
+
+    t0 = time.time()
+    end = t0 + minutes * 60
+    first_drop: dict[str, float] = {}
+    last_state: dict[str, BotSnapshot] = {}
+
+    print(f"[monitor] polling every {POLL_INTERVAL}s for {minutes} min...")
+    print(f"{'time':>7}  {'bot1':<40}  {'bot2':<40}")
+
+    def fmt(snap: BotSnapshot) -> str:
+        flag = ("C" if snap.connected else "-") + ("P" if snap.playing else "-")
+        song = (snap.song or "").replace("\n", " ")[:30]
+        return f"{flag} {song}"
+
+    try:
+        while time.time() < end:
+            snaps = [snapshot(bid, t0) for bid in bot_ids]
+            elapsed = int(time.time() - t0)
+            row = f"{elapsed:>6}s  {fmt(snaps[0]):<40}  {fmt(snaps[1]):<40}"
+            # Only print when state changes or every 10s
+            changed = False
+            for bid, s in zip(bot_ids, snaps):
+                prev = last_state.get(bid)
+                if (prev is None
+                        or prev.connected != s.connected
+                        or prev.playing != s.playing
+                        or prev.song != s.song):
+                    changed = True
+                last_state[bid] = s
+                if not s.connected and bid not in first_drop:
+                    first_drop[bid] = s.t
+            if changed or elapsed % 10 == 0:
+                print(row)
+
+            # If both stopped playing but are still connected, re-queue the same song
+            for i, (bid, s) in enumerate(zip(bot_ids, snaps)):
+                if s.connected and not s.playing:
+                    try:
+                        play(bid, QUERIES[i])
+                    except Exception as e:
+                        print(f"[warn] re-play bot{i+1} failed: {e}")
+
+            time.sleep(POLL_INTERVAL)
+    except KeyboardInterrupt:
+        print("\n[abort] interrupted")
+
+    # Summary
+    total = time.time() - t0
+    print()
+    print("=" * 60)
+    print(f"Total observed time: {total:.1f}s")
+    for i, bid in enumerate(bot_ids):
+        drop = first_drop.get(bid)
+        if drop is None:
+            print(f"  bot{i+1} ({TEST_BOT_NICKS[i]}): stayed connected the whole run")
+        else:
+            print(f"  bot{i+1} ({TEST_BOT_NICKS[i]}): FIRST DISCONNECT at t+{drop:.1f}s")
+    print("=" * 60)
+
+    # Cleanup
+    cleanup_existing(TEST_BOT_NAMES)
+    print("[cleanup] done")
+
+    return 0 if not first_drop else 1
+
+
+def main() -> int:
+    p = argparse.ArgumentParser()
+    p.add_argument("--minutes", type=float, default=3.0)
+    p.add_argument("--host", default="127.0.0.1")
+    p.add_argument("--port", type=int, default=9987)
+    args = p.parse_args()
+    try:
+        return run(args.minutes, args.host, args.port)
+    except requests.HTTPError as e:
+        print(f"[http-error] {e} body={e.response.text[:200] if e.response else ''}")
+        return 3
+
+
+if __name__ == "__main__":
+    sys.exit(main())

scripts/test_netease_ua_fix.mjs

@@ -0,0 +1,73 @@
+// Empirically tests whether the browser UA + Referer headers fix the
+// connection resets we saw in bot.log against m701/m801.music.126.net.
+//
+// Spawns ffmpeg twice against the SAME fresh Netease CDN URL:
+//   A) old args from before the fix (no headers, -reconnect_delay_max 5)
+//   B) new args from after the fix (browser UA + Referer for music.126.net)
+// and reports bytes received + exit code + stderr-tail for each.
+
+import { spawn } from "node:child_process";
+import { buildFfmpegArgs } from "../dist/audio/player.js";
+
+const url = process.argv[2];
+if (!url) {
+  console.error("usage: node scripts/test_netease_ua_fix.mjs <netease_cdn_url>");
+  process.exit(2);
+}
+
+const FFMPEG = "ffmpeg";
+const TIMEOUT_MS = 15_000;
+
+function legacyArgs(u) {
+  return [
+    "-reconnect", "1",
+    "-reconnect_streamed", "1",
+    "-reconnect_delay_max", "5",
+    "-i", u,
+    "-f", "s16le",
+    "-ar", "48000",
+    "-ac", "2",
+    "-acodec", "pcm_s16le",
+    "-",
+  ];
+}
+
+function runFfmpeg(label, args) {
+  return new Promise((resolve) => {
+    const proc = spawn(FFMPEG, args, { stdio: ["ignore", "pipe", "pipe"] });
+    let bytes = 0;
+    let stderrTail = "";
+    let killed = false;
+
+    proc.stdout.on("data", (chunk) => {
+      bytes += chunk.length;
+    });
+    proc.stderr.on("data", (chunk) => {
+      stderrTail = (stderrTail + chunk.toString()).slice(-1500);
+    });
+
+    const timer = setTimeout(() => {
+      killed = true;
+      proc.kill("SIGTERM");
+    }, TIMEOUT_MS);
+
+    proc.on("exit", (code, signal) => {
+      clearTimeout(timer);
+      resolve({ label, bytes, code, signal, killed, stderrTail });
+    });
+  });
+}
+
+console.log(`URL: ${url}\n`);
+
+const a = await runFfmpeg("A) legacy args (no UA)", legacyArgs(url));
+console.log(`[A] code=${a.code} signal=${a.signal} killed=${a.killed} bytes=${a.bytes}`);
+console.log(`    stderr-tail:\n${a.stderrTail.split("\n").slice(-6).map((l) => "    " + l).join("\n")}\n`);
+
+const b = await runFfmpeg("B) fixed args (browser UA + Referer)", buildFfmpegArgs(url, 0));
+console.log(`[B] code=${b.code} signal=${b.signal} killed=${b.killed} bytes=${b.bytes}`);
+console.log(`    stderr-tail:\n${b.stderrTail.split("\n").slice(-6).map((l) => "    " + l).join("\n")}\n`);
+
+const aFailed = a.bytes === 0 && !a.killed && a.code !== 0;
+const bWorked = b.bytes > 100_000; // got real audio bytes
+console.log(`Verdict: legacy ${aFailed ? "FAILED (no bytes, exit code 1)" : "??"} ; fixed ${bWorked ? "WORKED (received audio)" : "??"}`);

scripts/test_playbar.py

@@ -0,0 +1,119 @@
+"""Reproduce / regression-check the player-bar-not-appearing bug.
+
+Captures the bot's initial playback state and restores it on exit so the
+test never leaves the user with surprise music or a cleared queue.
+"""
+import time
+import requests
+from playwright.sync_api import sync_playwright
+
+BASE = "http://localhost:3000"
+
+
+def api(path, method="GET", **kw):
+    fn = getattr(requests, method.lower())
+    r = fn(f"{BASE}{path}", timeout=10, **kw)
+    r.raise_for_status()
+    return r.json() if r.text else None
+
+
+def get_bot(bot_id):
+    return next(b for b in api("/api/bot/")["bots"] if b["id"] == bot_id)
+
+
+def capture_state(bot_id):
+    b = get_bot(bot_id)
+    return {
+        "playing": b["playing"],
+        "paused": b["paused"],
+        "song": (b["currentSong"] or {}).get("name"),
+    }
+
+
+def main():
+    bots = api("/api/bot/")["bots"]
+    if not bots:
+        print("[skip] no bots")
+        return
+    bot_id = bots[0]["id"]
+    initial = capture_state(bot_id)
+    print(f"[init] initial state: {initial}")
+
+    try:
+        # Clear slate
+        api(f"/api/player/{bot_id}/stop", method="POST")
+        time.sleep(0.6)
+
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True)
+            try:
+                ctx = browser.new_context()
+                ctx.add_init_script(
+                    """
+                    (() => {
+                      const OrigWS = window.WebSocket;
+                      window.__wsMessages = [];
+                      window.WebSocket = function(...args) {
+                        const ws = new OrigWS(...args);
+                        ws.addEventListener('message', (ev) => {
+                          try {
+                            const d = JSON.parse(ev.data);
+                            window.__wsMessages.push({type: d.type, botId: d.botId});
+                          } catch(e) {}
+                        });
+                        return ws;
+                      };
+                      Object.assign(window.WebSocket, OrigWS);
+                    })();
+                    """
+                )
+                page = ctx.new_page()
+                page.goto(BASE)
+                page.wait_for_load_state("networkidle")
+                time.sleep(0.8)
+
+                assert page.locator(".player-wrapper").count() == 0, (
+                    "player bar should be hidden before playback"
+                )
+
+                # Trigger play via API (simulates any play trigger)
+                api(
+                    f"/api/player/{bot_id}/play",
+                    method="POST",
+                    json={"query": "the mass", "platform": "netease"},
+                )
+
+                # Poll for up to 6s to see if player bar appears automatically
+                appeared_at = None
+                for i in range(60):
+                    if page.locator(".player-wrapper").count() > 0:
+                        appeared_at = i * 0.1
+                        break
+                    page.wait_for_timeout(100)
+
+                if appeared_at is None:
+                    msgs = page.evaluate("() => window.__wsMessages")
+                    print(f"[FAIL] player bar never appeared; WS msgs: {msgs}")
+                    raise AssertionError("player bar did not auto-show on stateChange")
+                print(f"[PASS] player bar appeared after {appeared_at:.1f}s")
+            finally:
+                browser.close()
+    finally:
+        # Restore: stop the "test" song we triggered, then re-apply initial
+        # state as best we can. We can't re-queue the user's previous song,
+        # but we can at least stop ours and leave the bot idle if it was idle.
+        try:
+            api(f"/api/player/{bot_id}/stop", method="POST")
+        except Exception as e:
+            print(f"[warn] failed to stop test song on cleanup: {e}")
+        post = capture_state(bot_id)
+        print(f"[restore] bot now idle (was playing={initial['playing']} song={initial['song']!r})")
+        if initial["playing"] and initial["song"]:
+            print(
+                f"[note] initial bot was playing {initial['song']!r}; "
+                "this test cannot resume arbitrary tracks — you may need to restart playback"
+            )
+
+
+if __name__ == "__main__":
+    main()

scripts/test_power_button.py

@@ -0,0 +1,100 @@
+"""E2E: the new power button in the Bot Selector dropdown toggles bot connected state.
+
+Captures the target bot's initial connected state and restores it on exit
+(including on assertion failure), so running this test never pollutes the
+user's current bot setup.
+"""
+import time
+import requests
+from playwright.sync_api import sync_playwright
+
+BASE = "http://localhost:3000"
+
+
+def get_bot(bot_id):
+    return next(b for b in requests.get(f"{BASE}/api/bot/").json()["bots"] if b["id"] == bot_id)
+
+
+def wait_for_connected(bot_id, want: bool, timeout_s: float = 12.0) -> bool:
+    deadline = time.time() + timeout_s
+    while time.time() < deadline:
+        if get_bot(bot_id)["connected"] is want:
+            return True
+        time.sleep(0.2)
+    return False
+
+
+def set_connected(bot_id, want: bool) -> None:
+    """Force the bot into the given connected state via API."""
+    current = get_bot(bot_id)["connected"]
+    if current == want:
+        return
+    endpoint = "start" if want else "stop"
+    requests.post(f"{BASE}/api/bot/{bot_id}/{endpoint}")
+    wait_for_connected(bot_id, want)
+
+
+def main():
+    bots = requests.get(f"{BASE}/api/bot/").json()["bots"]
+    if not bots:
+        print("[skip] no bots registered, nothing to test")
+        return
+    target = bots[0]
+    bot_id = target["id"]
+    initial_connected = target["connected"]
+    print(f"[init] target bot {target['name']} ({bot_id[:8]}), initial connected={initial_connected}")
+
+    try:
+        # Force bot disconnected before the test
+        set_connected(bot_id, False)
+        assert not get_bot(bot_id)["connected"], "bot should be disconnected at start"
+
+        with sync_playwright() as p:
+            browser = p.chromium.launch(headless=True)
+            try:
+                page = browser.new_page(viewport={"width": 1440, "height": 900})
+                page.goto(BASE)
+                page.wait_for_load_state("networkidle")
+                time.sleep(0.6)
+
+                # Open dropdown
+                page.locator(".bot-selector-btn").click()
+                page.wait_for_selector(".bot-power-btn")
+
+                # Click the power button to start
+                page.locator(".bot-power-btn").first.click()
+                print("[ui] clicked power (start)")
+
+                assert wait_for_connected(bot_id, True), "bot should be connected after clicking start"
+                print("[api] bot connected = True")
+
+                # Let UI catch up via WS then re-open the dropdown to re-check class
+                time.sleep(1.0)
+                page.locator(".bot-selector-btn").click()  # close
+                time.sleep(0.2)
+                page.locator(".bot-selector-btn").click()  # reopen
+                page.wait_for_selector(".bot-power-btn.online", timeout=3000)
+                print("[ui] power button now shows .online class")
+
+                # Click again to stop
+                page.locator(".bot-power-btn.online").first.click()
+                print("[ui] clicked power (stop)")
+
+                assert wait_for_connected(bot_id, False), "bot should be disconnected after clicking stop"
+                print("[api] bot connected = False")
+
+                print("[PASS] power button toggles bot connection")
+            finally:
+                browser.close()
+    finally:
+        # Always restore the initial state so the test never leaves the bot
+        # in an unexpected place
+        set_connected(bot_id, initial_connected)
+        final = get_bot(bot_id)["connected"]
+        print(f"[restore] bot connected={final} (initial was {initial_connected})")
+        if final != initial_connected:
+            print("[warn] failed to restore initial connected state")
+
+
+if __name__ == "__main__":
+    main()

scripts/test_rapid_cycle.py

@@ -0,0 +1,130 @@
+"""Regression for the 'connected=False but playing=True' stuck-state bug.
+
+After rapid disconnect/reconnect, the library could drop the connection
+(TS3 server anti-flood or a hung handshake). The bot then ended up in an
+inconsistent state: player.state='playing' but tsClient disconnected.
+
+This test verifies three fixes:
+  Bug A — startBot() has a 15s timeout instead of hanging forever on a
+          stalled handshake. /start returns a clean 500 instead of blocking.
+  Bug B — play/add/etc commands are rejected when the bot is not connected.
+  Bug C — the tsClient 'disconnected' handler always clears player state,
+          even when connect() never completed (so !this.connected).
+
+We also sanity-check that the bot recovers (can start a fresh cycle) after
+a transient failure.
+"""
+import time
+import requests
+
+BASE = "http://localhost:3000"
+
+
+def api(path, method="GET", **kw):
+    return getattr(requests, method.lower())(f"{BASE}{path}", timeout=30, **kw)
+
+
+def get_bot(bot_id):
+    return next(b for b in api("/api/bot/").json()["bots"] if b["id"] == bot_id)
+
+
+def wait_connected(bot_id, want, timeout=15):
+    end = time.time() + timeout
+    while time.time() < end:
+        if get_bot(bot_id)["connected"] is want:
+            return True
+        time.sleep(0.15)
+    return False
+
+
+def main():
+    bots = api("/api/bot/").json()["bots"]
+    if not bots:
+        print("[skip] no bots")
+        return
+    bot_id = bots[0]["id"]
+    initial_connected = bots[0]["connected"]
+    print(f"[init] bot={bot_id[:8]} initial connected={initial_connected}")
+
+    try:
+        # Start from a clean slate
+        api(f"/api/bot/{bot_id}/stop", method="POST")
+        wait_connected(bot_id, False)
+
+        # --- Bug B: play while disconnected must be rejected ---
+        r = api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json={"query": "rejection test", "platform": "netease"},
+        )
+        assert r.status_code >= 400, (
+            f"play while disconnected should fail, got {r.status_code} {r.text[:120]}"
+        )
+        assert "not connected" in r.text.lower(), (
+            f"expected 'not connected' error, got: {r.text[:200]}"
+        )
+        b = get_bot(bot_id)
+        assert not b["playing"], f"player shouldn't be playing after rejected /play: {b}"
+        print("[PASS] Bug B — /play rejected while bot disconnected; state untouched")
+
+        # --- Bug C: normal start→play→stop leaves player state clean ---
+        r = api(f"/api/bot/{bot_id}/start", method="POST")
+        assert r.status_code == 200, f"start failed {r.text[:120]}"
+        assert wait_connected(bot_id, True), "bot did not connect within 15s"
+
+        r = api(
+            f"/api/player/{bot_id}/play",
+            method="POST",
+            json={"query": "the mass", "platform": "netease"},
+        )
+        assert r.status_code == 200, f"play failed {r.text[:120]}"
+        time.sleep(1.2)
+        b = get_bot(bot_id)
+        assert b["connected"] and b["playing"], f"should be connected+playing: {b}"
+
+        api(f"/api/bot/{bot_id}/stop", method="POST")
+        assert wait_connected(bot_id, False, timeout=5), "bot did not disconnect"
+        b = get_bot(bot_id)
+        assert not b["playing"], (
+            f"player should have stopped after bot disconnect (Bug C): {b}"
+        )
+        print("[PASS] Bug C — stop clears both connected and playing state")
+
+        # --- Bug A: startBot has a deadline and returns a clean error if connect hangs ---
+        # We can't easily force a hang in-process, but we can sanity-check that
+        # startBot returns promptly (well under the 15s cap) on a normal run.
+        t0 = time.time()
+        r = api(f"/api/bot/{bot_id}/start", method="POST")
+        elapsed = time.time() - t0
+        assert r.status_code == 200, f"start failed {r.text[:120]}"
+        assert elapsed < 10, f"start should be prompt, took {elapsed:.1f}s"
+        assert wait_connected(bot_id, True), "bot did not connect"
+        print(
+            f"[PASS] Bug A — startBot completed in {elapsed:.2f}s "
+            "(deadline is 15s, would throw on hang)"
+        )
+
+        # --- Recovery: after any failure, another start should work ---
+        api(f"/api/bot/{bot_id}/stop", method="POST")
+        wait_connected(bot_id, False)
+        # Give TS3 server a moment to forget us (anti-flood grace)
+        time.sleep(2)
+        r = api(f"/api/bot/{bot_id}/start", method="POST")
+        assert r.status_code == 200, f"recovery start failed {r.text[:120]}"
+        assert wait_connected(bot_id, True), "bot did not recover"
+        print("[PASS] recovery — bot reconnects cleanly after a cycle")
+
+        print("ALL GREEN")
+
+    finally:
+        if initial_connected:
+            api(f"/api/bot/{bot_id}/start", method="POST")
+            wait_connected(bot_id, True)
+        else:
+            api(f"/api/bot/{bot_id}/stop", method="POST")
+            wait_connected(bot_id, False)
+        print(f"[restore] bot connected={get_bot(bot_id)['connected']} (was {initial_connected})")
+
+
+if __name__ == "__main__":
+    main()

src/audio/player.test.ts

@@ -0,0 +1,668 @@
+import { describe, it, expect, vi } from "vitest";
+import { mkdtempSync, writeFileSync, existsSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { Readable } from "node:stream";
+import { buildFfmpegArgs, shouldUsePowerShellDownload, cleanupTempDir, shouldEndOnStall, volumeToFactor, AudioPlayer } from "./player.js";
+import type { Logger } from "../logger.js";
+
+function getHeadersArg(args: string[]): string {
+  const idx = args.indexOf("-headers");
+  if (idx === -1) return "";
+  return args[idx + 1] ?? "";
+}
+
+describe("buildFfmpegArgs", () => {
+  it("includes browser User-Agent and Referer for Netease CDN URLs", () => {
+    const url = "http://m701.music.126.net/some/path/song.mp3?vuutv=abc";
+    const args = buildFfmpegArgs(url, 0);
+    const headers = getHeadersArg(args);
+    expect(headers).toContain("User-Agent:");
+    expect(headers).toContain("Mozilla/5.0");
+    expect(headers).toContain("Referer: https://music.163.com/");
+  });
+
+  it("keeps Bilibili Referer + UA for bilibili URLs", () => {
+    const url = "https://upos-sz-mirrorcoso1.bilivideo.com/foo/bar.mp3";
+    const args = buildFfmpegArgs(url, 0);
+    const headers = getHeadersArg(args);
+    expect(headers).toContain("Referer: https://www.bilibili.com");
+    expect(headers).toContain("User-Agent: Mozilla/5.0");
+  });
+
+  it("does not set custom headers for unknown URLs", () => {
+    const url = "https://example.com/song.mp3";
+    const args = buildFfmpegArgs(url, 0);
+    expect(args).not.toContain("-headers");
+  });
+
+  it("includes resilient reconnect flags for all URLs", () => {
+    const args = buildFfmpegArgs("https://example.com/song.mp3", 0);
+    expect(args).toContain("-reconnect");
+    expect(args).toContain("-reconnect_streamed");
+    expect(args).toContain("-reconnect_delay_max");
+    expect(args).toContain("-reconnect_on_network_error");
+    expect(args).toContain("-reconnect_on_http_error");
+    const idx = args.indexOf("-reconnect_delay_max");
+    expect(Number(args[idx + 1])).toBeGreaterThanOrEqual(30);
+  });
+
+  it("sets -reconnect_at_eof 1 (before -i) so long B站 streams resume after premature EOF (#89)", () => {
+    const args = buildFfmpegArgs("https://x.bilivideo.com/audio.m4s", 0);
+    const idx = args.indexOf("-reconnect_at_eof");
+    expect(idx).toBeGreaterThan(-1);
+    expect(args[idx + 1]).toBe("1");
+    expect(idx).toBeLessThan(args.indexOf("-i")); // input options must precede -i
+  });
+
+  it("inserts -ss after -i when seekSeconds > 0", () => {
+    const args = buildFfmpegArgs("https://example.com/song.mp3", 42);
+    const ssIdx = args.indexOf("-ss");
+    const iIdx = args.indexOf("-i");
+    expect(ssIdx).toBeGreaterThan(-1);
+    expect(args[ssIdx + 1]).toBe("42");
+    expect(ssIdx).toBeGreaterThan(iIdx);
+  });
+
+  it("seeks B站 streams input-side (before -i) so a resume jumps via Range instead of re-downloading (#161)", () => {
+    const args = buildFfmpegArgs("https://upos-sz-mirrorcos.bilivideo.com/audio.m4s", 3600);
+    const ssIdx = args.indexOf("-ss");
+    expect(args[ssIdx + 1]).toBe("3600");
+    expect(ssIdx).toBeLessThan(args.indexOf("-i"));
+    expect(args.lastIndexOf("-ss")).toBe(ssIdx); // only one -ss
+  });
+
+  it("does not insert -ss when seekSeconds is 0", () => {
+    const args = buildFfmpegArgs("https://example.com/song.mp3", 0);
+    expect(args).not.toContain("-ss");
+  });
+
+  it("omits HTTP-only flags when input is a local file path", () => {
+    const args = buildFfmpegArgs("C:/temp/song.mp3", 0);
+    expect(args).not.toContain("-reconnect");
+    expect(args).not.toContain("-reconnect_at_eof");
+    expect(args).not.toContain("-reconnect_on_network_error");
+    expect(args).not.toContain("-reconnect_on_http_error");
+    expect(args).not.toContain("-headers");
+    expect(args).toContain("-i");
+    expect(args[args.indexOf("-i") + 1]).toBe("C:/temp/song.mp3");
+  });
+
+  it("ends args with the input URL and PCM output spec", () => {
+    const url = "https://example.com/song.mp3";
+    const args = buildFfmpegArgs(url, 0);
+    const iIdx = args.indexOf("-i");
+    expect(args[iIdx + 1]).toBe(url);
+    expect(args).toContain("-f");
+    expect(args).toContain("s16le");
+    expect(args[args.length - 1]).toBe("-");
+  });
+});
+
+describe("volumeToFactor (#84 smooth volume curve)", () => {
+  it("is 0 at vol 0 and exactly 1.0 at vol 100 (full loudness still reserved at 100)", () => {
+    expect(volumeToFactor(0)).toBe(0);
+    expect(volumeToFactor(100)).toBe(1);
+  });
+
+  it("clamps out-of-range input", () => {
+    expect(volumeToFactor(-20)).toBe(0);
+    expect(volumeToFactor(150)).toBe(1);
+  });
+
+  it("is strictly monotonic across the whole range (no dead zone)", () => {
+    for (let v = 0; v < 100; v++) {
+      expect(volumeToFactor(v + 1)).toBeGreaterThan(volumeToFactor(v));
+    }
+  });
+
+  it("removes the old flat 80-99 dead zone", () => {
+    // Old mapping moved only 0.16 -> 0.198 across 80..99; new curve climbs clearly.
+    expect(volumeToFactor(99) - volumeToFactor(80)).toBeGreaterThan(0.3);
+  });
+
+  it("removes the discontinuity at 100 (old jump was ~0.8)", () => {
+    expect(volumeToFactor(100) - volumeToFactor(99)).toBeLessThan(0.1);
+  });
+
+  it("keeps the low range gentle", () => {
+    expect(volumeToFactor(50)).toBeLessThan(0.12);
+  });
+});
+
+describe("shouldUsePowerShellDownload", () => {
+  const jdymusicUrl =
+    "http://m801.music.126.net/20260507/abc/jdymusic/obj/xyz/song.mp3?vuutv=tok";
+  const newCdnUrl =
+    "http://m801.music.126.net/20260507/abc/jd-musicrep-ts/obj/xyz/song.mp3?vuutv=tok";
+  const ymusicUrl =
+    "http://m801.music.126.net/20260507/abc/ymusic/obj/xyz/song.mp3?vuutv=tok";
+
+  it("returns true for /jdymusic/ URL on win32", () => {
+    expect(shouldUsePowerShellDownload(jdymusicUrl, "win32")).toBe(true);
+  });
+
+  it("returns false for /jdymusic/ URL on linux", () => {
+    expect(shouldUsePowerShellDownload(jdymusicUrl, "linux")).toBe(false);
+  });
+
+  it("returns false for /jdymusic/ URL on darwin", () => {
+    expect(shouldUsePowerShellDownload(jdymusicUrl, "darwin")).toBe(false);
+  });
+
+  it("returns false for new-format /jd-musicrep-ts/ URL on win32", () => {
+    expect(shouldUsePowerShellDownload(newCdnUrl, "win32")).toBe(false);
+  });
+
+  it("returns false for /ymusic/ URL on win32", () => {
+    expect(shouldUsePowerShellDownload(ymusicUrl, "win32")).toBe(false);
+  });
+
+  it("returns false for unrelated URLs", () => {
+    expect(shouldUsePowerShellDownload("https://example.com/x.mp3", "win32")).toBe(false);
+  });
+});
+
+describe("cleanupTempDir", () => {
+  it("removes a directory and its contents", () => {
+    const dir = mkdtempSync(join(tmpdir(), "tsbot-test-"));
+    writeFileSync(join(dir, "song.mp3"), "fake-bytes");
+    expect(existsSync(dir)).toBe(true);
+    cleanupTempDir(dir);
+    expect(existsSync(dir)).toBe(false);
+  });
+
+  it("does not throw when directory does not exist", () => {
+    const missing = join(tmpdir(), "tsbot-test-does-not-exist-xyz");
+    expect(() => cleanupTempDir(missing)).not.toThrow();
+  });
+
+  it("does not throw when called twice", () => {
+    const dir = mkdtempSync(join(tmpdir(), "tsbot-test-"));
+    cleanupTempDir(dir);
+    expect(() => cleanupTempDir(dir)).not.toThrow();
+  });
+});
+
+describe("shouldEndOnStall (#89 mid-track stall watchdog)", () => {
+  const MAX_EMPTY = 250; // ~5s near-end threshold
+  const MAX_STALL = 3000; // ~60s far-from-end watchdog
+
+  it("ends quickly near the end once the empty threshold is reached (normal EOF)", () => {
+    expect(shouldEndOnStall(MAX_EMPTY, true, MAX_EMPTY, MAX_STALL)).toBe(true);
+    expect(shouldEndOnStall(MAX_EMPTY - 1, true, MAX_EMPTY, MAX_STALL)).toBe(false);
+  });
+
+  it("does NOT end far from the end at the near-end threshold (avoids false skips on transient underruns)", () => {
+    // This is the core regression: a brief underrun mid-song must not end the track.
+    expect(shouldEndOnStall(MAX_EMPTY, false, MAX_EMPTY, MAX_STALL)).toBe(false);
+    expect(shouldEndOnStall(MAX_STALL - 1, false, MAX_EMPTY, MAX_STALL)).toBe(false);
+  });
+
+  it("eventually ends far from the end once the long stall watchdog trips (dead stream recovers)", () => {
+    // The pre-fix bug: far-from-end stalls grew unbounded and never ended -> permanent silence.
+    expect(shouldEndOnStall(MAX_STALL, false, MAX_EMPTY, MAX_STALL)).toBe(true);
+    expect(shouldEndOnStall(MAX_STALL + 500, false, MAX_EMPTY, MAX_STALL)).toBe(true);
+  });
+
+  it("never ends before any threshold", () => {
+    expect(shouldEndOnStall(0, true, MAX_EMPTY, MAX_STALL)).toBe(false);
+    expect(shouldEndOnStall(10, false, MAX_EMPTY, MAX_STALL)).toBe(false);
+  });
+});
+
+// Minimal stub: AudioPlayer only calls debug/info/warn/error; child() returns self.
+const silentLogger = {
+  debug() {},
+  info() {},
+  warn() {},
+  error() {},
+  fatal() {},
+  trace() {},
+  child() {
+    return silentLogger;
+  },
+} as unknown as Logger;
+
+function applyPlayerVolume(player: AudioPlayer, pcm: Buffer): Buffer {
+  return (
+    player as unknown as { applyVolume(input: Buffer): Buffer }
+  ).applyVolume(pcm);
+}
+
+function stereoPcm(sample: number, frames = 2): Buffer {
+  const pcm = Buffer.alloc(frames * 4);
+  for (let offset = 0; offset < pcm.length; offset += 2) {
+    pcm.writeInt16LE(sample, offset);
+  }
+  return pcm;
+}
+
+describe("AudioPlayer transient ducking gain", () => {
+  it("layers ducking on the PCM path without changing the user's base volume", () => {
+    const player = new AudioPlayer(silentLogger);
+    player.setVolume(100);
+    player.setDuckingGain(0.3);
+
+    const adjusted = applyPlayerVolume(player, stereoPcm(10_000));
+
+    expect(adjusted.readInt16LE(0)).toBe(3_000);
+    expect(adjusted.readInt16LE(2)).toBe(3_000);
+    expect(player.getVolume()).toBe(100);
+    expect(player.getDuckingGain()).toBe(0.3);
+  });
+
+  it("multiplies the transient gain by the existing base-volume curve", () => {
+    const player = new AudioPlayer(silentLogger);
+    player.setVolume(50);
+    player.setDuckingGain(0.5);
+
+    const adjusted = applyPlayerVolume(player, stereoPcm(10_000));
+    expect(adjusted.readInt16LE(0)).toBe(
+      Math.round(10_000 * volumeToFactor(50) * 0.5),
+    );
+  });
+
+  it("interpolates ramps smoothly across each stereo PCM frame", () => {
+    let now = 100;
+    const nowSpy = vi.spyOn(performance, "now").mockImplementation(() => now);
+    try {
+      const player = new AudioPlayer(silentLogger);
+      player.setVolume(100);
+      player.setDuckingGain(0.2, 100);
+
+      now = 150;
+      expect(player.getDuckingGain()).toBeCloseTo(0.6, 8);
+      const adjusted = applyPlayerVolume(player, stereoPcm(10_000));
+
+      // At t=150 the ramp is 0.6; at the end of this 20 ms frame it is 0.44.
+      expect(adjusted.readInt16LE(0)).toBe(6_000);
+      expect(adjusted.readInt16LE(2)).toBe(6_000);
+      expect(adjusted.readInt16LE(4)).toBe(4_400);
+      expect(adjusted.readInt16LE(6)).toBe(4_400);
+    } finally {
+      nowSpy.mockRestore();
+    }
+  });
+
+  it("clamps transient gain and ignores a non-finite update", () => {
+    const player = new AudioPlayer(silentLogger);
+    player.setDuckingGain(-1);
+    expect(player.getDuckingGain()).toBe(0);
+    player.setDuckingGain(2);
+    expect(player.getDuckingGain()).toBe(1);
+    player.setDuckingGain(Number.NaN);
+    expect(player.getDuckingGain()).toBe(1);
+  });
+});
+
+// A readable we fully control: no underlying source; we push PCM manually and
+// keep it open (never push(null)) to model the long-lived go-librespot sidecar.
+function openPcmReadable(): Readable {
+  return new Readable({ read() {} });
+}
+
+const wait = (ms: number): Promise<void> => new Promise<void>((r) => setTimeout(r, ms));
+const FRAME_BYTES = 3840; // PCM_FRAME_BYTES: 960 samples * 2ch * 2 bytes @48k s16le
+
+describe("AudioPlayer external-PCM mode (playPcmStream)", () => {
+  it("emits Opus 'frame' events from the external PCM stream without spawning ffmpeg", async () => {
+    const player = new AudioPlayer(silentLogger);
+    const frames: Buffer[] = [];
+    player.on("frame", (f) => frames.push(f));
+
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, {});
+    stream.push(Buffer.alloc(FRAME_BYTES * 10)); // ~10 frames of PCM
+
+    await wait(150); // ~7 frame ticks at 20ms
+
+    expect(player.getState()).toBe("playing");
+    expect(frames.length).toBeGreaterThan(0);
+    expect(Buffer.isBuffer(frames[0])).toBe(true);
+    player.stop();
+  });
+
+  it("does NOT emit 'trackEnd' on underrun while external (stream stays open)", async () => {
+    const player = new AudioPlayer(silentLogger);
+    let ended = 0;
+    const frames: Buffer[] = [];
+    player.on("trackEnd", () => ended++);
+    player.on("frame", (f) => frames.push(f));
+
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, {});
+    stream.push(Buffer.alloc(FRAME_BYTES * 2)); // only 2 frames, then underrun
+
+    await wait(200); // long after those 2 frames have drained
+
+    // In the url path, ffmpeg===null + empty buffer would fire trackEnd; here it must not.
+    expect(ended).toBe(0);
+    // Silence frames keep the 20ms timeline alive -> more than the 2 fed frames emitted.
+    expect(frames.length).toBeGreaterThan(2);
+    expect(player.getState()).toBe("playing");
+    player.stop();
+  });
+
+  // CORRECTION C2 (c): stop() DETACHES the shared readable — it must NOT be destroyed
+  // (destroying the sidecar's long-lived ffmpeg stdout would kill it for every future
+  // track). The sessionId bump + listener removal fence stale PCM out of pcmBuffer.
+  it("stop() detaches external mode without destroying the readable, and fences via sessionId", async () => {
+    const player = new AudioPlayer(silentLogger);
+    const frames: Buffer[] = [];
+    player.on("frame", (f) => frames.push(f));
+
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, {});
+    expect(stream.listenerCount("data")).toBe(1);
+    stream.push(Buffer.alloc(FRAME_BYTES * 5));
+    await wait(80);
+
+    player.stop();
+    expect(player.getState()).toBe("idle");
+    // C2: the shared sidecar stream must NOT be destroyed by teardown.
+    expect(stream.destroyed).toBe(false);
+    // Player's listeners are removed on detach (data/end/error).
+    expect(stream.listenerCount("data")).toBe(0);
+    expect(stream.listenerCount("end")).toBe(0);
+    expect(stream.listenerCount("error")).toBe(0);
+
+    const countAtStop = frames.length;
+    // sessionId fence + detached listeners: PCM pushed after stop must not
+    // resurrect the timeline or re-feed pcmBuffer.
+    stream.push(Buffer.alloc(FRAME_BYTES * 5));
+    await wait(80);
+    expect(frames.length).toBe(countAtStop);
+  });
+
+  // CORRECTION C2 (a): a gapless track change is driven by the sidecar pushing LATER
+  // PCM over the SAME already-attached stream. The player must NOT detach/re-attach
+  // (no second playPcmStream) — one persistent data listener serves every track.
+  it("(C2-a) feeds a later chunk over the SAME single attachment — gapless track change, no re-attach", async () => {
+    const player = new AudioPlayer(silentLogger);
+    const frames: Buffer[] = [];
+    player.on("frame", (f) => frames.push(f));
+
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, {});
+    expect(stream.listenerCount("data")).toBe(1); // attached exactly once
+
+    stream.push(Buffer.alloc(FRAME_BYTES * 4)); // "track 1" PCM
+    await wait(120);
+    const afterFirst = frames.length;
+    expect(afterFirst).toBeGreaterThan(0);
+
+    stream.push(Buffer.alloc(FRAME_BYTES * 4)); // sidecar seamlessly rolls into "track 2"
+    await wait(120);
+    expect(frames.length).toBeGreaterThan(afterFirst);
+
+    // Still exactly ONE listener — no detach/re-attach across the handoff.
+    expect(stream.listenerCount("data")).toBe(1);
+    expect(player.getState()).toBe("playing");
+    player.stop();
+  });
+
+  // CORRECTION C2 (b): a second playPcmStream detaches the first (NOT destroyed, and it
+  // stops feeding pcmBuffer) and attaches the second.
+  it("(C2-b) a second playPcmStream detaches the first (not destroyed, stops feeding) and attaches the second", async () => {
+    const player = new AudioPlayer(silentLogger);
+    const frames: Buffer[] = [];
+    player.on("frame", (f) => frames.push(f));
+
+    const first = openPcmReadable();
+    player.playPcmStream(first, {});
+    first.push(Buffer.alloc(FRAME_BYTES * 4));
+    await wait(120);
+    expect(frames.length).toBeGreaterThan(0);
+    expect(first.listenerCount("data")).toBe(1);
+
+    const second = openPcmReadable();
+    player.playPcmStream(second, {}); // fences + detaches `first`, attaches `second`
+
+    // C2: `first` is DETACHED, not destroyed.
+    expect(first.destroyed).toBe(false);
+    // `first` no longer feeds pcmBuffer — its data listener was removed.
+    expect(first.listenerCount("data")).toBe(0);
+    // `second` is now the attached source.
+    expect(second.listenerCount("data")).toBe(1);
+    expect(player.getState()).toBe("playing");
+    player.stop();
+  });
+
+  it("fires onExternalEnd when the readable ends (drives controller-based advance)", async () => {
+    const player = new AudioPlayer(silentLogger);
+    let endedCb = 0;
+
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, { onExternalEnd: () => endedCb++ });
+    stream.push(Buffer.alloc(FRAME_BYTES));
+    await wait(40);
+    stream.push(null); // end-of-stream
+    await wait(40);
+
+    expect(endedCb).toBe(1);
+    player.stop();
+  });
+
+  it("seek() is a local no-op in external mode (never respawns ffmpeg on a spotify sentinel)", async () => {
+    const player = new AudioPlayer(silentLogger);
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, {});
+    stream.push(Buffer.alloc(FRAME_BYTES * 3));
+    await wait(40);
+
+    expect(() => player.seek(30)).not.toThrow();
+    // Still external, still playing — no url-ffmpeg respawn, state unchanged.
+    expect(player.getState()).toBe("playing");
+    player.stop();
+  });
+
+  it("isExternalActive() is false initially, true after playPcmStream, false after stop()", () => {
+    const player = new AudioPlayer(silentLogger);
+    // Idle: never attached.
+    expect(player.isExternalActive()).toBe(false);
+
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, {});
+    // Attached to the external sidecar stream.
+    expect(player.isExternalActive()).toBe(true);
+
+    player.stop();
+    // Detached again — the orchestrator uses this to know it must re-attach.
+    expect(player.isExternalActive()).toBe(false);
+  });
+
+  it("pause()/resume() still gate local emission in external mode (unchanged semantics)", async () => {
+    const player = new AudioPlayer(silentLogger);
+    const stream = openPcmReadable();
+    player.playPcmStream(stream, {});
+    stream.push(Buffer.alloc(FRAME_BYTES * 3));
+    await wait(40);
+
+    player.pause();
+    expect(player.getState()).toBe("paused");
+    player.resume();
+    expect(player.getState()).toBe("playing");
+    player.stop();
+  });
+
+  // CORRECTION C1 (whole-branch): mixed queue [spotifyA, neteaseB, spotifyC].
+  // Advancing A -> B (a NON-spotify track) calls stop(), whose detachExternalStream()
+  // PAUSES the backend's long-lived SHARED readable (state.flowing = false). When the
+  // LATER spotify track C reuses the SAME backend, the orchestrator re-attaches that
+  // SAME readable via playPcmStream(). Node's Readable.on('data') only auto-resumes
+  // when flowing !== false, so without an explicit resume() the shared stream stays
+  // paused, onData never fires, pcmBuffer stays empty, and C plays only silence frames.
+  // Regression: after re-attach the shared stream MUST be flowing again and real PCM
+  // MUST reach the player.
+  it("(C1) resumes a re-attached, previously-paused SHARED stream so a later Spotify track isn't silent", async () => {
+    const player = new AudioPlayer(silentLogger);
+    const frames: Buffer[] = [];
+    player.on("frame", (f) => frames.push(f));
+
+    // The backend's long-lived, SHARED readable, reused across every track.
+    const shared = openPcmReadable();
+
+    // --- Spotify track A: first attach (auto-resumes, flowing was null !== false).
+    player.playPcmStream(shared, {});
+    shared.push(Buffer.alloc(FRAME_BYTES * 4));
+    await wait(120);
+    expect(frames.length).toBeGreaterThan(0);
+
+    // --- Advance to a NON-spotify track (neteaseB): play(url) begins with stop(),
+    // which detaches AND pauses the shared stream (state.flowing = false).
+    player.stop();
+    expect(shared.isPaused()).toBe(true); // shared stream is now paused
+    expect(player.getState()).toBe("idle");
+
+    // --- Spotify track C reuses the SAME backend: isExternalActive() is false so the
+    // orchestrator re-attaches the SAME (paused) shared readable.
+    expect(player.isExternalActive()).toBe(false);
+
+    // Spy on the shared stream to observe whether real PCM actually flows to the
+    // player. Adding a 'data' listener while flowing===false does NOT resume it
+    // (Node semantics), so this spy cannot mask the bug — pre-fix it stays at 0.
+    let spyBytes = 0;
+    shared.on("data", (c: Buffer) => {
+      spyBytes += c.length;
+    });
+
+    player.playPcmStream(shared, {}); // re-attach the SAME shared readable
+
+    // The re-attached stream must be flowing again, or track C is silent.
+    expect(shared.isPaused()).toBe(false);
+
+    shared.push(Buffer.alloc(FRAME_BYTES * 4)); // "track C" PCM
+    await wait(120);
+
+    // onData must have run (real PCM reached the player), not just silence frames.
+    expect(spyBytes).toBeGreaterThan(0);
+    expect(player.getState()).toBe("playing");
+    player.stop();
+  });
+});
+
+// R3-4: the 20ms frame loop keeps running while paused (so a live-but-silent
+// stream can refill on resume). But the stall/EOF end-detection branches MUST
+// only run while state==="playing" — otherwise pausing a stalled or
+// unknown-duration stream still accumulates emptyFrameAttempts and auto-emits
+// trackEnd (~5s later), making the controller skip the paused track.
+//
+// These tests drive the real url-path frame loop (this.ffmpeg !== null, NOT
+// external mode), which cannot be exercised via playPcmStream (that sets
+// externalMode and suppresses both branches). We inject a fake live ffmpeg +
+// an empty pcmBuffer (a stream that stays alive but never yields a full PCM
+// frame) and run the actual startFrameLoop() under fake timers. `performance`
+// is faked in lockstep with the timer clock so each tick advances a real 20ms,
+// letting us cheaply cross MAX_EMPTY_ATTEMPTS (250 ticks ≈ 5s) deterministically.
+describe("AudioPlayer stall/EOF end-detection is gated on playing state (R3-4)", () => {
+  // Fake `performance` in lockstep with the timer clock so each advanced 20ms is
+  // a real frame tick (the loop computes its delay from performance.now()).
+  const FAKE_TIMER_OPTS: Parameters<typeof vi.useFakeTimers>[0] = {
+    toFake: ["setTimeout", "clearTimeout", "setInterval", "clearInterval", "Date", "performance"],
+  };
+
+  // A player primed as "playing" with a LIVE ffmpeg that never produces a full
+  // PCM frame (unknown duration -> isNearEnd forced true). startFrameLoop() runs
+  // the genuine loop; no real process is spawned (fake ffmpeg has no pid, so the
+  // end path never touches forceCleanup/process.kill).
+  function makeStalledPlaying(): AudioPlayer {
+    const player = new AudioPlayer(silentLogger);
+    const p = player as unknown as {
+      ffmpeg: unknown;
+      currentSongDuration: number;
+      pcmBuffer: Buffer;
+      emptyFrameAttempts: number;
+      framesPlayed: number;
+      state: string;
+      startFrameLoop(): void;
+    };
+    p.ffmpeg = { pid: undefined }; // live ffmpeg, but delivers no PCM
+    p.currentSongDuration = 0; // unknown duration -> isNearEnd === true
+    p.pcmBuffer = Buffer.alloc(0); // always < one PCM frame
+    p.emptyFrameAttempts = 0;
+    p.framesPlayed = 0;
+    p.state = "playing";
+    p.startFrameLoop();
+    return player;
+  }
+
+  it("does NOT emit trackEnd (and stays paused) when a stalled unknown-duration stream is paused past the stall threshold", () => {
+    vi.useFakeTimers(FAKE_TIMER_OPTS);
+    try {
+      const player = makeStalledPlaying();
+      let ended = 0;
+      player.on("trackEnd", () => ended++);
+
+      player.pause();
+      expect(player.getState()).toBe("paused");
+
+      // Advance well past MAX_EMPTY_ATTEMPTS (250 ticks ≈ 5s): ~300 ticks.
+      vi.advanceTimersByTime(20 * 300);
+
+      expect(ended).toBe(0);
+      expect(player.getState()).toBe("paused");
+      player.stop();
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it("STILL emits trackEnd when the SAME stalled unknown-duration stream is left playing (dead-stream recovery #89 preserved)", () => {
+    vi.useFakeTimers(FAKE_TIMER_OPTS);
+    try {
+      const player = makeStalledPlaying(); // stays "playing"
+      let ended = 0;
+      player.on("trackEnd", () => ended++);
+
+      vi.advanceTimersByTime(20 * 300); // cross the 250-tick stall threshold
+
+      expect(ended).toBe(1);
+      expect(player.getState()).toBe("idle");
+      player.stop();
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it("does not spuriously end after a brief pause+resume on a healthy stream", () => {
+    vi.useFakeTimers(FAKE_TIMER_OPTS);
+    try {
+      const player = new AudioPlayer(silentLogger);
+      const p = player as unknown as {
+        ffmpeg: unknown;
+        currentSongDuration: number;
+        pcmBuffer: Buffer;
+        emptyFrameAttempts: number;
+        framesPlayed: number;
+        state: string;
+        startFrameLoop(): void;
+      };
+      // Healthy: a live ffmpeg with a large buffered runway that never drains
+      // empty across the ticks below, so no underrun is ever seen.
+      p.ffmpeg = { pid: undefined };
+      p.currentSongDuration = 0;
+      p.pcmBuffer = Buffer.alloc(FRAME_BYTES * 400);
+      p.emptyFrameAttempts = 0;
+      p.framesPlayed = 0;
+      p.state = "playing";
+      p.startFrameLoop();
+
+      let ended = 0;
+      player.on("trackEnd", () => ended++);
+
+      vi.advanceTimersByTime(20 * 5); // play a few frames
+      player.pause();
+      vi.advanceTimersByTime(20 * 100); // brief pause (buffer NOT drained while paused)
+      player.resume();
+      expect(player.getState()).toBe("playing");
+      vi.advanceTimersByTime(20 * 100); // resume; still plenty of runway
+
+      expect(ended).toBe(0);
+      expect(player.getState()).toBe("playing");
+      player.stop();
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+});

src/audio/player.ts

@@ -1,15 +1,19 @@
 import { spawn, execSync, type ChildProcess } from "node:child_process";
 import { EventEmitter } from "node:events";
 import { createRequire } from "node:module";
-import { accessSync, chmodSync, constants } from "node:fs";
+import { accessSync, chmodSync, constants, mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
 import { createOpusEncoder, PCM_FRAME_BYTES, type Encoder } from "./encoder.js";
+import type { Readable } from "node:stream";
 import type { Logger } from "../logger.js";
 
-// ffmpeg-static is a CJS module that exports the path to the bundled ffmpeg binary.
 const require = createRequire(import.meta.url);
 const ffmpegPath: string | null = require("ffmpeg-static");
 
-/** Ensure the given binary has execute permission. */
+/** 全局 PID 追踪器，防止进程在类实例切换时沦为孤儿进程 （ */
+const globalActivePids = new Set<number>();
+
 function isExecutable(binPath: string): boolean {
   try {
     accessSync(binPath, constants.X_OK);
@@ -25,7 +29,6 @@ function isExecutable(binPath: string): boolean {
   }
 }
 
-/** Test if an ffmpeg binary actually works by running -version. */
 function ffmpegWorks(bin: string): boolean {
   try {
     execSync(`"${bin}" -version`, { timeout: 5000, stdio: "pipe" });
@@ -35,32 +38,123 @@ function ffmpegWorks(bin: string): boolean {
   }
 }
 
-/** Resolved once at module load — prefer bundled ffmpeg-static, fall back to system. */
 const resolvedFfmpeg: string = (() => {
-  // On Windows, ffmpeg-static may return a path with backslashes; on Linux/macOS
-  // it may return a Windows .exe path if node_modules was copied cross-platform.
+  if (ffmpegWorks("ffmpeg")) return "ffmpeg";
   const isWinPath = ffmpegPath ? /\\/.test(ffmpegPath) || ffmpegPath.endsWith(".exe") : false;
   const onWindows = process.platform === "win32";
-
-  // Only try bundled binary if platform matches
   if (ffmpegPath && (onWindows === isWinPath)) {
-    if (isExecutable(ffmpegPath) && ffmpegWorks(ffmpegPath)) {
-      return ffmpegPath;
-    }
+    if (isExecutable(ffmpegPath) && ffmpegWorks(ffmpegPath)) return ffmpegPath;
   }
-  // Fall back to system ffmpeg
-  if (ffmpegWorks("ffmpeg")) {
-    return "ffmpeg";
-  }
-  // Last resort: always use "ffmpeg" so spawn error is clear, never use a cross-platform path
   return "ffmpeg";
 })();
 
-/** Resolve ffmpeg binary: prefer bundled ffmpeg-static, fall back to system PATH. */
-function getFfmpegCommand(): string {
+export function getFfmpegCommand(): string {
   return resolvedFfmpeg;
 }
 
+const BROWSER_UA =
+  "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36";
+
+// Old jdymusic CDN paths (e.g. /jdymusic/obj/...) RST direct Node-stack
+// requests on Windows; same URL works when fetched via WinHTTP. Empirically,
+// /jd-musicrep-ts/ and /ymusic/ paths do not have this restriction.
+export function shouldUsePowerShellDownload(
+  url: string,
+  platform: string = process.platform,
+): boolean {
+  return platform === "win32" && url.includes("/jdymusic/");
+}
+
+export function cleanupTempDir(dir: string): void {
+  try {
+    rmSync(dir, { recursive: true, force: true });
+  } catch {
+    // best-effort
+  }
+}
+
+export function buildFfmpegArgs(url: string, seekSeconds: number): string[] {
+  const args: string[] = [];
+  const isHttp = /^https?:\/\//i.test(url);
+  const isBilibili = isHttp && (url.includes("bilivideo") || url.includes("bilibili"));
+
+  if (isBilibili) {
+    args.push(
+      "-headers",
+      `Referer: https://www.bilibili.com\r\nUser-Agent: ${BROWSER_UA}\r\n`,
+    );
+  } else if (isHttp && (url.includes("music.126.net") || url.includes("music.163.com"))) {
+    args.push(
+      "-headers",
+      `Referer: https://music.163.com/\r\nUser-Agent: ${BROWSER_UA}\r\n`,
+    );
+  }
+
+  if (isHttp) {
+    args.push(
+      "-reconnect", "1",
+      // Long B站 streams sit on a CDN whose session/token can close the
+      // connection mid-file (premature EOF). Without this, FFmpeg treats that
+      // EOF as end-of-input and stops ~partway through (see #89); with it, it
+      // re-issues a Range request from the current offset to finish the stream.
+      "-reconnect_at_eof", "1",
+      "-reconnect_streamed", "1",
+      "-reconnect_delay_max", "30",
+      "-reconnect_on_network_error", "1",
+      "-reconnect_on_http_error", "4xx,5xx",
+    );
+  }
+  // B站's CDN serves Range requests, so seek input-side: FFmpeg jumps straight
+  // to the byte offset. Output-side seek would download and decode everything
+  // before the target first — minutes for a resume deep into a 3-hour video
+  // (#161), long enough to trip the stall watchdog.
+  const inputSideSeek = isBilibili;
+  if (seekSeconds > 0 && inputSideSeek) args.push("-ss", String(seekSeconds));
+  args.push("-i", url);
+  // Output-side seek (after -i): works on CDNs that reject Range/keyframe seeks (NetEase music.126.net).
+  if (seekSeconds > 0 && !inputSideSeek) args.push("-ss", String(seekSeconds));
+  args.push("-f", "s16le", "-ar", "48000", "-ac", "2", "-acodec", "pcm_s16le", "-");
+
+  return args;
+}
+
+/**
+ * Decide whether to end the current track when FFmpeg is still alive but has
+ * produced no decodable audio for `emptyAttempts` consecutive frame ticks.
+ *
+ * - Near the song end we end quickly (`maxEmptyAttempts`): a normal EOF.
+ * - Far from the end we wait much longer (`maxStallAttempts`) before giving up,
+ *   so a transient buffer underrun on a healthy stream does NOT cause a false
+ *   skip — but a genuinely dead stream (e.g. a long B站 stream whose CDN session
+ *   expired mid-playback, #89) still recovers by advancing instead of going
+ *   permanently silent.
+ */
+export function shouldEndOnStall(
+  emptyAttempts: number,
+  isNearEnd: boolean,
+  maxEmptyAttempts: number,
+  maxStallAttempts: number,
+): boolean {
+  if (isNearEnd && emptyAttempts >= maxEmptyAttempts) return true;
+  if (emptyAttempts >= maxStallAttempts) return true;
+  return false;
+}
+
+/**
+ * Maps a 0-100 volume value to a linear PCM gain factor (#84).
+ *
+ * Continuous and strictly monotonic over [0,100]: 0 at vol 0 and exactly 1.0 at
+ * vol 100. The previous mapping was a two-piece step — gain = (vol/100)*0.2 for
+ * vol<100 (so the whole 0-99 range only spanned 0..0.198, making 80->99 feel
+ * flat) then a raw passthrough at vol===100 (a ~5x jump). This single curve keeps
+ * the low end gentle but ramps smoothly toward full loudness near the top, so the
+ * slider feels proportional with no dead zone and no discontinuity at 100.
+ */
+export function volumeToFactor(volume: number): number {
+  const x = Math.max(0, Math.min(100, volume)) / 100;
+  return 0.2 * x + 0.8 * Math.pow(x, 8);
+}
+
 export interface PlayerEvents {
   frame: (opusFrame: Buffer) => void;
   trackEnd: () => void;
@@ -76,20 +170,57 @@ export class AudioPlayer extends EventEmitter {
   private encoder: Encoder;
   private state: PlayerState = "idle";
   private volume = 75;
+  /**
+   * A transient gain envelope layered on top of the persisted user volume.
+   * Voice ducking drives this value; keeping it separate means a temporary
+   * attenuation can never leak into the saved volume setting.
+   */
+  private duckingRampStartGain = 1;
+  private duckingTargetGain = 1;
+  private duckingRampStartedAt = 0;
+  private duckingRampDurationMs = 0;
   private pcmBuffer: Buffer = Buffer.alloc(0);
   private logger: Logger;
   private frameLoopRunning = false;
   private nextFrameTime = 0;
   private currentUrl = "";
   private seekOffset = 0;
-  private framesPlayed = 0; // ground truth: number of 20ms frames sent
+  private framesPlayed = 0;
   private sessionId = 0;
-  private static readonly BUFFER_HIGH_WATER = 960 * 1024; // ~5s of PCM at 48kHz stereo
-  private static readonly BUFFER_LOW_WATER = 480 * 1024;  // ~2.5s
+  private static readonly BUFFER_HIGH_WATER = 640 * 1024;
+  private static readonly BUFFER_LOW_WATER = 256 * 1024;
   private ffmpegPaused = false;
-  private spawnFailed = false; // true if ffmpeg spawn errored (prevent trackEnd cascade)
+  private spawnFailed = false;
   private consecutiveFailures = 0;
   private static readonly MAX_CONSECUTIVE_FAILURES = 3;
+  private healthyFrames = 0;
+  private static readonly HEALTHY_FRAME_RESET = 50; // ~1 second of audio
+  private downloader: ChildProcess | null = null;
+  private currentTempDir: string | null = null;
+  private emptyFrameAttempts = 0;
+  private static readonly MAX_EMPTY_ATTEMPTS = 250; // ~5秒的20ms帧循环（增加容错）
+  // Far-from-end stall watchdog (#89): if FFmpeg is alive but produces no audio
+  // for this many consecutive frame ticks (~60s at 20ms/frame), treat the stream
+  // as dead and advance instead of staying silent forever. Set high so a normal
+  // transient underrun never trips it.
+  private static readonly MAX_STALL_ATTEMPTS = 3000;
+  private currentSongDuration = 0; // 当前歌曲总时长（秒）
+
+  // --- External PCM mode (Stage 2: go-librespot Spotify sidecar) ---
+  // When true, PCM arrives from a long-lived external Readable instead of a
+  // per-URL ffmpeg: this.ffmpeg stays null, and the underrun-driven trackEnd
+  // branches are suppressed (advance is driven by the controller, not EOF).
+  //
+  // CORRECTION C2: externalStream is the backend's LONG-LIVED, SHARED ffmpeg
+  // stdout (one stream reused across every track). Teardown must DETACH (remove
+  // the listeners we added + pause), never destroy it. We keep references to the
+  // exact handler functions so detach can removeListener precisely.
+  private externalMode = false;
+  private externalStream: Readable | null = null;
+  private onExternalEnd: (() => void) | null = null;
+  private externalDataHandler: ((chunk: Buffer) => void) | null = null;
+  private externalEndHandler: (() => void) | null = null;
+  private externalErrorHandler: ((err: Error) => void) | null = null;
 
   constructor(logger: Logger) {
     super();
@@ -97,113 +228,381 @@ export class AudioPlayer extends EventEmitter {
     this.logger = logger;
   }
 
-  play(url: string, seekSeconds = 0): void {
+  play(url: string, seekSeconds = 0, songDuration = 0): void {
+    // 1. 停止当前所有播放，自增 sessionId 屏蔽旧回调 （
     this.stop();
-    this.sessionId++;
-    const playSessionId = this.sessionId;
+
+    const currentSessionId = this.sessionId; 
     this.currentUrl = url;
     this.seekOffset = seekSeconds;
     this.framesPlayed = 0;
+    this.healthyFrames = 0;
     this.ffmpegPaused = false;
     this.spawnFailed = false;
+    this.emptyFrameAttempts = 0;
+    this.currentSongDuration = songDuration;
 
-    // Prevent rapid-fire spawn attempts when ffmpeg is broken
     if (this.consecutiveFailures >= AudioPlayer.MAX_CONSECUTIVE_FAILURES) {
-      this.logger.error(
-        { failures: this.consecutiveFailures, ffmpeg: getFfmpegCommand() },
-        "Too many consecutive ffmpeg failures — ffmpeg binary may be missing or broken. Stopping playback."
-      );
+      this.logger.error({ failures: this.consecutiveFailures }, "FFmpeg failures limit reached");
       this.state = "idle";
-      this.emit("error", new Error("ffmpeg unavailable after repeated failures"));
+      this.emit("error", new Error("ffmpeg unavailable"));
       return;
     }
 
-    this.logger.info({ url: url.slice(0, 80), seek: seekSeconds }, "Starting playback");
-
-    const args: string[] = [];
-
-    // BiliBili CDN requires Referer header for audio playback
-    if (url.includes("bilivideo") || url.includes("bilibili")) {
-      args.push(
-        "-headers",
-        "Referer: https://www.bilibili.com\r\nUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36\r\n"
-      );
+    if (shouldUsePowerShellDownload(url)) {
+      this.playViaPowerShellDownload(url, seekSeconds, currentSessionId);
+      return;
     }
 
-    args.push(
-      "-reconnect", "1",
-      "-reconnect_streamed", "1",
-      "-reconnect_delay_max", "5",
-    );
-    if (seekSeconds > 0) {
-      args.push("-ss", String(seekSeconds));
-    }
-    args.push(
-      "-i", url,
-      "-f", "s16le",
-      "-ar", "48000",
-      "-ac", "2",
-      "-acodec", "pcm_s16le",
-      "-",
-    );
+    const args = buildFfmpegArgs(url, seekSeconds);
 
     const ffmpegBin = getFfmpegCommand();
-    this.logger.info({ ffmpeg: ffmpegBin }, "Using ffmpeg binary");
     this.ffmpeg = spawn(ffmpegBin, args, { stdio: ["ignore", "pipe", "pipe"] });
+    
+    const currentPid = this.ffmpeg.pid;
+    if (currentPid) {
+      globalActivePids.add(currentPid);
+      this.logger.debug({ pid: currentPid, sessionId: currentSessionId }, "FFmpeg spawned");
+    }
 
-    // Prevent stream errors from crashing the process
-    this.ffmpeg.stdout!.on("error", (err) => {
-      this.logger.warn({ err }, "FFmpeg stdout error");
-    });
-    this.ffmpeg.stderr!.on("error", (err) => {
-      this.logger.warn({ err }, "FFmpeg stderr error");
-    });
-
-    let gotFirstData = false;
     this.ffmpeg.stdout!.on("data", (chunk: Buffer) => {
-      if (!gotFirstData) {
-        gotFirstData = true;
-        this.logger.info({ bytes: chunk.length }, "FFmpeg: first PCM data received");
+      // 2. 严格校验 sessionId，防止老进程的数据混入新播放请求 （
+      if (this.sessionId !== currentSessionId) {
+        return;
       }
+      
       this.pcmBuffer = Buffer.concat([this.pcmBuffer, chunk]);
-      // Backpressure: pause FFmpeg stdout when buffer is too large
       if (this.pcmBuffer.length > AudioPlayer.BUFFER_HIGH_WATER && !this.ffmpegPaused && this.ffmpeg?.stdout) {
         this.ffmpeg.stdout.pause();
         this.ffmpegPaused = true;
       }
     });
 
-    this.ffmpeg.on("close", (code, signal) => {
-      this.logger.info({ exitCode: code, signal, gotData: gotFirstData, framesPlayed: this.framesPlayed }, "FFmpeg process closed");
-      if (this.sessionId === playSessionId) {
-        this.ffmpeg = null; // Signal frame loop that no more data is coming
+    this.ffmpeg.on("exit", (code, signal) => {
+      if (currentPid) globalActivePids.delete(currentPid);
+      this.logger.info({ pid: currentPid, code, signal }, "FFmpeg exited");
+      
+      // 只有当前会话的进程结束才置空变量
+      if (this.sessionId === currentSessionId) {
+        this.ffmpeg = null;
       }
     });
 
     this.ffmpeg.on("error", (err) => {
-      this.logger.error({ err }, "FFmpeg error");
-      if (this.sessionId === playSessionId) {
+      if (this.sessionId === currentSessionId) {
         this.spawnFailed = true;
         this.consecutiveFailures++;
         this.emit("error", err);
       }
     });
 
-    // Log FFmpeg stderr at info level for debugging playback issues
-    this.ffmpeg.stderr!.on("data", (data: Buffer) => {
-      const msg = data.toString().trimEnd();
-      // Log important FFmpeg messages at info level
-      if (msg.includes("Error") || msg.includes("error") || msg.includes("HTTP") || msg.includes("Opening") || msg.includes("Stream")) {
-        this.logger.info({ ffmpegStderr: msg }, "FFmpeg stderr");
-      } else {
-        this.logger.debug({ stderr: msg }, "FFmpeg stderr");
+    this.state = "playing";
+    this.startFrameLoop();
+  }
+
+  private playViaPowerShellDownload(url: string, seekSeconds: number, sessionId: number): void {
+    const tempDir = mkdtempSync(join(tmpdir(), "tsbot-jdymusic-"));
+    const tempFile = join(tempDir, "song.audio");
+    this.currentTempDir = tempDir;
+
+    const psScript = [
+      "$ErrorActionPreference = 'Stop'",
+      "$ProgressPreference = 'SilentlyContinue'",
+      "$wc = New-Object System.Net.WebClient",
+      "$wc.Headers.Add('User-Agent', $env:DL_UA)",
+      "$wc.Headers.Add('Referer', $env:DL_REFERER)",
+      "$wc.DownloadFile($env:DL_URL, $env:DL_OUT)",
+    ].join("; ");
+
+    this.logger.debug({ sessionId, tempFile }, "Downloading via PowerShell (jdymusic CDN)");
+
+    const ps = spawn(
+      "powershell",
+      ["-NoProfile", "-ExecutionPolicy", "Bypass", "-Command", psScript],
+      {
+        env: {
+          ...process.env,
+          DL_URL: url,
+          DL_OUT: tempFile,
+          DL_UA: BROWSER_UA,
+          DL_REFERER: "https://music.163.com/",
+        },
+        stdio: ["ignore", "pipe", "pipe"],
+      },
+    );
+    this.downloader = ps;
+
+    let stderrTail = "";
+    ps.stderr!.on("data", (chunk: Buffer) => {
+      stderrTail = (stderrTail + chunk.toString()).slice(-500);
+    });
+
+    ps.on("exit", (code, signal) => {
+      if (this.sessionId !== sessionId) {
+        cleanupTempDir(tempDir);
+        return;
+      }
+      this.downloader = null;
+      if (code !== 0) {
+        this.logger.warn({ code, signal, stderr: stderrTail }, "PowerShell download failed");
+        this.spawnFailed = true;
+        this.consecutiveFailures++;
+        this.state = "idle";
+        cleanupTempDir(tempDir);
+        this.currentTempDir = null;
+        this.emit("error", new Error(`PowerShell download exited ${code}`));
+        return;
+      }
+      this.spawnFfmpegFromFile(tempFile, seekSeconds, sessionId);
+    });
+
+    ps.on("error", (err) => {
+      if (this.sessionId !== sessionId) return;
+      this.downloader = null;
+      this.spawnFailed = true;
+      this.consecutiveFailures++;
+      cleanupTempDir(tempDir);
+      this.currentTempDir = null;
+      this.emit("error", err);
+    });
+
+    // Mark playing but DO NOT start the frame loop here — the loop's
+    // "no ffmpeg + empty buffer → trackEnd" branch would fire on the very
+    // first tick, before the PowerShell download even completes. The
+    // frame loop is started inside spawnFfmpegFromFile() once ffmpeg is
+    // alive and producing PCM.
+    this.state = "playing";
+  }
+
+  private spawnFfmpegFromFile(tempFile: string, seekSeconds: number, sessionId: number): void {
+    if (this.sessionId !== sessionId) {
+      if (this.currentTempDir) {
+        cleanupTempDir(this.currentTempDir);
+        this.currentTempDir = null;
+      }
+      return;
+    }
+
+    const args = buildFfmpegArgs(tempFile, seekSeconds);
+    const ffmpegBin = getFfmpegCommand();
+    this.ffmpeg = spawn(ffmpegBin, args, { stdio: ["ignore", "pipe", "pipe"] });
+
+    const currentPid = this.ffmpeg.pid;
+    if (currentPid) {
+      globalActivePids.add(currentPid);
+      this.logger.debug({ pid: currentPid, sessionId }, "FFmpeg spawned (from temp file)");
+    }
+    const tempDirToCleanup = this.currentTempDir;
+
+    this.ffmpeg.stdout!.on("data", (chunk: Buffer) => {
+      if (this.sessionId !== sessionId) return;
+      this.pcmBuffer = Buffer.concat([this.pcmBuffer, chunk]);
+      if (this.pcmBuffer.length > AudioPlayer.BUFFER_HIGH_WATER && !this.ffmpegPaused && this.ffmpeg?.stdout) {
+        this.ffmpeg.stdout.pause();
+        this.ffmpegPaused = true;
       }
     });
 
+    this.ffmpeg.on("exit", (code, signal) => {
+      if (currentPid) globalActivePids.delete(currentPid);
+      this.logger.info({ pid: currentPid, code, signal }, "FFmpeg exited");
+      if (this.sessionId === sessionId) {
+        this.ffmpeg = null;
+        if (this.currentTempDir === tempDirToCleanup) this.currentTempDir = null;
+      }
+      if (tempDirToCleanup) cleanupTempDir(tempDirToCleanup);
+    });
+
+    this.ffmpeg.on("error", (err) => {
+      if (this.sessionId === sessionId) {
+        this.spawnFailed = true;
+        this.consecutiveFailures++;
+        this.emit("error", err);
+      }
+    });
+
+    // Now that ffmpeg is producing PCM, run the frame loop.
+    this.startFrameLoop();
+  }
+
+  /**
+   * External-PCM mode (Stage 2 go-librespot Spotify sidecar).
+   *
+   * Feeds an already-normalized 48kHz/s16le/stereo PCM Readable (the
+   * go-librespot FIFO -> ffmpeg output) straight into the existing pcmBuffer +
+   * 20ms frame loop + Opus encoder + "frame" emission, WITHOUT spawning a
+   * per-URL ffmpeg. The url play() path is left completely untouched.
+   *
+   * Track advance is NOT driven by buffer underrun here (the sidecar stream is
+   * continuous and never EOFs per song); the caller drives advance via the
+   * SpotifyController "trackEnded" WebSocket event. onExternalEnd fires only if
+   * the underlying readable itself ends or errors.
+   *
+   * CORRECTION C2: the readable is the backend's long-lived, SHARED ffmpeg
+   * stdout reused across every track — a gapless track change is just LATER PCM
+   * on this SAME already-attached stream (no re-attach). Teardown DETACHES
+   * (removes our listeners + pauses); it never destroys the shared stream.
+   */
+  playPcmStream(readable: Readable, opts: { onExternalEnd?: () => void } = {}): void {
+    // 1. Fence current playback: stop() bumps sessionId, clears pcmBuffer, kills
+    //    any ffmpeg, and DETACHES (never destroys) any prior external stream.
+    this.stop();
+
+    const currentSessionId = this.sessionId;
+    this.externalMode = true;
+    this.externalStream = readable;
+    this.onExternalEnd = opts.onExternalEnd ?? null;
+    // Leave this.ffmpeg = null; clear currentUrl so seek() cannot respawn ffmpeg.
+    this.currentUrl = "";
+    this.seekOffset = 0;
+    this.framesPlayed = 0;
+    this.healthyFrames = 0;
+    this.ffmpegPaused = false;
+    this.spawnFailed = false;
+    this.emptyFrameAttempts = 0;
+    this.currentSongDuration = 0;
+
+    // Same ingestion + high-water backpressure as the ffmpeg.stdout handler,
+    // but pausing the Readable instead of ffmpeg.stdout. sessionId-guarded so
+    // stale sidecar PCM can't leak into a new track after stop()/skip. Handler
+    // refs are stored so detach can remove exactly these listeners (C2).
+    const onData = (chunk: Buffer): void => {
+      if (this.sessionId !== currentSessionId) return;
+      this.pcmBuffer = Buffer.concat([this.pcmBuffer, chunk]);
+      if (
+        this.pcmBuffer.length > AudioPlayer.BUFFER_HIGH_WATER &&
+        !this.ffmpegPaused &&
+        this.externalStream === readable
+      ) {
+        readable.pause();
+        this.ffmpegPaused = true;
+      }
+    };
+    const onEnd = (): void => {
+      if (this.sessionId !== currentSessionId) return;
+      this.onExternalEnd?.();
+    };
+    const onError = (err: Error): void => {
+      if (this.sessionId !== currentSessionId) return;
+      this.logger.warn({ err }, "External PCM stream error");
+      this.onExternalEnd?.();
+    };
+
+    this.externalDataHandler = onData;
+    this.externalEndHandler = onEnd;
+    this.externalErrorHandler = onError;
+
+    readable.on("data", onData);
+    readable.on("end", onEnd);
+    readable.on("error", onError);
+
+    // CORRECTION C1: explicitly resume a re-attached, previously-paused Readable.
+    // The backend's SHARED stdout is reused across every track; a prior non-spotify
+    // advance ran stop() -> detachExternalStream() which pause()d it (state.flowing =
+    // false). Node's Readable.on('data') only auto-resumes when flowing !== false, so
+    // re-attaching a paused stream would leave it stuck: onData never fires, pcmBuffer
+    // stays empty, and a later Spotify track plays only silence. resume() is safe/
+    // idempotent on a first attach (never-paused/already-flowing) stream.
+    readable.resume();
+
     this.state = "playing";
     this.startFrameLoop();
   }
 
+  /**
+   * CORRECTION C2: DETACH, never destroy. The external readable is the backend's
+   * long-lived, SHARED ffmpeg stdout reused across every track; destroying it
+   * would kill the sidecar pipe for all future tracks. Remove only the listeners
+   * WE added and pause the flow so stale PCM stops landing in pcmBuffer, then
+   * clear the external-mode state.
+   */
+  private detachExternalStream(): void {
+    const stream = this.externalStream;
+    if (stream) {
+      if (this.externalDataHandler) stream.off("data", this.externalDataHandler);
+      if (this.externalEndHandler) stream.off("end", this.externalEndHandler);
+      if (this.externalErrorHandler) stream.off("error", this.externalErrorHandler);
+      try {
+        stream.pause();
+      } catch {
+        /* best-effort: never destroy the shared sidecar stream */
+      }
+    }
+    this.externalDataHandler = null;
+    this.externalEndHandler = null;
+    this.externalErrorHandler = null;
+    this.externalStream = null;
+    this.externalMode = false;
+    this.onExternalEnd = null;
+  }
+
+  stop(): void {
+    // 3. 递增 ID 是最有效的逻辑“隔离墙”
+    this.sessionId++; 
+    this.frameLoopRunning = false;
+    
+    // 立即清空缓冲区，确保切歌瞬间静音 （
+    this.pcmBuffer = Buffer.alloc(0);
+
+    if (this.ffmpeg) {
+      const procToKill = this.ffmpeg;
+      const pidToKill = procToKill.pid;
+      this.ffmpeg = null;
+
+      if (pidToKill) {
+        this.forceCleanup(procToKill, pidToKill);
+      }
+    }
+
+    if (this.downloader) {
+      const ps = this.downloader;
+      this.downloader = null;
+      try { ps.kill("SIGTERM"); } catch { /* already gone */ }
+    }
+
+    if (this.currentTempDir) {
+      cleanupTempDir(this.currentTempDir);
+      this.currentTempDir = null;
+    }
+
+    // CORRECTION C2: tear down external mode by DETACHING (remove our listeners +
+    // pause) — never destroy the shared, long-lived sidecar stream. The
+    // sessionId++ above already fences the external data/end/error handlers.
+    this.detachExternalStream();
+
+    this.ffmpegPaused = false;
+    this.spawnFailed = false;
+    this.state = "idle";
+    this.currentUrl = "";
+    this.seekOffset = 0;
+    this.framesPlayed = 0;
+    this.healthyFrames = 0;
+  }
+
+  private forceCleanup(proc: ChildProcess, pid: number): void {
+    if (!globalActivePids.has(pid)) return;
+
+    try {
+      proc.kill("SIGTERM");
+    } catch (e) { /* ignore */ }
+
+    const killTimeout = setTimeout(() => {
+      try {
+        process.kill(pid, 0); 
+        process.kill(pid, "SIGKILL");
+      } catch (e) {
+      } finally {
+        globalActivePids.delete(pid);
+      }
+    }, 1500);
+
+    proc.unref();
+    proc.once("exit", () => {
+      clearTimeout(killTimeout);
+      globalActivePids.delete(pid);
+    });
+  }
+
   private startFrameLoop(): void {
     if (this.frameLoopRunning) return;
     this.frameLoopRunning = true;
@@ -213,53 +612,116 @@ export class AudioPlayer extends EventEmitter {
 
   private scheduleNextFrame(): void {
     if (!this.frameLoopRunning) return;
-
     const loopSessionId = this.sessionId;
-
     this.nextFrameTime += FRAME_DURATION_MS;
-    const now = performance.now();
-    const delay = Math.max(0, this.nextFrameTime - now);
+    const delay = Math.max(0, this.nextFrameTime - performance.now());
 
     setTimeout(() => {
-      // Discard callback from a stale play session
-      if (loopSessionId !== this.sessionId) return;
-      if (!this.frameLoopRunning) return;
+      // 这里的校验能防止旧的定时器回调处理新 Session 的逻辑 （
+      if (loopSessionId !== this.sessionId || !this.frameLoopRunning) return;
 
-      if (this.state === "playing") {
-        this.sendNextFrame();
-      } else if (this.state === "paused") {
-        this.nextFrameTime = performance.now();
+      if (this.state === "playing") this.sendNextFrame();
+      else if (this.state === "paused") this.nextFrameTime = performance.now();
+
+      // 检测pcmBuffer不足PCM_FRAME_BYTES导致连续循环卡死：
+      // 条件1: FFmpeg仍在运行但缓冲区不足一帧，且连续多次无法获取数据
+      // 条件2: 已播放时间接近歌曲结尾（最后5秒内）或未知时长
+      const elapsed = this.getElapsed();
+      const isNearEnd = this.currentSongDuration > 0 
+        ? (this.currentSongDuration - elapsed) <= 5 // 距离结尾不足5秒
+        : true; // 未知时长时保守处理
+      
+      // External mode: the sidecar PCM stream is continuous and never EOFs per
+      // song; a transient underrun must NOT end the track (advance is driven by
+      // the controller). Skip BOTH drain/stall branches while externalMode.
+      //
+      // R3-4: gate BOTH end-detection branches on state==="playing". While paused
+      // the loop still ticks (so a resumed stream can refill), but it must NOT
+      // accumulate stall attempts or emit trackEnd — otherwise pausing a stalled/
+      // unknown-duration stream would auto-advance ~5s later. Because the if is
+      // now false while paused, the else resets emptyFrameAttempts to 0, so a
+      // resumed healthy stream starts fresh and never ends instantly.
+      if (this.state === "playing" && !this.externalMode && this.ffmpeg !== null && this.pcmBuffer.length < PCM_FRAME_BYTES) {
+        this.emptyFrameAttempts++;
+        
+        // End the track when FFmpeg has gone silent: quickly if we're near the
+        // end (normal EOF), or after a much longer stall window if we're not
+        // (a dead/expired stream — #89 — so playback recovers instead of going
+        // permanently silent).
+        if (
+          shouldEndOnStall(
+            this.emptyFrameAttempts,
+            isNearEnd,
+            AudioPlayer.MAX_EMPTY_ATTEMPTS,
+            AudioPlayer.MAX_STALL_ATTEMPTS,
+          )
+        ) {
+          this.logger.info({
+            sessionId: this.sessionId,
+            emptyAttempts: this.emptyFrameAttempts,
+            bufferSize: this.pcmBuffer.length,
+            elapsed: Math.round(elapsed),
+            duration: this.currentSongDuration,
+            remaining: Math.round(this.currentSongDuration - elapsed),
+            nearEnd: isNearEnd,
+          }, "FFmpeg stopped outputting data, ending track");
+          this.frameLoopRunning = false;
+          // The outer gate guarantees state==="playing" here, so no !=="idle"
+          // guard is needed: end the track directly.
+          this.state = "idle";
+          // 清理FFmpeg进程
+          if (this.ffmpeg) {
+            const procToKill = this.ffmpeg;
+            const pidToKill = procToKill.pid;
+            this.ffmpeg = null;
+            if (pidToKill) {
+              this.forceCleanup(procToKill, pidToKill);
+            }
+          }
+          this.consecutiveFailures = 0;
+          this.emit("trackEnd");
+          return;
+        }
+      } else {
+        // 成功获取数据或FFmpeg已结束，重置计数器
+        this.emptyFrameAttempts = 0;
       }
 
-      if (!this.ffmpeg && this.pcmBuffer.length < PCM_FRAME_BYTES) {
+      // R3-4: likewise gated on state==="playing" — a drained/EOF'd stream must
+      // not emit trackEnd while paused; end-detection resumes on resume().
+      if (this.state === "playing" && !this.externalMode && !this.ffmpeg && this.pcmBuffer.length < PCM_FRAME_BYTES) {
         this.frameLoopRunning = false;
-        if (this.state !== "idle") {
-          this.state = "idle";
-          // Don't emit trackEnd if ffmpeg spawn failed — prevents infinite retry cascade
-          if (this.spawnFailed) {
-            this.logger.warn("Suppressing trackEnd due to ffmpeg spawn failure");
-          } else {
-            this.consecutiveFailures = 0; // Reset on successful track completion
-            this.emit("trackEnd");
-          }
+        // Outer gate guarantees state==="playing"; end directly (no !=="idle" guard).
+        this.state = "idle";
+        if (!this.spawnFailed) {
+          this.consecutiveFailures = 0;
+          this.emit("trackEnd");
         }
         return;
       }
-
       this.scheduleNextFrame();
     }, delay);
   }
 
   private sendNextFrame(): void {
-    if (this.pcmBuffer.length < PCM_FRAME_BYTES) return;
-
+    if (this.pcmBuffer.length < PCM_FRAME_BYTES) {
+      // External mode: the sidecar PCM stream is long-lived and must NOT end on
+      // a transient underrun. Emit an encoded silence frame so the 20ms voice
+      // timeline stays continuous instead of returning (which would desync TS).
+      if (this.externalMode) this.emitSilenceFrame();
+      return;
+    }
     const pcmFrame = this.pcmBuffer.subarray(0, PCM_FRAME_BYTES);
     this.pcmBuffer = this.pcmBuffer.subarray(PCM_FRAME_BYTES);
 
-    // Backpressure: resume FFmpeg stdout when buffer drains below low-water mark
-    if (this.ffmpegPaused && this.pcmBuffer.length < AudioPlayer.BUFFER_LOW_WATER && this.ffmpeg?.stdout) {
-      this.ffmpeg.stdout.resume();
-      this.ffmpegPaused = false;
+    if (this.ffmpegPaused && this.pcmBuffer.length < AudioPlayer.BUFFER_LOW_WATER) {
+      if (this.externalMode && this.externalStream) {
+        this.externalStream.resume();
+        this.ffmpegPaused = false;
+      } else if (this.ffmpeg?.stdout) {
+        this.ffmpeg.stdout.resume();
+        this.ffmpegPaused = false;
+      }
     }
 
     try {
@@ -267,94 +729,113 @@ export class AudioPlayer extends EventEmitter {
       const opusFrame = this.encoder.encode(adjusted);
       this.emit("frame", opusFrame);
       this.framesPlayed++;
-
-      if (this.framesPlayed === 1) {
-        this.logger.info({ opusBytes: opusFrame.length }, "First audio frame encoded and emitted");
-      }
-      // Log every ~10 seconds (500 frames * 20ms = 10s)
-      if (this.framesPlayed % 500 === 0) {
-        this.logger.debug({ framesPlayed: this.framesPlayed, elapsed: this.getElapsed() }, "Playback progress");
+      this.healthyFrames++;
+      if (this.healthyFrames >= AudioPlayer.HEALTHY_FRAME_RESET) {
+        this.consecutiveFailures = 0;
+        this.healthyFrames = 0;
       }
     } catch (err) {
-      this.logger.error({ err }, "Error encoding/sending audio frame");
+      this.emit("error", err as Error);
+    }
+  }
+
+  private emitSilenceFrame(): void {
+    try {
+      const opusFrame = this.encoder.encode(Buffer.alloc(PCM_FRAME_BYTES));
+      this.emit("frame", opusFrame);
+      this.framesPlayed++;
+    } catch (err) {
       this.emit("error", err as Error);
     }
   }
 
   private applyVolume(pcm: Buffer): Buffer {
-    if (this.volume === 100) return Buffer.from(pcm);
-    const factor = this.volume / 100;
+    const baseFactor = volumeToFactor(this.volume);
+    const now = performance.now();
+    const startDuckingGain = this.duckingGainAt(now);
+    const endDuckingGain = this.duckingGainAt(now + FRAME_DURATION_MS);
+    const startFactor = baseFactor * startDuckingGain;
+    const endFactor = baseFactor * endDuckingGain;
+
+    if (startFactor >= 1 && endFactor >= 1) {
+      return Buffer.from(pcm);
+    }
+
     const out = Buffer.alloc(pcm.length);
+    // Most frames are outside the short attack/release windows. Preserve the
+    // old constant-factor hot path instead of doing interpolation per sample.
+    if (startFactor === endFactor) {
+      for (let i = 0; i < pcm.length; i += 2) {
+        const sample = Math.round(pcm.readInt16LE(i) * startFactor);
+        out.writeInt16LE(Math.max(-32768, Math.min(32767, sample)), i);
+      }
+      return out;
+    }
+
+    // PCM is fixed at stereo s16le. Use one gain for each L/R pair so a ramp
+    // never creates a tiny channel imbalance, and span the whole 20 ms frame.
+    const stereoFrames = Math.max(1, Math.ceil(pcm.length / 4));
     for (let i = 0; i < pcm.length; i += 2) {
-      let sample = pcm.readInt16LE(i);
-      sample = Math.round(sample * factor);
-      if (sample > 32767) sample = 32767;
-      else if (sample < -32768) sample = -32768;
-      out.writeInt16LE(sample, i);
+      const frameIndex = Math.floor(i / 4);
+      const progress = stereoFrames === 1 ? 0 : frameIndex / (stereoFrames - 1);
+      const factor = startFactor + (endFactor - startFactor) * progress;
+      const sample = Math.round(pcm.readInt16LE(i) * factor);
+      out.writeInt16LE(Math.max(-32768, Math.min(32767, sample)), i);
     }
     return out;
   }
 
-  /** Actual elapsed time in seconds (ground truth from frame count) */
-  getElapsed(): number {
-    return this.seekOffset + (this.framesPlayed * FRAME_DURATION_MS) / 1000;
+  private duckingGainAt(at: number): number {
+    if (this.duckingRampDurationMs <= 0) return this.duckingTargetGain;
+
+    const progress = Math.max(
+      0,
+      Math.min(1, (at - this.duckingRampStartedAt) / this.duckingRampDurationMs),
+    );
+    return (
+      this.duckingRampStartGain +
+      (this.duckingTargetGain - this.duckingRampStartGain) * progress
+    );
   }
 
+  // NOTE: in external (Spotify sidecar) mode getElapsed() is frame-count based
+  // (framesPlayed includes silence frames emitted on underrun) and therefore
+  // only APPROXIMATE — the authoritative position is the controller's live
+  // status.track.position. This approximation is acceptable for Spotify.
+  getElapsed(): number { return this.seekOffset + (this.framesPlayed * FRAME_DURATION_MS) / 1000; }
   seek(seconds: number): void {
-    if (!this.currentUrl) return;
-    this.logger.info({ seek: seconds }, "Seeking");
-    this.play(this.currentUrl, seconds);
-  }
-
-  getSeekOffset(): number {
-    return this.seekOffset;
-  }
-
-  pause(): void {
-    if (this.state === "playing") {
-      this.state = "paused";
-      this.logger.debug("Playback paused");
+    // External (Spotify sidecar) mode: local seek is a no-op. Respawning ffmpeg
+    // on the spotify: sentinel would collide with the continuous PCM source;
+    // transport is delegated to the SpotifyController by the caller (Task 7).
+    if (this.externalMode) return;
+    if (this.currentUrl && Number.isFinite(seconds) && seconds >= 0) {
+      this.play(this.currentUrl, seconds, this.currentSongDuration);
     }
   }
+  pause(): void { if (this.state === "playing") this.state = "paused"; }
+  resume(): void { if (this.state === "paused") { this.state = "playing"; this.nextFrameTime = performance.now(); } }
+  resetFailures(): void { this.consecutiveFailures = 0; }
+  setVolume(vol: number): void { this.volume = Math.max(0, Math.min(100, vol)); }
+  getVolume(): number { return this.volume; }
+  /** Set the temporary voice-ducking gain (0=silent, 1=unchanged). */
+  setDuckingGain(gain: number, rampMs = 0): void {
+    if (!Number.isFinite(gain)) return;
 
-  resume(): void {
-    if (this.state === "paused") {
-      this.state = "playing";
-      this.nextFrameTime = performance.now();
-      this.logger.debug("Playback resumed");
-    }
-  }
+    const now = performance.now();
+    const currentGain = this.duckingGainAt(now);
+    const targetGain = Math.max(0, Math.min(1, gain));
+    const duration = Number.isFinite(rampMs) ? Math.max(0, rampMs) : 0;
 
-  stop(): void {
-    this.sessionId++;
-    this.frameLoopRunning = false;
-    if (this.ffmpeg) {
-      this.ffmpeg.kill("SIGTERM");
-      this.ffmpeg = null;
-    }
-    this.pcmBuffer = Buffer.alloc(0);
-    this.ffmpegPaused = false;
-    this.spawnFailed = false;
-    this.state = "idle";
-    this.currentUrl = "";
-    this.seekOffset = 0;
-    this.framesPlayed = 0;
-  }
-
-  /** Reset the consecutive failure counter (e.g. after user action) */
-  resetFailures(): void {
-    this.consecutiveFailures = 0;
-  }
-
-  setVolume(vol: number): void {
-    this.volume = Math.max(0, Math.min(100, vol));
-  }
-
-  getVolume(): number {
-    return this.volume;
-  }
-
-  getState(): PlayerState {
-    return this.state;
+    this.duckingRampStartGain = currentGain;
+    this.duckingTargetGain = targetGain;
+    this.duckingRampStartedAt = now;
+    this.duckingRampDurationMs =
+      duration > 0 && currentGain !== targetGain ? duration : 0;
   }
+  getDuckingGain(): number { return this.duckingGainAt(performance.now()); }
+  getState(): PlayerState { return this.state; }
+  // True only while attached to an external (Spotify sidecar) PCM stream. Used
+  // by the orchestrator to decide whether to re-attach: stop() detaches (sets
+  // externalMode=false) so this is false after any player.stop().
+  isExternalActive(): boolean { return this.externalMode; }
 }

src/audio/queue.test.ts

@@ -89,6 +89,49 @@ describe("PlayQueue", () => {
     expect(queue.list()[1].id).toBe("3");
   });
 
+  it("removing a song before current shifts current index", () => {
+    queue.setMode(PlayMode.Sequential);
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.add(makeSong("C"));
+    queue.playAt(2); // playing C at index 2
+    queue.remove(0); // remove A (before current)
+    expect(queue.current()?.id).toBe("C"); // still on C
+    expect(queue.getCurrentIndex()).toBe(1);
+  });
+
+  it("removing the currently-playing song lets next() advance to the shifted song", () => {
+    queue.setMode(PlayMode.Sequential);
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.add(makeSong("C"));
+    queue.add(makeSong("D"));
+    queue.playAt(2); // playing C
+    queue.remove(2); // remove C — D shifts into slot 2
+    // Before the fix this returned null (D was silently skipped)
+    expect(queue.next()?.id).toBe("D");
+  });
+
+  it("removing the only song clears the queue", () => {
+    queue.add(makeSong("only"));
+    queue.playAt(0);
+    queue.remove(0);
+    expect(queue.size()).toBe(0);
+    expect(queue.current()).toBeNull();
+    expect(queue.next()).toBeNull();
+  });
+
+  it("removing the last song while playing it advances to null in sequential mode", () => {
+    queue.setMode(PlayMode.Sequential);
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.playAt(1); // playing B (last)
+    queue.remove(1);
+    expect(queue.size()).toBe(1);
+    // currentIndex moved to 0, so next() should try to advance past the end
+    expect(queue.next()).toBeNull();
+  });
+
   it("clears all songs", () => {
     queue.add(makeSong("1"));
     queue.add(makeSong("2"));
@@ -107,6 +150,101 @@ describe("PlayQueue", () => {
     expect(next).not.toBeNull();
   });
 
+  it("random mode with single song returns null on next", () => {
+    queue.setMode(PlayMode.Random);
+    queue.add(makeSong("1"));
+    queue.play();
+    expect(queue.next()).toBeNull();
+  });
+
+  it("random mode plays each song exactly once then stops", () => {
+    queue.setMode(PlayMode.Random);
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.add(makeSong("C"));
+    queue.play();
+    const played = new Set<string>();
+    played.add(queue.current()!.id);
+    for (let i = 0; i < 3; i++) {
+      const song = queue.next();
+      if (!song) break;
+      played.add(song.id);
+    }
+    // All 3 songs should have been played
+    expect(played).toEqual(new Set(["A", "B", "C"]));
+    // next() after all played should return null
+    expect(queue.next()).toBeNull();
+  });
+
+  it("random mode: removing currently-playing song does not skip others", () => {
+    queue.setMode(PlayMode.Random);
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.add(makeSong("C"));
+    queue.add(makeSong("D"));
+    queue.play(); // plays A (index 0)
+    const second = queue.next()!; // plays some song
+    // Remove the currently-playing song
+    const curIdx = queue.getCurrentIndex();
+    queue.remove(curIdx);
+    // Remaining songs (excluding A and the removed song) should all be reachable
+    const played = new Set<string>();
+    played.add("A"); // already played via play()
+    played.add(second.id); // played and then removed
+    let song = queue.next();
+    while (song) {
+      played.add(song.id);
+      song = queue.next();
+    }
+    // All 4 original songs should have been played or accounted for
+    expect(played).toEqual(new Set(["A", "B", "C", "D"]));
+  });
+
+  it("random mode: prev does not cause duplicate plays", () => {
+    queue.setMode(PlayMode.Random);
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.add(makeSong("C"));
+    queue.play(); // plays A
+    queue.next(); // plays B or C
+    queue.prev(); // go back — this song is now marked as played
+    // Exhaust remaining songs
+    const ids: string[] = [];
+    let song = queue.next();
+    while (song) {
+      ids.push(song.id);
+      song = queue.next();
+    }
+    // No song ID should appear more than once across the entire session
+    expect(new Set(ids).size).toBe(ids.length);
+  });
+
+  it("random mode: adding song mid-playback includes the new song", () => {
+    queue.setMode(PlayMode.Random);
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.play(); // plays A
+    queue.next(); // plays B
+    // Add a new song while all existing songs have been played
+    queue.add(makeSong("C"));
+    const song = queue.next();
+    expect(song).not.toBeNull();
+    expect(song!.id).toBe("C");
+    // After C, should stop
+    expect(queue.next()).toBeNull();
+  });
+
+  it("random mode: setMode preserves current song as played", () => {
+    queue.add(makeSong("A"));
+    queue.add(makeSong("B"));
+    queue.play(); // plays A in sequential mode
+    queue.setMode(PlayMode.Random); // switch to random — A should be marked played
+    // next() should only return B, never A again
+    const song = queue.next();
+    expect(song?.id).toBe("B");
+    expect(queue.next()).toBeNull();
+  });
+
   it("random-loop mode never returns null", () => {
     queue.setMode(PlayMode.RandomLoop);
     queue.add(makeSong("1"));
@@ -123,4 +261,485 @@ describe("PlayQueue", () => {
     queue.playAt(2);
     expect(queue.current()?.id).toBe("3");
   });
+
+  describe("history-aware prev", () => {
+    it("walks back through played indices in random mode", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.add(makeSong("d"));
+      queue.add(makeSong("e"));
+
+      // Force a deterministic random sequence: a → c → e
+      queue.playAt(0);
+      queue.playAt(2);
+      queue.playAt(4);
+      expect(queue.current()?.id).toBe("e");
+
+      // prev pops back through history: e → c → a
+      expect(queue.prev()?.id).toBe("c");
+      expect(queue.prev()?.id).toBe("a");
+    });
+
+    it("returns null when history is empty in random mode", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.playAt(0);
+      // No further moves → history is empty (only 'a' is current, never pushed)
+      expect(queue.prev()).toBeNull();
+    });
+
+    it("preserves sequential prev when history is empty", () => {
+      queue.setMode(PlayMode.Sequential);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.play();
+      queue.next(); // currentIndex = 1
+      // Sequential next() pushed 0 to history → prev pops back to 0
+      expect(queue.prev()?.id).toBe("a");
+    });
+
+    it("clears history on play()", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.playAt(0);
+      queue.playAt(1);
+      queue.play(); // resets to index 0 and clears history
+      expect(queue.prev()).toBeNull();
+    });
+
+    it("clears history on clear()", () => {
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.play();
+      queue.next();
+      queue.clear();
+      queue.add(makeSong("c"));
+      queue.play();
+      // History was wiped — no prev path available beyond index 0
+      expect(queue.prev()).toBeNull();
+    });
+
+    it("clears history on setMode()", () => {
+      queue.setMode(PlayMode.Sequential);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.play();
+      queue.next();
+      // Mode change resets context
+      queue.setMode(PlayMode.Random);
+      expect(queue.prev()).toBeNull();
+    });
+
+    it("drops history entries pointing at a removed song", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.playAt(0);
+      queue.playAt(1); // history: [0]
+      queue.playAt(2); // history: [0, 1]
+      // Remove song at index 1 → history entry 1 dropped
+      queue.remove(1);
+      // queue is now [a, c], history should be [0]
+      // current was at 2 → after remove shifts to 1 → song "c"
+      expect(queue.current()?.id).toBe("c");
+      expect(queue.prev()?.id).toBe("a");
+    });
+
+    it("does not push to history on prev itself", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.playAt(0);
+      queue.playAt(1);
+      queue.playAt(2); // history: [0, 1]
+      queue.prev();    // pops 1, history: [0]
+      queue.prev();    // pops 0, history: []
+      expect(queue.prev()).toBeNull(); // no fallback target in random mode
+    });
+
+    it("caps history at HISTORY_LIMIT (50) entries, dropping oldest", () => {
+      queue.setMode(PlayMode.Random);
+      // Build a queue large enough to overflow HISTORY_LIMIT
+      for (let i = 0; i < 60; i++) queue.add(makeSong(`s${i}`));
+      // Walk through 60 explicit picks → 59 pushes to history
+      // (playAt pushes the previous currentIndex; first call has -1
+      // which pushHistory rejects). After 60 playAts, history holds
+      // the last 50 of those 59 entries.
+      for (let i = 0; i < 60; i++) queue.playAt(i);
+
+      // Walk back through history. The first prev returns whatever the
+      // 50th-most-recent push was (= index 9, since pushes 0..58 happened
+      // and the oldest 9 fell off). We can verify by counting prevs that
+      // succeed before history exhausts and prev returns null in random.
+      let count = 0;
+      while (queue.prev() !== null) {
+        count++;
+        if (count > 100) break; // safety
+      }
+      expect(count).toBe(50);
+    });
+  });
+
+  describe("addNext", () => {
+    it("appends when queue is empty (no current)", () => {
+      queue.addNext(makeSong("a"));
+      expect(queue.size()).toBe(1);
+      expect(queue.list()[0].id).toBe("a");
+    });
+
+    it("appends when nothing is currently playing (currentIndex < 0)", () => {
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      // No play() yet → currentIndex still -1
+      queue.addNext(makeSong("c"));
+      expect(queue.list().map((s) => s.id)).toEqual(["a", "b", "c"]);
+    });
+
+    it("inserts at currentIndex+1 mid-queue", () => {
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.add(makeSong("d"));
+      queue.play();      // current = 0 (a)
+      queue.next();      // current = 1 (b)
+      queue.addNext(makeSong("x"));
+      expect(queue.list().map((s) => s.id)).toEqual(["a", "b", "x", "c", "d"]);
+      expect(queue.current()?.id).toBe("b"); // current unchanged
+    });
+
+    it("makes the inserted song play next when next() is called", () => {
+      queue.setMode(PlayMode.Sequential);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.play();      // current = 0 (a)
+      queue.addNext(makeSong("x"));
+      expect(queue.next()?.id).toBe("x");
+    });
+
+    it("shifts playedIndices entries > currentIndex by +1", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.add(makeSong("d"));
+      queue.playAt(2); // current = 2 (c), played = {2}
+      queue.playAt(3); // current = 3 (d), played = {2, 3}
+      queue.playAt(2); // current = 2 (c), played = {2, 3}
+      // Now insert after c — d's index 3 should become 4
+      queue.addNext(makeSong("x"));
+      expect(queue.list().map((s) => s.id)).toEqual(["a", "b", "c", "x", "d"]);
+      // After addNext: currentIndex still 2; played should be {2, 4}
+      // (the previously-played 'd' is now at index 4)
+      // Verify by removing 'x' (index 3) — d should remain played at index 3
+      queue.remove(3);
+      expect(queue.list().map((s) => s.id)).toEqual(["a", "b", "c", "d"]);
+    });
+
+    it("shifts history entries > currentIndex by +1", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.add(makeSong("d"));
+      queue.playAt(0); // current = 0
+      queue.playAt(3); // current = 3 (d), history = [0]
+      queue.playAt(1); // current = 1 (b), history = [0, 3]
+      queue.addNext(makeSong("x"));
+      // Insert at index 2 → entries > 1 shift +1 → history becomes [0, 4]
+      // queue: [a, b, x, c, d]; d is now at index 4
+      // prev → pop 4 → song at index 4 = d
+      expect(queue.prev()?.id).toBe("d");
+      // prev again → pop 0 → song at index 0 = a
+      expect(queue.prev()?.id).toBe("a");
+    });
+
+    it("idle player + stale currentIndex: insertion target is currentIndex+1, not size-1", () => {
+      // Reproduces the scenario where the player has gone idle but the
+      // queue still has a non-negative currentIndex (e.g., after natural
+      // track end without queue.clear()).
+      queue.add(makeSong("a"));
+      queue.add(makeSong("b"));
+      queue.add(makeSong("c"));
+      queue.add(makeSong("d"));
+      queue.play();      // current = 0 (a)
+      queue.next();      // current = 1 (b)
+      // Simulate idle-with-stale-currentIndex: the player has gone idle
+      // but queue still points at b.
+      // Caller pre-captures insertedAt:
+      const insertedAt = queue.getCurrentIndex() + 1; // = 2
+      queue.addNext(makeSong("x"));
+      // queue is now [a, b, x, c, d]
+      // size-1 would be 4 (d) — WRONG.
+      // insertedAt is 2 (x) — RIGHT.
+      expect(queue.list().map((s) => s.id)).toEqual(["a", "b", "x", "c", "d"]);
+      expect(queue.size() - 1).toBe(4); // proves size-1 strategy would pick d
+      const promoted = queue.playAt(insertedAt);
+      expect(promoted?.id).toBe("x");
+    });
+  });
+
+  // Issue #70: 随机循环 (rloop) used true random-with-replacement, so some
+  // songs repeated often while others were starved. It should behave like a
+  // shuffle bag (NetEase/QQ style): play every song once per cycle in random
+  // order, then reshuffle and continue, avoiding an immediate cross-cycle repeat.
+  describe("random-loop shuffle bag (issue #70)", () => {
+    it("plays every song exactly once per cycle before repeating", () => {
+      queue.setMode(PlayMode.RandomLoop);
+      const N = 12;
+      for (let i = 0; i < N; i++) queue.add(makeSong(`s${i}`));
+      queue.play();
+
+      const cycle1 = [queue.current()!.id];
+      for (let i = 0; i < N - 1; i++) cycle1.push(queue.next()!.id);
+      const cycle2: string[] = [];
+      for (let i = 0; i < N; i++) cycle2.push(queue.next()!.id);
+
+      // Each cycle is a full permutation of all N songs — zero repeats within
+      // a cycle, and both cycles cover the same complete set.
+      expect(new Set(cycle1).size).toBe(N);
+      expect(new Set(cycle2).size).toBe(N);
+      expect(new Set(cycle1)).toEqual(new Set(cycle2));
+    });
+
+    it("distributes plays evenly across songs over many cycles (no starvation)", () => {
+      queue.setMode(PlayMode.RandomLoop);
+      const N = 6;
+      const CYCLES = 20;
+      for (let i = 0; i < N; i++) queue.add(makeSong(`s${i}`));
+      queue.play();
+
+      const counts = new Map<string, number>();
+      counts.set(queue.current()!.id, 1);
+      for (let i = 0; i < CYCLES * N - 1; i++) {
+        const id = queue.next()!.id;
+        counts.set(id, (counts.get(id) ?? 0) + 1);
+      }
+
+      // Shuffle bag => each song plays exactly CYCLES times. True random
+      // would skew heavily.
+      for (let i = 0; i < N; i++) {
+        expect(counts.get(`s${i}`)).toBe(CYCLES);
+      }
+    });
+
+    it("does not replay the same song across a cycle boundary", () => {
+      queue.setMode(PlayMode.RandomLoop);
+      const N = 5;
+      for (let i = 0; i < N; i++) queue.add(makeSong(`s${i}`));
+      queue.play();
+
+      // Walk to the last song of cycle 1, then cross into cycle 2.
+      for (let i = 0; i < N - 1; i++) queue.next();
+      const lastOfCycle1 = queue.current()!.id;
+      const firstOfCycle2 = queue.next()!.id;
+      expect(firstOfCycle2).not.toBe(lastOfCycle1);
+    });
+
+    it("includes a song added mid-cycle within the current cycle", () => {
+      queue.setMode(PlayMode.RandomLoop);
+      queue.add(makeSong("A"));
+      queue.add(makeSong("B"));
+      queue.play(); // A
+      queue.next(); // B — both originals now played this cycle
+      queue.add(makeSong("C")); // added mid-cycle, still unplayed
+      // C is the only unplayed song, so it must come next (not a reshuffle).
+      expect(queue.next()?.id).toBe("C");
+    });
+
+    it("keeps looping forever with multiple songs (never returns null)", () => {
+      queue.setMode(PlayMode.RandomLoop);
+      queue.add(makeSong("A"));
+      queue.add(makeSong("B"));
+      queue.add(makeSong("C"));
+      queue.play();
+      for (let i = 0; i < 30; i++) {
+        expect(queue.next()).not.toBeNull();
+      }
+    });
+  });
+
+  describe("snapshot / restore (#119)", () => {
+    it("round-trips songs, index, and mode; strips url", () => {
+      const q = new PlayQueue();
+      q.add(makeSong("A"));
+      q.add(makeSong("B"));
+      q.setMode(PlayMode.Loop);
+      q.play();
+      q.next(); // current = index 1
+      const snap = q.snapshot();
+      expect(snap.currentIndex).toBe(1);
+      expect(snap.mode).toBe(PlayMode.Loop);
+      expect((snap.songs[0] as QueuedSong).url).toBeUndefined();
+      expect(snap.songs.map((s) => s.id)).toEqual(["A", "B"]);
+
+      const q2 = new PlayQueue();
+      q2.restore(snap);
+      expect(q2.list().map((s) => s.id)).toEqual(["A", "B"]);
+      expect(q2.getCurrentIndex()).toBe(1);
+      expect(q2.getMode()).toBe(PlayMode.Loop);
+      expect(q2.current()?.id).toBe("B");
+    });
+
+    it("preserves requestedBy through a snapshot", () => {
+      const q = new PlayQueue();
+      q.add({ ...makeSong("A"), requestedBy: "alice" });
+      q.play();
+      const q2 = new PlayQueue();
+      q2.restore(q.snapshot());
+      expect(q2.current()?.requestedBy).toBe("alice");
+    });
+
+    it("degrades an out-of-range index to -1 (nothing current)", () => {
+      const q = new PlayQueue();
+      const { url: _url, ...noUrl } = makeSong("A");
+      q.restore({ songs: [noUrl], currentIndex: 5, mode: PlayMode.Sequential });
+      expect(q.getCurrentIndex()).toBe(-1);
+      expect(q.current()).toBeNull();
+      expect(q.list().map((s) => s.id)).toEqual(["A"]);
+    });
+  });
+
+  // Issue #141: in Random/RandomLoop, next() picks from the shuffle bag and
+  // ignores array order, so a song spliced in by addNext (!pn) was NOT played
+  // next — it just waited for its random turn like any other song. addNext now
+  // records the insert slot on the forward stack, which next() honours first.
+  describe("addNext in random modes (issue #141)", () => {
+    for (const mode of [PlayMode.Random, PlayMode.RandomLoop]) {
+      it(`plays the inserted song next in ${mode} mode`, () => {
+        queue.setMode(mode);
+        for (const id of ["a", "b", "c", "d"]) queue.add(makeSong(id));
+        queue.play(); // current = 0 (a)
+        queue.addNext(makeSong("x"));
+        expect(queue.next()?.id).toBe("x");
+      });
+    }
+
+    it("plays consecutive inserts in the order the queue displays them", () => {
+      queue.setMode(PlayMode.RandomLoop);
+      for (const id of ["a", "b", "c", "d"]) queue.add(makeSong(id));
+      queue.play(); // current = 0 (a)
+      queue.addNext(makeSong("x"));
+      queue.addNext(makeSong("y")); // splices in front of x, as in sequential
+      expect(queue.list().map((s) => s.id)).toEqual(["a", "y", "x", "b", "c", "d"]);
+      expect(queue.next()?.id).toBe("y");
+      expect(queue.next()?.id).toBe("x");
+    });
+
+    it("honours the insert even after the shuffle bag is exhausted", () => {
+      // Random (non-loop) returns null once every song has played. Songs added
+      // afterwards must still be reachable via !pn — and with TWO of them the
+      // order can only come from the forward stack, not from the bag having a
+      // single remaining candidate.
+      queue.setMode(PlayMode.Random);
+      for (const id of ["a", "b", "c", "d"]) queue.add(makeSong(id));
+      queue.play();
+      for (let i = 0; i < 3; i++) queue.next();
+      expect(queue.next()).toBeNull(); // bag exhausted
+      queue.addNext(makeSong("x"));
+      queue.addNext(makeSong("y"));
+      queue.addNext(makeSong("z"));
+      expect(queue.next()?.id).toBe("z");
+      expect(queue.next()?.id).toBe("y");
+      expect(queue.next()?.id).toBe("x");
+    });
+
+    it("pops past a prev() marker to reach the pending insert", () => {
+      // prev() shares the forward stack, and in random mode with no history it
+      // pushes the current index and then returns null. next() must walk past
+      // those self-referencing markers instead of consuming one and giving up
+      // to the shuffle bag.
+      queue.setMode(PlayMode.Random);
+      for (const id of ["a", "b", "c", "d"]) queue.add(makeSong(id));
+      queue.play(); // a
+      queue.addNext(makeSong("x"));
+      expect(queue.prev()).toBeNull();
+      expect(queue.prev()).toBeNull();
+      expect(queue.next()?.id).toBe("x");
+    });
+
+    it("plays each song exactly once — the insert is not replayed later", () => {
+      queue.setMode(PlayMode.Random);
+      for (const id of ["a", "b", "c", "d"]) queue.add(makeSong(id));
+      queue.play(); // a
+      queue.addNext(makeSong("x"));
+      queue.addNext(makeSong("y"));
+
+      const played = [queue.current()!.id];
+      for (let i = 0; i < 5; i++) played.push(queue.next()!.id);
+      expect(queue.next()).toBeNull(); // bag exhausted
+      expect(played.slice(0, 3)).toEqual(["a", "y", "x"]);
+      expect(new Set(played).size).toBe(6);
+    });
+
+    it("keeps the insert reachable after an earlier song is removed", () => {
+      queue.setMode(PlayMode.RandomLoop);
+      for (const id of ["a", "b", "c", "d"]) queue.add(makeSong(id));
+      queue.playAt(2); // current = 2 (c)
+      queue.addNext(makeSong("x")); // [a, b, c, x, d]
+      queue.remove(0); // [b, c, x, d] — x slides from 3 to 2
+      expect(queue.next()?.id).toBe("x");
+    });
+
+    it("drops the entry when the inserted song is itself removed", () => {
+      // Leaving the stale entry behind would not throw — index 2 still exists
+      // after the removal, it just points at a different song. So the queue is
+      // arranged with exactly one song the shuffle bag can legally return:
+      // anything else means the dead forward entry was honoured.
+      queue.setMode(PlayMode.RandomLoop);
+      for (const id of ["a", "b", "c"]) queue.add(makeSong(id));
+      queue.playAt(0); // current = 0 (a), played = {0}
+      queue.next(); // b or c — two of the three are now played
+      const remaining = queue.list().find((s) => s.id !== "a" && s.id !== queue.current()!.id)!;
+      queue.addNext(makeSong("x")); // spliced at currentIndex+1
+      queue.remove(queue.getCurrentIndex() + 1); // …and removed again
+      expect(queue.list().map((s) => s.id)).not.toContain("x");
+      expect(queue.next()?.id).toBe(remaining.id);
+    });
+
+    it("never yields a stale index under interleaved inserts and removals", () => {
+      // The forward stack holds array indices, so every splice has to shift
+      // them. next() returning `undefined` here (an out-of-range index) reads
+      // as end-of-queue to BotInstance.playNext and silently stops playback.
+      queue.setMode(PlayMode.RandomLoop);
+      for (let i = 0; i < 6; i++) queue.add(makeSong(`s${i}`));
+      queue.play();
+      for (let step = 0; step < 200; step++) {
+        const roll = step % 4;
+        if (roll === 0) queue.addNext(makeSong(`x${step}`));
+        else if (roll === 1 && queue.size() > 1) queue.remove(step % queue.size());
+        else {
+          const song = queue.next();
+          expect(song === null || song === queue.current()).toBe(true);
+          if (song !== null) expect(song).toBeDefined();
+        }
+      }
+    });
+
+    it("leaves sequential/loop behaviour untouched", () => {
+      queue.setMode(PlayMode.Sequential);
+      for (const id of ["a", "b", "c"]) queue.add(makeSong(id));
+      queue.play(); // a
+      queue.addNext(makeSong("x"));
+      expect(queue.next()?.id).toBe("x");
+      expect(queue.next()?.id).toBe("b");
+      expect(queue.next()?.id).toBe("c");
+      expect(queue.next()).toBeNull();
+    });
+
+    it("still appends (no forward entry) when nothing is playing", () => {
+      queue.setMode(PlayMode.Random);
+      queue.add(makeSong("a"));
+      queue.addNext(makeSong("x")); // currentIndex is still -1 → plain push
+      expect(queue.list().map((s) => s.id)).toEqual(["a", "x"]);
+      queue.play(); // a — a stray forward entry would have hijacked this
+      expect(queue.current()?.id).toBe("a");
+    });
+  });
 });

src/audio/queue.ts

@@ -10,16 +10,41 @@ export interface QueuedSong {
   name: string;
   artist: string;
   album: string;
-  platform: "netease" | "qq" | "bilibili";
+  platform: "netease" | "qq" | "bilibili" | "youtube" | "local" | "kugou" | "spotify" | "jellyfin";
   url?: string; // resolved lazily at play time
   coverUrl: string;
   duration: number; // seconds
+  requestedBy?: string;
+}
+
+/**
+ * A persistable view of a queue: its songs (minus the lazily-resolved `url`),
+ * the current index, and the play mode. Used to snapshot/restore the live queue
+ * across restarts (issue #119). Derived state (playedIndices/history/forward
+ * stack) is intentionally NOT captured — restore() rebuilds it consistently.
+ */
+export interface QueueSnapshot {
+  songs: Omit<QueuedSong, "url">[];
+  currentIndex: number;
+  mode: PlayMode;
 }
 
 export class PlayQueue {
   private songs: QueuedSong[] = [];
   private currentIndex = -1;
   private mode: PlayMode = PlayMode.Sequential;
+  private playedIndices = new Set<number>();
+  private history: number[] = [];
+  private forwardStack: number[] = [];
+  private static readonly HISTORY_LIMIT = 50;
+
+  private pushHistory(idx: number): void {
+    if (idx < 0 || idx >= this.songs.length) return;
+    this.history.push(idx);
+    if (this.history.length > PlayQueue.HISTORY_LIMIT) {
+      this.history.shift();
+    }
+  }
 
   add(song: QueuedSong): void {
     this.songs.push(song);
@@ -29,6 +54,55 @@ export class PlayQueue {
     this.songs.push(...songs);
   }
 
+  /**
+   * Insert a song to play immediately after the current one. Falls
+   * through to plain push when nothing is playing yet (currentIndex < 0
+   * or queue empty), so the existing "add → idle bot starts playing"
+   * flow continues to work.
+   *
+   * Shifts playedIndices, history and forwardStack entries > currentIndex
+   * by +1 so their references stay valid after the splice.
+   *
+   * In the random modes the array position alone means nothing — next()
+   * picks from the shuffle bag — so the insert slot is also recorded on
+   * the forward stack, which next() consults first (issue #141).
+   */
+  addNext(song: QueuedSong): void {
+    if (this.currentIndex < 0 || this.songs.length === 0) {
+      this.songs.push(song);
+      return;
+    }
+    const insertAt = this.currentIndex + 1;
+    this.songs.splice(insertAt, 0, song);
+
+    const shifted = new Set<number>();
+    for (const i of this.playedIndices) {
+      shifted.add(i > this.currentIndex ? i + 1 : i);
+    }
+    this.playedIndices = shifted;
+
+    this.history = this.history.map((i) =>
+      i > this.currentIndex ? i + 1 : i,
+    );
+
+    this.forwardStack = this.forwardStack.map((i) =>
+      i > this.currentIndex ? i + 1 : i,
+    );
+
+    // Push AFTER the shift, or the slot we just claimed would be shifted
+    // too. Stacking makes repeated !pn play in the order the queue shows
+    // them (each insert lands in front of the previous one), matching what
+    // sequential mode does with the same array. Bounded like history: drop the
+    // OLDEST pending entry rather than refusing the newest, so the song the
+    // user just asked for is always the one that gets honoured.
+    if (this.mode === PlayMode.Random || this.mode === PlayMode.RandomLoop) {
+      this.forwardStack.push(insertAt);
+      if (this.forwardStack.length > PlayQueue.HISTORY_LIMIT) {
+        this.forwardStack.shift();
+      }
+    }
+  }
+
   remove(index: number): QueuedSong | null {
     if (index < 0 || index >= this.songs.length) return null;
     const [removed] = this.songs.splice(index, 1);
@@ -36,28 +110,61 @@ export class PlayQueue {
     if (index < this.currentIndex) {
       this.currentIndex--;
     } else if (index === this.currentIndex) {
-      if (this.currentIndex >= this.songs.length) {
-        this.currentIndex = this.songs.length - 1;
-      }
+      this.currentIndex--;
     }
 
+    // Rebuild playedIndices to account for shifted indices
+    const newPlayed = new Set<number>();
+    for (const idx of this.playedIndices) {
+      if (idx === index) continue;
+      newPlayed.add(idx > index ? idx - 1 : idx);
+    }
+    this.playedIndices = newPlayed;
+
+    // Same shift logic for history — drop entries pointing at the
+    // removed song; shift entries > index down by 1.
+    this.history = this.history
+      .filter((idx) => idx !== index)
+      .map((idx) => (idx > index ? idx - 1 : idx));
+
+    // …and for the forward stack, which now also carries !pn insert slots
+    // (issue #141). Left unshifted, a removal elsewhere in the queue would
+    // silently repoint the entry at whatever song slid into that slot.
+    this.forwardStack = this.forwardStack
+      .filter((idx) => idx !== index)
+      .map((idx) => (idx > index ? idx - 1 : idx));
+
     return removed;
   }
 
   clear(): void {
     this.songs = [];
     this.currentIndex = -1;
+    this.playedIndices.clear();
+    this.history = [];
+    this.forwardStack = [];
   }
 
   play(): QueuedSong | null {
     if (this.songs.length === 0) return null;
+    this.playedIndices.clear();
+    this.history = [];
+    this.forwardStack = [];
     this.currentIndex = 0;
+    this.playedIndices.add(0);
     return this.songs[0];
   }
 
   playAt(index: number): QueuedSong | null {
     if (index < 0 || index >= this.songs.length) return null;
+    this.pushHistory(this.currentIndex);
+    // Reset the Random-mode "unplayed" pool — explicit picks restart
+    // shuffle from this point. History tracking is independent and
+    // unaffected by this clear.
+    this.playedIndices.clear();
+    this.forwardStack = [];
     this.currentIndex = index;
+    this.playedIndices.add(index);
     return this.songs[index];
   }
 
@@ -68,47 +175,108 @@ export class PlayQueue {
       case PlayMode.Sequential: {
         const nextIndex = this.currentIndex + 1;
         if (nextIndex >= this.songs.length) return null;
+        this.pushHistory(this.currentIndex);
         this.currentIndex = nextIndex;
         return this.songs[nextIndex];
       }
       case PlayMode.Loop: {
+        this.pushHistory(this.currentIndex);
         this.currentIndex = (this.currentIndex + 1) % this.songs.length;
         return this.songs[this.currentIndex];
       }
-      case PlayMode.Random: {
-        if (this.songs.length === 1) return this.songs[0];
-        let nextIndex: number;
-        do {
-          nextIndex = Math.floor(Math.random() * this.songs.length);
-        } while (nextIndex === this.currentIndex && this.songs.length > 1);
-        this.currentIndex = nextIndex;
-        return this.songs[nextIndex];
-      }
+      case PlayMode.Random:
       case PlayMode.RandomLoop: {
-        if (this.songs.length === 1) {
-          this.currentIndex = 0;
-          return this.songs[0];
+        // 优先回到前进栈记录的位置（prev 退回的歌，或 !pn 插入的歌）。
+        // Keep popping past entries that no longer point anywhere useful,
+        // the way prev() walks past stale history entries. Without the loop a
+        // prev() that pushed the current index would swallow the pending !pn
+        // entry behind it. The range check is belt-and-braces — addNext and
+        // remove keep the stack in sync — but an out-of-range index here would
+        // set currentIndex out of bounds and hand back `undefined`, which
+        // BotInstance.playNext reads as end-of-queue and stops playback.
+        while (this.forwardStack.length > 0) {
+          const target = this.forwardStack.pop()!;
+          if (target < 0 || target >= this.songs.length) continue;
+          if (target === this.currentIndex) continue;
+          this.pushHistory(this.currentIndex);
+          this.currentIndex = target;
+          this.playedIndices.add(target);
+          return this.songs[target];
         }
-        let idx: number;
-        do {
-          idx = Math.floor(Math.random() * this.songs.length);
-        } while (idx === this.currentIndex);
-        this.currentIndex = idx;
-        return this.songs[idx];
+
+        // Shuffle bag: pick uniformly from the songs not yet played this
+        // cycle, so every song plays once before any repeats (NetEase/QQ
+        // style). Songs added mid-cycle aren't in playedIndices, so they're
+        // naturally eligible within the current cycle.
+        const unplayed: number[] = [];
+        for (let i = 0; i < this.songs.length; i++) {
+          if (!this.playedIndices.has(i)) unplayed.push(i);
+        }
+
+        if (unplayed.length === 0) {
+          // Cycle complete.
+          if (this.mode === PlayMode.Random) return null; // 随机：播完即停
+          // 随机循环：reshuffle and keep going forever.
+          if (this.songs.length === 1) {
+            this.pushHistory(this.currentIndex);
+            this.currentIndex = 0;
+            this.playedIndices = new Set([0]);
+            return this.songs[0];
+          }
+          // Start a fresh cycle: every song is eligible again, but exclude
+          // the song that just played from THIS pick only, so it doesn't
+          // repeat back-to-back across the boundary. It stays eligible for
+          // the rest of the new cycle, so every song still plays exactly once.
+          this.playedIndices = new Set();
+          for (let i = 0; i < this.songs.length; i++) {
+            if (i !== this.currentIndex) unplayed.push(i);
+          }
+        }
+
+        const nextIndex =
+          unplayed[Math.floor(Math.random() * unplayed.length)];
+        this.pushHistory(this.currentIndex);
+        this.currentIndex = nextIndex;
+        this.playedIndices.add(nextIndex);
+        return this.songs[nextIndex];
       }
     }
   }
 
   prev(): QueuedSong | null {
     if (this.songs.length === 0) return null;
+
+    // 记录当前位置到前进栈，供 next 优先返回
+    if (this.currentIndex >= 0 && this.forwardStack.length < PlayQueue.HISTORY_LIMIT) {
+      this.forwardStack.push(this.currentIndex);
+    }
+
+    // Preferred: pop from the back-stack so prev means "the song I
+    // actually played before this one," not "the previous array slot."
+    while (this.history.length > 0) {
+      const idx = this.history.pop()!;
+      if (idx >= 0 && idx < this.songs.length) {
+        this.currentIndex = idx;
+        this.playedIndices = new Set([...this.history, this.currentIndex]);
+        return this.songs[idx];
+      }
+      // Stale entry (song removed) — keep popping.
+    }
+
+    // Fallback: no history to walk back through. In Sequential we
+    // can still meaningfully step the index backward; in random
+    // modes there's nothing useful to return.
+    if (this.mode === PlayMode.Random || this.mode === PlayMode.RandomLoop) {
+      return null;
+    }
     const prevIndex = this.currentIndex - 1;
     if (prevIndex < 0) {
-      // In Sequential mode, don't wrap around
       if (this.mode === PlayMode.Sequential) return null;
       this.currentIndex = this.songs.length - 1;
     } else {
       this.currentIndex = prevIndex;
     }
+    this.playedIndices.add(this.currentIndex);
     return this.songs[this.currentIndex];
   }
 
@@ -136,9 +304,48 @@ export class PlayQueue {
 
   setMode(mode: PlayMode): void {
     this.mode = mode;
+    this.playedIndices.clear();
+    this.history = [];
+    this.forwardStack = [];
+    if (this.currentIndex >= 0) {
+      this.playedIndices.add(this.currentIndex);
+    }
   }
 
   getCurrentIndex(): number {
     return this.currentIndex;
   }
+
+  /** Number of songs not yet played in Random mode. */
+  unplayedCount(): number {
+    return this.songs.length - this.playedIndices.size;
+  }
+
+  /**
+   * Capture the queue as a persistable snapshot (songs minus `url`, current
+   * index, mode). Songs keep their `requestedBy` so restored play-history
+   * attribution stays correct. See restore().
+   */
+  snapshot(): QueueSnapshot {
+    return {
+      songs: this.songs.map(({ url: _url, ...s }) => s),
+      currentIndex: this.currentIndex,
+      mode: this.mode,
+    };
+  }
+
+  /**
+   * Replace the queue contents from a snapshot. Rebuilds the derived
+   * playedIndices/history/forwardStack to a clean, consistent state for the
+   * restored index (an out-of-range index degrades to -1 = "nothing current").
+   */
+  restore(s: QueueSnapshot): void {
+    this.songs = s.songs.map((song) => ({ ...song }));
+    this.mode = s.mode;
+    this.currentIndex =
+      s.currentIndex >= 0 && s.currentIndex < this.songs.length ? s.currentIndex : -1;
+    this.playedIndices = new Set(this.currentIndex >= 0 ? [this.currentIndex] : []);
+    this.history = [];
+    this.forwardStack = [];
+  }
 }

src/bot/auto-pause.test.ts

@@ -0,0 +1,73 @@
+import { describe, it, expect } from "vitest";
+import {
+  decideOccupancyAction,
+  occupancyFromClientList,
+  shouldResumeOnReturn,
+} from "./auto-pause.js";
+
+describe("decideOccupancyAction", () => {
+  it("pauses when empty while playing and enabled", () => {
+    expect(decideOccupancyAction("playing", false, true, 0)).toBe("pause");
+  });
+  it("does not pause when the feature is disabled", () => {
+    expect(decideOccupancyAction("playing", false, false, 0)).toBe("none");
+  });
+  it("does not pause when idle (nothing playing)", () => {
+    expect(decideOccupancyAction("idle", false, true, 0)).toBe("none");
+  });
+  it("does not pause when already paused", () => {
+    expect(decideOccupancyAction("paused", false, true, 0)).toBe("none");
+  });
+  it("resumes when re-populated and we auto-paused", () => {
+    expect(decideOccupancyAction("paused", true, true, 2)).toBe("resume");
+  });
+  it("does NOT resume a user-paused track on re-population", () => {
+    expect(decideOccupancyAction("paused", false, true, 2)).toBe("none");
+  });
+  it("does nothing when re-populated and already playing", () => {
+    expect(decideOccupancyAction("playing", false, true, 2)).toBe("none");
+  });
+  it("resume is independent of the enabled flag (we already auto-paused)", () => {
+    expect(decideOccupancyAction("paused", true, false, 1)).toBe("resume");
+  });
+});
+
+describe("occupancyFromClientList", () => {
+  it("returns null when the query failed (0 clients — bot itself is always present)", () => {
+    // This is the bug fix: a clientlist timeout makes getClientsInChannel()
+    // return [], which must be treated as "unknown", NOT as an empty channel.
+    expect(occupancyFromClientList(0)).toBeNull();
+  });
+  it("returns 0 other users when only the bot is in the channel", () => {
+    expect(occupancyFromClientList(1)).toBe(0);
+  });
+  it("excludes the bot itself from the count", () => {
+    expect(occupancyFromClientList(2)).toBe(1);
+    expect(occupancyFromClientList(5)).toBe(4);
+  });
+  it("never yields a negative count (guards the -1 that caused false pauses)", () => {
+    expect(occupancyFromClientList(-3)).toBeNull();
+  });
+});
+
+describe("shouldResumeOnReturn (event-driven auto-resume)", () => {
+  it("resumes when we auto-paused and are still paused", () => {
+    // The reported gap: someone returns after an auto-pause. clientlist can't
+    // confirm it (it times out while they're present), so we resume from the
+    // clientEnter event alone.
+    expect(shouldResumeOnReturn(true, "paused")).toBe(true);
+  });
+  it("does NOT resume a track the user paused by hand", () => {
+    expect(shouldResumeOnReturn(false, "paused")).toBe(false);
+  });
+  it("does nothing if already playing (e.g. the bot's own enter at connect)", () => {
+    // autoPaused is cleared to false on connect, so the bot's own clientEnter
+    // is a no-op; this also covers the playing/auto-paused-flag-stale case.
+    expect(shouldResumeOnReturn(false, "playing")).toBe(false);
+    expect(shouldResumeOnReturn(true, "playing")).toBe(false);
+  });
+  it("does nothing when idle (nothing to resume)", () => {
+    expect(shouldResumeOnReturn(true, "idle")).toBe(false);
+    expect(shouldResumeOnReturn(false, "idle")).toBe(false);
+  });
+});

src/bot/auto-pause.ts

@@ -0,0 +1,67 @@
+export type PlayerStateName = "idle" | "playing" | "paused";
+export type OccupancyAction = "pause" | "resume" | "none";
+
+/**
+ * Convert a channel client-list length into the number of *other* users, or
+ * `null` when occupancy can't be determined.
+ *
+ * A connected bot is always a member of its own channel, so a valid query
+ * returns at least 1 (the bot itself). A length of 0 therefore does NOT mean
+ * "empty channel" — it means the underlying `clientlist` query failed (e.g. the
+ * full-client `clientlist` command times out when other clients are present,
+ * and `getClientsInChannel()` returns `[]` on error). Treating that failure as
+ * "empty" is what caused playback to auto-pause within seconds whenever a
+ * listener was actually in the channel. When the result is indeterminate we
+ * return `null` so callers skip the auto-pause/idle decision entirely rather
+ * than mis-reading an unknown state as empty.
+ */
+export function occupancyFromClientList(clientCount: number): number | null {
+  if (clientCount <= 0) return null; // query failed → occupancy unknown
+  return clientCount - 1; // exclude the bot itself
+}
+
+/**
+ * Decide what auto-pause should do given channel occupancy.
+ * - empty (userCount <= 0): pause iff enabled and currently playing.
+ * - re-populated (userCount > 0): resume iff we previously auto-paused and are still paused.
+ * `autoPaused` distinguishes our auto-pause from a user pause, so user pauses are never resumed.
+ */
+export function decideOccupancyAction(
+  playerState: PlayerStateName,
+  autoPaused: boolean,
+  enabled: boolean,
+  userCount: number,
+): OccupancyAction {
+  const empty = userCount <= 0;
+  if (empty) {
+    if (enabled && playerState === "playing") return "pause";
+    return "none";
+  }
+  if (autoPaused && playerState === "paused") return "resume";
+  return "none";
+}
+
+/**
+ * Whether a client-presence push event (a `clientEnter`) should trigger an
+ * auto-resume, WITHOUT consulting a clientlist query.
+ *
+ * Why event-driven: the full-client `clientlist`/`channellist` commands time
+ * out whenever ≥2 clients are connected to the server (a library limitation) —
+ * which is exactly the moment a listener returns. So occupancy cannot be
+ * re-queried to confirm the return; we must act on the push event itself.
+ * This is sound because the bot only ever auto-pauses while it is alone on the
+ * server (the sole state in which the occupancy query succeeds and pause
+ * fires). Therefore, while `autoPaused` is true, the only way occupancy can
+ * return is a fresh connection — delivered reliably as `clientEnter`.
+ *
+ * Gating on `autoPaused` (not merely "paused") guarantees we never revive a
+ * track the user paused by hand, and makes the bot's own `clientEnter` at
+ * connect a no-op (autoPaused is cleared to false on connect). This predicate
+ * NEVER pauses — pause stays on the authoritative clientlist path.
+ */
+export function shouldResumeOnReturn(
+  autoPaused: boolean,
+  playerState: PlayerStateName,
+): boolean {
+  return autoPaused && playerState === "paused";
+}

src/bot/commands.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { parseCommand } from "./commands.js";
+import { parseCommand, canRunCommand, isAdminCommand } from "./commands.js";
 
 describe("Command Parser", () => {
   it("parses simple command", () => {
@@ -60,3 +60,36 @@ describe("Command Parser", () => {
     expect(result!.args).toBe("3");
   });
 });
+
+describe("isAdminCommand classification", () => {
+  it("treats stop/clear/remove/move/vol/mode as admin", () => {
+    for (const c of ["stop", "clear", "remove", "move", "vol", "mode"]) {
+      expect(isAdminCommand(c)).toBe(true);
+    }
+  });
+  it("treats follow and play as NOT admin", () => {
+    expect(isAdminCommand("follow")).toBe(false);
+    expect(isAdminCommand("play")).toBe(false);
+  });
+});
+
+describe("canRunCommand", () => {
+  it("allows any public command regardless of groups", () => {
+    expect(canRunCommand("play", [], [6])).toBe(true);
+    expect(canRunCommand("follow", [], [6])).toBe(true);
+  });
+  it("allows admin command when enforcement is off (empty adminGroups)", () => {
+    expect(canRunCommand("stop", [], [])).toBe(true);
+  });
+  it("allows admin command when an invoker group matches (string vs number)", () => {
+    expect(canRunCommand("stop", ["6"], [6])).toBe(true);
+    expect(canRunCommand("stop", [6], [6])).toBe(true);
+    expect(canRunCommand("vol", ["8", "6"], [6])).toBe(true);
+  });
+  it("denies admin command when no invoker group matches", () => {
+    expect(canRunCommand("stop", ["8"], [6])).toBe(false);
+  });
+  it("denies admin command when invoker has no groups and enforcement is on", () => {
+    expect(canRunCommand("clear", [], [6])).toBe(false);
+  });
+});

src/bot/commands.ts

@@ -5,13 +5,13 @@ export interface ParsedCommand {
   flags: Set<string>;
 }
 
-export const PUBLIC_COMMANDS = new Set([
-  "play", "add", "queue", "list", "now", "lyrics", "vote", "help",
-  "playlist", "album", "fm", "prev", "next", "skip", "pause", "resume",
-]);
-
+/**
+ * The fixed set of "admin" chat commands. This is the SINGLE source of truth
+ * for which commands the permission gate restricts; reclassifying a command is
+ * a one-line edit here. Everything not in this set is public.
+ */
 export const ADMIN_COMMANDS = new Set([
-  "stop", "clear", "move", "vol", "mode", "follow", "remove",
+  "stop", "clear", "remove", "move", "vol", "mode",
 ]);
 
 export function parseCommand(
@@ -58,3 +58,24 @@ export function parseCommand(
 export function isAdminCommand(commandName: string): boolean {
   return ADMIN_COMMANDS.has(commandName);
 }
+
+/**
+ * Decide whether a chat command may run, given the invoker's TS server groups
+ * and the configured admin groups. Pure + synchronous so it is trivially unit
+ * tested and reused by the async gate in BotInstance.
+ *
+ * Allowed iff: (1) it is a public command, OR (2) enforcement is off
+ * (adminGroups empty), OR (3) some invoker group is in adminGroups.
+ * invokerGroups (strings from TS) and adminGroups (numbers) are normalized to
+ * strings before comparison so "6" matches 6.
+ */
+export function canRunCommand(
+  commandName: string,
+  invokerGroups: readonly (string | number)[],
+  adminGroups: readonly number[],
+): boolean {
+  if (!isAdminCommand(commandName)) return true;
+  if (adminGroups.length === 0) return true;
+  const admin = new Set(adminGroups.map((g) => String(g)));
+  return invokerGroups.some((g) => admin.has(String(g)));
+}

src/bot/managed-voice-clients.test.ts

@@ -0,0 +1,181 @@
+import { describe, expect, it } from "vitest";
+import {
+  ManagedVoiceClientRegistry,
+  normalizeManagedVoiceClientScope,
+  normalizeManagedVoiceHost,
+} from "./managed-voice-clients.js";
+
+describe("managed voice client scope normalization", () => {
+  it("normalizes DNS host casing, whitespace, and trailing root dots", () => {
+    expect(normalizeManagedVoiceHost("  Voice.Example.COM...  ")).toBe(
+      "voice.example.com",
+    );
+    expect(
+      normalizeManagedVoiceClientScope({
+        host: "VOICE.EXAMPLE.COM.",
+        voicePort: 9987,
+      }),
+    ).toEqual({ host: "voice.example.com", voicePort: 9987 });
+  });
+
+  it("treats bracketed and equivalent expanded IPv6 literals as one host", () => {
+    expect(normalizeManagedVoiceHost("[2001:0DB8:0:0:0:0:0:1]")).toBe(
+      "2001:db8::1",
+    );
+    expect(normalizeManagedVoiceHost("2001:db8::1")).toBe("2001:db8::1");
+  });
+
+  it("rejects empty hosts and invalid voice ports", () => {
+    expect(
+      normalizeManagedVoiceClientScope({ host: " . ", voicePort: 9987 }),
+    ).toBeNull();
+    expect(
+      normalizeManagedVoiceClientScope({ host: "example.com", voicePort: 0 }),
+    ).toBeNull();
+    expect(
+      normalizeManagedVoiceClientScope({
+        host: "example.com",
+        voicePort: 65_536,
+      }),
+    ).toBeNull();
+  });
+
+});
+
+describe("ManagedVoiceClientRegistry", () => {
+  it("finds clients through normalized forms of the same scope", () => {
+    const registry = new ManagedVoiceClientRegistry();
+    const owner = Symbol("connection");
+
+    expect(
+      registry.register(
+        { host: " Voice.Example.COM. ", voicePort: 9987 },
+        42,
+        owner,
+      ),
+    ).toBe(true);
+    expect(
+      registry.has({ host: "voice.example.com", voicePort: 9987 }, 42),
+    ).toBe(true);
+  });
+
+  it("keeps different voice ports and hosts in separate scopes", () => {
+    const registry = new ManagedVoiceClientRegistry();
+    registry.register(
+      { host: "voice.example.com", voicePort: 9987 },
+      7,
+      Symbol("connection"),
+    );
+
+    expect(
+      registry.has({ host: "voice.example.com", voicePort: 9988 }, 7),
+    ).toBe(false);
+    expect(
+      registry.has({ host: "other.example.com", voicePort: 9987 }, 7),
+    ).toBe(false);
+  });
+
+  it("finds a managed bot by stable client UID across network endpoints", () => {
+    const registry = new ManagedVoiceClientRegistry();
+    const owner = Symbol("connection");
+
+    registry.register(
+      { host: "127.0.0.1", voicePort: 9987 },
+      17,
+      owner,
+      "  managed-client-uid=  ",
+    );
+
+    expect(registry.hasClientUid("managed-client-uid=")).toBe(true);
+    expect(
+      registry.has({ host: "192.168.1.10", voicePort: 20_000 }, 17),
+    ).toBe(false);
+  });
+
+  it("keeps a shared managed UID until its last owner unregisters", () => {
+    const registry = new ManagedVoiceClientRegistry();
+    const scope = { host: "203.0.113.4", voicePort: 9987 };
+    const first = Symbol("first connection");
+    const second = Symbol("second connection");
+    registry.register(scope, 18, first, "shared-client-uid=");
+    registry.register(scope, 19, second, "shared-client-uid=");
+
+    expect(registry.unregister(scope, 18, first, "shared-client-uid=")).toBe(true);
+    expect(registry.hasClientUid("shared-client-uid=")).toBe(true);
+    expect(registry.unregister(scope, 19, second, "shared-client-uid=")).toBe(true);
+    expect(registry.hasClientUid("shared-client-uid=")).toBe(false);
+  });
+
+  it("ignores missing or empty client UIDs", () => {
+    const registry = new ManagedVoiceClientRegistry();
+    registry.register(
+      { host: "203.0.113.4", voicePort: 9987 },
+      19,
+      Symbol("connection"),
+      "   ",
+    );
+
+    expect(registry.hasClientUid(undefined)).toBe(false);
+    expect(registry.hasClientUid("   ")).toBe(false);
+  });
+
+  it("uses an IPv6-safe scope key", () => {
+    const registry = new ManagedVoiceClientRegistry();
+    registry.register(
+      { host: "[2001:0db8:0:0:0:0:0:1]", voicePort: 9987 },
+      9,
+      Symbol("connection"),
+    );
+
+    expect(
+      registry.has({ host: "2001:db8::1", voicePort: 9987 }, 9),
+    ).toBe(true);
+  });
+
+  it("does not let a delayed old disconnect remove a replacement", () => {
+    const registry = new ManagedVoiceClientRegistry();
+    const scope = { host: "voice.example.com", voicePort: 9987 };
+    const oldConnection = Symbol("old connection");
+    const newConnection = Symbol("new connection");
+
+    registry.register(scope, 12, oldConnection, "managed-client-uid=");
+    registry.register(scope, 12, newConnection, "managed-client-uid=");
+
+    // The old UID owner is removed, but the replacement still owns both the
+    // scoped id and the shared stable UID.
+    expect(
+      registry.unregister(scope, 12, oldConnection, "managed-client-uid="),
+    ).toBe(true);
+    expect(registry.has(scope, 12)).toBe(true);
+    expect(registry.hasClientUid("managed-client-uid=")).toBe(true);
+    expect(
+      registry.unregister(scope, 12, newConnection, "managed-client-uid="),
+    ).toBe(true);
+    expect(registry.has(scope, 12)).toBe(false);
+    expect(registry.hasClientUid("managed-client-uid=")).toBe(false);
+  });
+
+  it.each([0, -1, 1.5, Number.NaN, Number.POSITIVE_INFINITY])(
+    "ignores invalid client id %s",
+    (clientId) => {
+      const registry = new ManagedVoiceClientRegistry();
+      const scope = { host: "voice.example.com", voicePort: 9987 };
+      const owner = Symbol("connection");
+
+      expect(registry.register(scope, clientId, owner)).toBe(false);
+      expect(registry.has(scope, clientId)).toBe(false);
+      expect(registry.unregister(scope, clientId, owner)).toBe(false);
+    },
+  );
+
+  it("has no shared module-level state between registry instances", () => {
+    const first = new ManagedVoiceClientRegistry();
+    const second = new ManagedVoiceClientRegistry();
+    const scope = { host: "voice.example.com", voicePort: 9987 };
+
+    first.register(scope, 3, Symbol("connection"));
+
+    expect(first.has(scope, 3)).toBe(true);
+    expect(second.has(scope, 3)).toBe(false);
+  });
+});

src/bot/managed-voice-clients.ts

@@ -0,0 +1,187 @@
+import { isIP } from "node:net";
+
+/** Identifies one TeamSpeak voice server. */
+export interface ManagedVoiceClientScope {
+  host: string;
+  voicePort: number;
+}
+
+export interface NormalizedManagedVoiceClientScope {
+  readonly host: string;
+  readonly voicePort: number;
+}
+
+/**
+ * An opaque value identifying the connection that owns a client id.
+ *
+ * A fresh object or Symbol per connection is recommended. Value tokens are
+ * also supported for callers that already have a unique connection id.
+ */
+export type ManagedVoiceClientOwnerToken = object | string | number | symbol;
+
+/**
+ * Normalize a TeamSpeak host for comparisons.
+ *
+ * DNS names are case-insensitive and may include a trailing root dot. IPv6
+ * literals may be supplied either bare or in URL-style brackets; valid IPv6
+ * addresses are also put into the canonical form produced by the URL parser.
+ */
+export function normalizeManagedVoiceHost(host: string): string {
+  let normalized = host.trim().toLowerCase().replace(/\.+$/, "");
+
+  if (normalized.startsWith("[") && normalized.endsWith("]")) {
+    normalized = normalized.slice(1, -1);
+  }
+
+  if (isIP(normalized) === 6) {
+    // URL's host serializer compresses equivalent IPv6 spellings. `isIP`
+    // ensures interpolation cannot be interpreted as another URL component.
+    const serialized = new URL(`http://[${normalized}]/`).hostname;
+    return serialized.slice(1, -1);
+  }
+
+  return normalized;
+}
+
+/** Return a comparable scope, or null when the runtime input is unusable. */
+export function normalizeManagedVoiceClientScope(
+  scope: ManagedVoiceClientScope,
+): NormalizedManagedVoiceClientScope | null {
+  if (
+    !scope ||
+    typeof scope.host !== "string" ||
+    typeof scope.voicePort !== "number"
+  ) {
+    return null;
+  }
+
+  const host = normalizeManagedVoiceHost(scope.host);
+  if (
+    host.length === 0 ||
+    !Number.isInteger(scope.voicePort) ||
+    scope.voicePort < 1 ||
+    scope.voicePort > 65_535
+  ) {
+    return null;
+  }
+
+  return { host, voicePort: scope.voicePort };
+}
+
+function scopeKey(scope: ManagedVoiceClientScope): string | null {
+  const normalized = normalizeManagedVoiceClientScope(scope);
+  if (!normalized) return null;
+
+  // A serialized tuple stays unambiguous when host itself contains colons.
+  return JSON.stringify([normalized.host, normalized.voicePort]);
+}
+
+function validClientId(clientId: number): boolean {
+  return Number.isSafeInteger(clientId) && clientId > 0;
+}
+
+function normalizeClientUid(clientUid: string | undefined): string | null {
+  if (typeof clientUid !== "string") return null;
+  const normalized = clientUid.trim();
+  return normalized.length > 0 ? normalized : null;
+}
+
+/**
+ * Tracks voice client ids and stable TeamSpeak identities owned by bot
+ * connections in this process. The UID path survives DNS aliases, NAT,
+ * multiple NICs, and dual-stack endpoints; scoped ids remain a fallback when
+ * a sender has not yet appeared in the receiving client's view cache.
+ *
+ * This class intentionally has no module-level singleton. BotManager owns one
+ * instance and injects it into its BotInstances so separate managers remain
+ * isolated in tests and in the same process.
+ */
+export class ManagedVoiceClientRegistry {
+  private readonly clientsByScope = new Map<
+    string,
+    Map<number, ManagedVoiceClientOwnerToken>
+  >();
+  private readonly ownersByClientUid = new Map<
+    string,
+    Set<ManagedVoiceClientOwnerToken>
+  >();
+
+  /**
+   * Register (or replace) the connection that owns a client id and, when
+   * available, add its stable UID to the managed set.
+   * Returns false when the scope or client id is invalid.
+   */
+  register(
+    scope: ManagedVoiceClientScope,
+    clientId: number,
+    ownerToken: ManagedVoiceClientOwnerToken,
+    clientUid?: string,
+  ): boolean {
+    const key = scopeKey(scope);
+    if (!key || !validClientId(clientId)) return false;
+
+    let clients = this.clientsByScope.get(key);
+    if (!clients) {
+      clients = new Map();
+      this.clientsByScope.set(key, clients);
+    }
+    clients.set(clientId, ownerToken);
+
+    const normalizedUid = normalizeClientUid(clientUid);
+    if (normalizedUid) {
+      let owners = this.ownersByClientUid.get(normalizedUid);
+      if (!owners) {
+        owners = new Set();
+        this.ownersByClientUid.set(normalizedUid, owners);
+      }
+      owners.add(ownerToken);
+    }
+    return true;
+  }
+
+  /**
+   * Remove a client only if it is still owned by this connection.
+   *
+   * The ownership check prevents a delayed disconnect from an old connection
+   * deleting a newer connection that reused the same TeamSpeak client id.
+   */
+  unregister(
+    scope: ManagedVoiceClientScope,
+    clientId: number,
+    ownerToken: ManagedVoiceClientOwnerToken,
+    clientUid?: string,
+  ): boolean {
+    const key = scopeKey(scope);
+    if (!key || !validClientId(clientId)) return false;
+
+    let removed = false;
+    const clients = this.clientsByScope.get(key);
+    if (clients?.get(clientId) === ownerToken) {
+      clients.delete(clientId);
+      if (clients.size === 0) this.clientsByScope.delete(key);
+      removed = true;
+    }
+
+    const normalizedUid = normalizeClientUid(clientUid);
+    if (normalizedUid) {
+      const owners = this.ownersByClientUid.get(normalizedUid);
+      if (owners?.delete(ownerToken)) removed = true;
+      if (owners?.size === 0) this.ownersByClientUid.delete(normalizedUid);
+    }
+    return removed;
+  }
+
+  has(scope: ManagedVoiceClientScope, clientId: number): boolean {
+    const key = scopeKey(scope);
+    if (!key || !validClientId(clientId)) return false;
+    return this.clientsByScope.get(key)?.has(clientId) ?? false;
+  }
+
+  /** TeamSpeak client UIDs are stable across endpoint aliases and NAT paths. */
+  hasClientUid(clientUid: string | undefined): boolean {
+    const normalizedUid = normalizeClientUid(clientUid);
+    return normalizedUid
+      ? (this.ownersByClientUid.get(normalizedUid)?.size ?? 0) > 0
+      : false;
+  }
+}

src/bot/manager.test.ts

@@ -0,0 +1,153 @@
+import { describe, it, expect, afterEach } from "vitest";
+import { join } from "node:path";
+import { mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { BotManager } from "./manager.js";
+import { createDatabase, type BotDatabase } from "../data/database.js";
+import { createPermissionStore } from "../data/permissions.js";
+import { getDefaultConfig, loadConfig, saveConfig, type BotConfig } from "../data/config.js";
+import type { Logger } from "../logger.js";
+import type { MusicProvider } from "../music/provider.js";
+import type { AvatarStore } from "../data/avatars.js";
+import type { SpotifyOAuth } from "../music/spotify/spotify-oauth.js";
+
+// removeBot only calls logger.info; provide the full shape it could touch.
+const stubLogger = {
+  info() {},
+  warn() {},
+  error() {},
+  debug() {},
+  child() {
+    return stubLogger;
+  },
+} as unknown as Logger;
+
+describe("BotManager.removeBot — guest scope pruning", () => {
+  const dirs: string[] = [];
+  let db: BotDatabase;
+
+  function makeTmpConfigPath(): string {
+    const dir = mkdtempSync(join(tmpdir(), "tsmusicbot-manager-test-"));
+    dirs.push(dir);
+    return join(dir, "config.json");
+  }
+
+  function makeManager(config: BotConfig, configPath: string): BotManager {
+    db = createDatabase(":memory:");
+    const permissions = createPermissionStore(db.db);
+    saveConfig(configPath, config);
+    return new BotManager(
+      {} as unknown as MusicProvider,
+      {} as unknown as MusicProvider,
+      {} as unknown as MusicProvider,
+      db,
+      config,
+      stubLogger,
+      {} as unknown as AvatarStore,
+      permissions,
+      configPath
+    );
+  }
+
+  afterEach(() => {
+    try {
+      db?.close();
+    } catch {
+      /* ignore */
+    }
+    for (const d of dirs) {
+      rmSync(d, { recursive: true, force: true });
+    }
+    dirs.length = 0;
+  });
+
+  it("prunes a deleted bot from guestMode.bots (array) and persists", async () => {
+    const configPath = makeTmpConfigPath();
+    const config = getDefaultConfig();
+    config.guestMode.bots = ["botA", "botB"];
+    const manager = makeManager(config, configPath);
+
+    await manager.removeBot("botA");
+
+    expect(config.guestMode.bots).toEqual(["botB"]);
+    // Persisted file must also reflect the prune.
+    expect(loadConfig(configPath).guestMode.bots).toEqual(["botB"]);
+  });
+
+  it('leaves guestMode.bots === "all" unchanged (no crash, no change)', async () => {
+    const configPath = makeTmpConfigPath();
+    const config = getDefaultConfig();
+    config.guestMode.bots = "all";
+    const manager = makeManager(config, configPath);
+
+    await manager.removeBot("botA");
+
+    expect(config.guestMode.bots).toBe("all");
+    expect(loadConfig(configPath).guestMode.bots).toBe("all");
+  });
+});
+
+// --- Spotify OAuth threading (Task 6, C3.1) --------------------------------
+// The single process-wide SpotifyOAuth built in index.ts must reach every bot's
+// SpotifyController: index -> BotManager (trailing positional arg) -> BotInstance
+// -> controller. createBot() builds a REAL (side-effect-free) SpotifyController,
+// so we assert the shared instance surfaces via the controller's getOAuth().
+describe("BotManager — spotifyOAuth threading to bot controllers (C3.1)", () => {
+  const dirs: string[] = [];
+  let db: BotDatabase | undefined;
+
+  afterEach(() => {
+    try {
+      db?.close();
+    } catch {
+      /* ignore */
+    }
+    db = undefined;
+    for (const d of dirs) {
+      rmSync(d, { recursive: true, force: true });
+    }
+    dirs.length = 0;
+  });
+
+  it("forwards its shared SpotifyOAuth into a created bot's controller", async () => {
+    const dir = mkdtempSync(join(tmpdir(), "tsmusicbot-oauth-thread-"));
+    dirs.push(dir);
+    const configPath = join(dir, "config.json");
+    const config = getDefaultConfig();
+    saveConfig(configPath, config);
+    db = createDatabase(":memory:");
+    const permissions = createPermissionStore(db.db);
+    const provider = {} as unknown as MusicProvider;
+    const sentinel = {} as unknown as SpotifyOAuth;
+
+    const manager = new BotManager(
+      provider,
+      provider,
+      provider,
+      db,
+      config,
+      stubLogger,
+      {} as unknown as AvatarStore,
+      permissions,
+      configPath,
+      undefined, // localProvider
+      undefined, // kugouProvider
+      undefined, // spotifyProvider
+      join(dir, "spotify"), // spotifyDataDir
+      sentinel, // spotifyOAuth (the single shared instance)
+    );
+
+    const bot = await manager.createBot({
+      name: "b1",
+      serverAddress: "localhost",
+      serverPort: 9987,
+      nickname: "b1",
+    });
+
+    // Full chain observed: the manager's single shared instance is the exact
+    // one the per-bot controller now owns (getOAuth() returns it unchanged).
+    expect(bot.getSpotifyController().getOAuth()).toBe(sentinel);
+
+    bot.disconnect();
+  });
+});

src/bot/manager.ts

@@ -1,13 +1,58 @@
 import crypto from "node:crypto";
+import { EventEmitter } from "node:events";
+import path from "node:path";
 import {
   BotInstance,
   type BotInstanceOptions,
 } from "./instance.js";
 import type { MusicProvider } from "../music/provider.js";
+import { YouTubeProvider } from "../music/youtube.js";
 import type { BotDatabase } from "../data/database.js";
-import type { BotConfig } from "../data/config.js";
+import { saveConfig, type BotConfig } from "../data/config.js";
 import type { Logger } from "../logger.js";
 
+import type { ServerProtocol } from "../ts-protocol/client.js";
+import type { AvatarStore } from "../data/avatars.js";
+import type { PermissionStore } from "../data/permissions.js";
+import type { SpotifyOAuth } from "../music/spotify/spotify-oauth.js";
+import { ManagedVoiceClientRegistry } from "./managed-voice-clients.js";
+
+/**
+ * Run bot.connect() with a hard deadline. If the handshake hangs (e.g. the
+ * server silently drops the connection after initivexpand2), we tear the
+ * instance down instead of waiting for the library's 60s idle timeout, so
+ * the HTTP /start call returns promptly and the UI doesn't lock up.
+ */
+async function connectWithTimeout(
+  bot: BotInstance,
+  ms: number,
+  logger: Logger
+): Promise<void> {
+  let timer: ReturnType<typeof setTimeout> | undefined;
+  const timeout = new Promise<never>((_, reject) => {
+    timer = setTimeout(
+      () => reject(new Error(`connect timeout after ${ms}ms`)),
+      ms
+    );
+  });
+  try {
+    await Promise.race([bot.connect(), timeout]);
+  } catch (err) {
+    logger.warn(
+      { err, botId: bot.id },
+      "Connect failed or timed out — tearing down instance"
+    );
+    try {
+      bot.disconnect();
+    } catch {
+      // ignore teardown errors
+    }
+    throw err;
+  } finally {
+    if (timer) clearTimeout(timer);
+  }
+}
+
 export interface CreateBotParams {
   name: string;
   serverAddress: string;
@@ -15,18 +60,36 @@ export interface CreateBotParams {
   queryPort?: number;
   nickname: string;
   defaultChannel?: string;
+  channelId?: string;
   channelPassword?: string;
   autoStart?: boolean;
+  /** Force TS3 or TS6 protocol; omit or "unknown" for auto-detect. */
+  serverProtocol?: ServerProtocol;
+  /** API key for TS6 HTTP Query (port 10080/10443). */
+  ts6ApiKey?: string;
+  /** Password required to join the TS server. */
+  serverPassword?: string;
 }
 
-export class BotManager {
+export class BotManager extends EventEmitter {
   private bots = new Map<string, BotInstance>();
+  private readonly managedVoiceClients = new ManagedVoiceClientRegistry();
   private neteaseProvider: MusicProvider;
   private qqProvider: MusicProvider;
   private bilibiliProvider: MusicProvider;
+  private youtubeProvider: MusicProvider;
+  private localProvider: MusicProvider;
+  private kugouProvider: MusicProvider;
+  private spotifyProvider: MusicProvider;
+  private jellyfinProvider: MusicProvider;
+  private spotifyDataDir: string;
+  private readonly spotifyOAuth?: SpotifyOAuth;
   private database: BotDatabase;
   private config: BotConfig;
   private logger: Logger;
+  private avatarStore: AvatarStore;
+  private permissions: PermissionStore;
+  private configPath: string;
 
   constructor(
     neteaseProvider: MusicProvider,
@@ -34,14 +97,40 @@ export class BotManager {
     bilibiliProvider: MusicProvider,
     database: BotDatabase,
     config: BotConfig,
-    logger: Logger
+    logger: Logger,
+    avatarStore: AvatarStore,
+    permissions: PermissionStore,
+    configPath: string,
+    localProvider?: MusicProvider,
+    kugouProvider?: MusicProvider,
+    spotifyProvider?: MusicProvider,
+    spotifyDataDir?: string,
+    spotifyOAuth?: SpotifyOAuth,
+    jellyfinProvider?: MusicProvider
   ) {
+    super();
     this.neteaseProvider = neteaseProvider;
     this.qqProvider = qqProvider;
     this.bilibiliProvider = bilibiliProvider;
+    this.youtubeProvider = new YouTubeProvider();
+    this.localProvider = localProvider ?? neteaseProvider;
+    this.kugouProvider = kugouProvider ?? neteaseProvider;
+    this.spotifyProvider = spotifyProvider ?? neteaseProvider;
+    this.jellyfinProvider = jellyfinProvider ?? neteaseProvider;
+    this.spotifyDataDir = spotifyDataDir ?? path.join(process.cwd(), "data", "spotify");
+    this.spotifyOAuth = spotifyOAuth;
+    // Let the local provider see which uploads are still referenced by any
+    // bot's queue, so it never deletes a file another queue/bot still needs.
+    const referenceable = this.localProvider as Partial<{
+      setInUseResolver: (resolver: () => Set<string>) => void;
+    }>;
+    referenceable.setInUseResolver?.(() => this.getReferencedLocalSongIds());
     this.database = database;
     this.config = config;
     this.logger = logger;
+    this.avatarStore = avatarStore;
+    this.permissions = permissions;
+    this.configPath = configPath;
   }
 
   async createBot(params: CreateBotParams): Promise<BotInstance> {
@@ -56,17 +145,31 @@ export class BotManager {
         queryPort: params.queryPort ?? 10011,
         nickname: params.nickname,
         defaultChannel: params.defaultChannel,
+        channelId: params.channelId,
         channelPassword: params.channelPassword,
+        serverPassword: params.serverPassword,
+        serverProtocol: params.serverProtocol,
+        ts6ApiKey: params.ts6ApiKey,
       },
       neteaseProvider: this.neteaseProvider,
       qqProvider: this.qqProvider,
       bilibiliProvider: this.bilibiliProvider,
+      youtubeProvider: this.youtubeProvider,
+      localProvider: this.localProvider,
+      kugouProvider: this.kugouProvider,
+      spotifyProvider: this.spotifyProvider,
+      jellyfinProvider: this.jellyfinProvider,
       database: this.database,
       config: this.config,
       logger: this.logger,
+      avatarStore: this.avatarStore,
+      managedVoiceClients: this.managedVoiceClients,
+      spotifyDataDir: this.spotifyDataDir,
+      spotifyOAuth: this.spotifyOAuth,
     });
 
     this.bots.set(id, bot);
+    this.emit("botInstance", bot);
 
     this.database.saveBotInstance({
       id,
@@ -75,8 +178,12 @@ export class BotManager {
       serverPort: params.serverPort,
       nickname: params.nickname,
       defaultChannel: params.defaultChannel ?? "",
+      channelId: params.channelId ?? "",
       channelPassword: params.channelPassword ?? "",
       autoStart: params.autoStart ?? false,
+      serverProtocol: params.serverProtocol ?? "",
+      ts6ApiKey: params.ts6ApiKey ?? "",
+      serverPassword: params.serverPassword ?? "",
     });
 
     this.logger.info({ botId: id, name: params.name }, "Bot instance created");
@@ -90,6 +197,13 @@ export class BotManager {
       this.bots.delete(id);
     }
     this.database.deleteBotInstance(id);
+    this.permissions.pruneBot(id);
+    // Prune the deleted bot from the guest scope allow-list (mirrors permissions.pruneBot).
+    if (Array.isArray(this.config.guestMode.bots) && this.config.guestMode.bots.includes(id)) {
+      this.config.guestMode.bots = this.config.guestMode.bots.filter((b) => b !== id);
+      saveConfig(this.configPath, this.config);
+    }
+    this.emit("botInstanceRemoved", id);
     this.logger.info({ botId: id }, "Bot instance removed");
   }
 
@@ -105,7 +219,11 @@ export class BotManager {
       serverPort: params.serverPort ?? existing.serverPort,
       nickname: params.nickname ?? existing.nickname,
       defaultChannel: params.defaultChannel ?? existing.defaultChannel,
+      channelId: params.channelId ?? existing.channelId,
       channelPassword: params.channelPassword ?? existing.channelPassword,
+      serverProtocol: params.serverProtocol ?? existing.serverProtocol,
+      ts6ApiKey: params.ts6ApiKey ?? existing.ts6ApiKey,
+      serverPassword: params.serverPassword ?? existing.serverPassword,
     });
     // Update in-memory name immediately (other fields need reconnect)
     const bot = this.bots.get(id);
@@ -127,16 +245,81 @@ export class BotManager {
     return Array.from(this.bots.values());
   }
 
-  async startBot(id: string): Promise<void> {
-    const bot = this.bots.get(id);
-    if (!bot) throw new Error(`Bot ${id} not found`);
-    await bot.connect();
+  /** Local upload ids still referenced by any bot's queue. The local provider
+   *  uses this to avoid deleting a file another queue/bot is still using. */
+  getReferencedLocalSongIds(): Set<string> {
+    const ids = new Set<string>();
+    for (const bot of this.bots.values()) {
+      for (const song of bot.getQueueManager().list()) {
+        if (song.platform === "local") ids.add(song.id);
+      }
+    }
+    return ids;
+  }
 
-    // Mark as autoStart so it reconnects on Docker restart, and persist identity
+  async startBot(id: string): Promise<void> {
+    const oldBot = this.bots.get(id);
+    if (!oldBot) throw new Error(`Bot ${id} not found`);
+
+    // Always tear down the outgoing instance before creating a replacement.
+    // Covers three cases:
+    //   1. oldBot is fully connected (manual restart)
+    //   2. oldBot is mid-handshake from a prior rapid start (isConnected()
+    //      still returns false but the library client is live and will leak
+    //      a TS session if we abandon it)
+    //   3. oldBot was just created by createBot but never connected — the
+    //      disconnect call is a cheap no-op here.
+    // Calling disconnect() is idempotent (disconnectEmitted guards event
+    // emission), so this is safe in all states.
+    oldBot.disconnect();
+
+    // Reload config from database so updated settings (channel, nickname, etc.) take effect
     const saved = this.database.getBotInstances().find((i) => i.id === id);
     if (saved) {
+      const proto = saved.serverProtocol as "ts3" | "ts6" | "" | undefined;
+      const bot = new BotInstance({
+        id: saved.id,
+        name: saved.name,
+        tsOptions: {
+          host: saved.serverAddress,
+          port: saved.serverPort,
+          queryPort: proto === "ts6" ? 10080 : 10011,
+          nickname: saved.nickname,
+          // Reuse the stored identity so server groups assigned to this bot
+          // survive restarts — without this the TS server sees a new UID
+          // each connect and strips all previously granted groups.
+          identity: saved.identity || undefined,
+          defaultChannel: saved.defaultChannel || undefined,
+          channelId: saved.channelId || undefined,
+          channelPassword: saved.channelPassword || undefined,
+          serverPassword: saved.serverPassword || undefined,
+          serverProtocol: proto === "ts3" || proto === "ts6" ? proto : undefined,
+          ts6ApiKey: saved.ts6ApiKey || undefined,
+        },
+        neteaseProvider: this.neteaseProvider,
+        qqProvider: this.qqProvider,
+        bilibiliProvider: this.bilibiliProvider,
+        youtubeProvider: this.youtubeProvider,
+        localProvider: this.localProvider,
+        kugouProvider: this.kugouProvider,
+        spotifyProvider: this.spotifyProvider,
+        jellyfinProvider: this.jellyfinProvider,
+        database: this.database,
+        config: this.config,
+        logger: this.logger,
+        avatarStore: this.avatarStore,
+        managedVoiceClients: this.managedVoiceClients,
+        spotifyDataDir: this.spotifyDataDir,
+        spotifyOAuth: this.spotifyOAuth,
+      });
+      this.bots.set(id, bot);
+      this.emit("botInstance", bot);
+      await connectWithTimeout(bot, 15_000, this.logger);
+      // Mark as autoStart so it reconnects on Docker restart, and persist identity
       this.database.saveBotInstance({ ...saved, autoStart: true });
       this.persistBotIdentity(saved, bot);
+    } else {
+      await connectWithTimeout(oldBot, 15_000, this.logger);
     }
   }
 
@@ -155,27 +338,42 @@ export class BotManager {
   async loadSavedBots(): Promise<void> {
     const savedInstances = this.database.getBotInstances();
     for (const saved of savedInstances) {
+      const proto = saved.serverProtocol as "ts3" | "ts6" | "" | undefined;
       const bot = new BotInstance({
         id: saved.id,
         name: saved.name,
         tsOptions: {
           host: saved.serverAddress,
           port: saved.serverPort,
-          queryPort: 10011,
+          queryPort: proto === "ts6" ? 10080 : 10011,
           nickname: saved.nickname,
           identity: saved.identity || undefined,
           defaultChannel: saved.defaultChannel || undefined,
+          channelId: saved.channelId || undefined,
           channelPassword: saved.channelPassword || undefined,
+          serverPassword: saved.serverPassword || undefined,
+          serverProtocol: proto === "ts3" || proto === "ts6" ? proto : undefined,
+          ts6ApiKey: saved.ts6ApiKey || undefined,
         },
         neteaseProvider: this.neteaseProvider,
         qqProvider: this.qqProvider,
         bilibiliProvider: this.bilibiliProvider,
+        youtubeProvider: this.youtubeProvider,
+        localProvider: this.localProvider,
+        kugouProvider: this.kugouProvider,
+        spotifyProvider: this.spotifyProvider,
+        jellyfinProvider: this.jellyfinProvider,
         database: this.database,
         config: this.config,
         logger: this.logger,
+        avatarStore: this.avatarStore,
+        managedVoiceClients: this.managedVoiceClients,
+        spotifyDataDir: this.spotifyDataDir,
+        spotifyOAuth: this.spotifyOAuth,
       });
 
       this.bots.set(saved.id, bot);
+      this.emit("botInstance", bot);
 
       // Only auto-connect bots that have autoStart enabled
       if (saved.autoStart) {

src/bot/profile.test.ts

@@ -0,0 +1,204 @@
+import { describe, it, expect, beforeEach, vi } from "vitest";
+import { BotProfileManager } from "./profile.js";
+import type { TS3Client } from "../ts-protocol/client.js";
+import type { QueuedSong } from "../audio/queue.js";
+
+function makeMockTs(): TS3Client & {
+  uploadCalls: Buffer[];
+  clearCalls: number;
+} {
+  const calls: Buffer[] = [];
+  let clears = 0;
+  const ts: any = {
+    uploadCalls: calls,
+    get clearCalls() { return clears; },
+    getHost: () => "127.0.0.1",
+    getHttpQuery: () => null,
+    fileTransferInitUpload: vi.fn().mockResolvedValue({}),
+    uploadFileData: vi.fn().mockImplementation(async (_h: any, _i: any, stream: any) => {
+      const chunks: Buffer[] = [];
+      for await (const c of stream) chunks.push(c as Buffer);
+      calls.push(Buffer.concat(chunks));
+    }),
+    fileTransferDeleteFile: vi.fn().mockResolvedValue(undefined),
+    sendCommandNoWait: vi.fn().mockImplementation(async (cmd: string) => {
+      if (/client_flag_avatar=$/.test(cmd)) clears++;
+    }),
+  };
+  return ts;
+}
+
+const noopLogger: any = { child: () => noopLogger, info: () => {}, debug: () => {}, warn: () => {}, error: () => {} };
+
+const cfgOn = { avatarEnabled: true, descriptionEnabled: false, nicknameEnabled: false, awayStatusEnabled: false, channelDescEnabled: false, nowPlayingMsgEnabled: false };
+const cfgOff = { ...cfgOn, avatarEnabled: false };
+
+const fakeSong: QueuedSong = {
+  id: "1",
+  name: "X",
+  artist: "Y",
+  album: "Z",
+  platform: "netease",
+  url: "u",
+  coverUrl: "c",
+  duration: 100,
+};
+
+const flush = () => new Promise((r) => setImmediate(r));
+
+describe("BotProfileManager custom avatar precedence", () => {
+  let ts: ReturnType<typeof makeMockTs>;
+  beforeEach(() => { ts = makeMockTs(); });
+
+  it("setCustomAvatar uploads immediately on a fresh idle bot (sync on)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.setCustomAvatar(Buffer.from([1, 2, 3]));
+    await flush();
+    expect(ts.uploadCalls.length).toBe(1);
+    expect(ts.uploadCalls[0].equals(Buffer.from([1, 2, 3]))).toBe(true);
+  });
+
+  it("setCustomAvatar uploads immediately when sync is off (always idle)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOff, "Bot");
+    pm.setCustomAvatar(Buffer.from([7]));
+    await flush();
+    expect(ts.uploadCalls.length).toBe(1);
+  });
+
+  it("setCustomAvatar while playing + sync on does NOT push (cover wins)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    // Simulate the bot playing a song. We can't actually run updateAvatar's
+    // full HTTP fetch path, but onSongChange records currentSong before
+    // updateAvatar runs, which is enough for this assertion.
+    void pm.onSongChange(fakeSong);
+    await flush();
+    const uploadsBefore = ts.uploadCalls.length;
+    pm.setCustomAvatar(Buffer.from([42]));
+    await flush();
+    expect(ts.uploadCalls.length).toBe(uploadsBefore); // no new upload
+  });
+
+  it("setCustomAvatar while playing + sync off DOES push (sync-off is idle)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOff, "Bot");
+    void pm.onSongChange(fakeSong);
+    await flush();
+    const uploadsBefore = ts.uploadCalls.length;
+    pm.setCustomAvatar(Buffer.from([42]));
+    await flush();
+    expect(ts.uploadCalls.length).toBe(uploadsBefore + 1);
+  });
+
+  it("setCustomAvatar(null) while idle clears the TS3 avatar", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.setCustomAvatar(Buffer.from([1]));
+    await flush();
+    const clearsBefore = ts.clearCalls;
+    pm.setCustomAvatar(null);
+    await flush();
+    expect(ts.clearCalls).toBe(clearsBefore + 1);
+  });
+
+  it("on stop with custom avatar set + sync on, restores custom (does not clear)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.setCustomAvatar(Buffer.from([1, 2, 3, 4]));
+    await flush();
+    const clearsBefore = ts.clearCalls;
+    await pm.onSongChange(null);
+    expect(ts.uploadCalls.at(-1)?.equals(Buffer.from([1, 2, 3, 4]))).toBe(true);
+    expect(ts.clearCalls).toBe(clearsBefore); // no extra clear
+  });
+
+  it("on stop with no custom avatar, falls back to clear", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    await pm.onSongChange(null);
+    expect(ts.clearCalls).toBe(1);
+    expect(ts.uploadCalls.length).toBe(0);
+  });
+
+  it("on connect with custom avatar set + sync ON, applies custom (spec matrix row 1)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.setCustomAvatar(Buffer.from([5, 5]));
+    await flush();
+    ts.uploadCalls.length = 0; // reset
+    pm.onConnect();
+    await flush();
+    expect(ts.uploadCalls.length).toBe(1);
+    expect(ts.uploadCalls[0].equals(Buffer.from([5, 5]))).toBe(true);
+  });
+
+  it("on connect with custom avatar set + sync OFF, applies custom", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOff, "Bot");
+    pm.setCustomAvatar(Buffer.from([9, 9]));
+    await flush();
+    ts.uploadCalls.length = 0;
+    pm.onConnect();
+    await flush();
+    expect(ts.uploadCalls.length).toBe(1);
+    expect(ts.uploadCalls[0].equals(Buffer.from([9, 9]))).toBe(true);
+  });
+
+  it("on connect with no custom avatar, does not touch avatar", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOff, "Bot");
+    pm.onConnect();
+    await flush();
+    expect(ts.uploadCalls.length).toBe(0);
+    expect(ts.clearCalls).toBe(0);
+  });
+});
+
+// #148: the persisted avatar is loaded in the BotInstance constructor, before
+// tsClient.connect() has run. Loading it must not touch the wire at all.
+describe("BotProfileManager loadCustomAvatar (pre-connect load, #148)", () => {
+  let ts: ReturnType<typeof makeMockTs>;
+  beforeEach(() => { ts = makeMockTs(); });
+
+  it("does not upload or clear anything when called before connect", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.loadCustomAvatar(Buffer.from([7, 7, 7]));
+    await flush();
+    expect(ts.uploadCalls.length).toBe(0);
+    expect(ts.clearCalls).toBe(0);
+    expect(ts.fileTransferInitUpload).not.toHaveBeenCalled();
+  });
+
+  it("the loaded avatar is uploaded once onConnect fires", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.loadCustomAvatar(Buffer.from([7, 7, 7]));
+    await flush();
+    pm.onConnect();
+    await flush();
+    expect(ts.uploadCalls.length).toBe(1);
+    expect(ts.uploadCalls[0].equals(Buffer.from([7, 7, 7]))).toBe(true);
+  });
+
+  it("survives a reconnect: onConnect re-applies the loaded avatar every time", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.loadCustomAvatar(Buffer.from([8]));
+    pm.onConnect();
+    await flush();
+    pm.onConnect();
+    await flush();
+    expect(ts.uploadCalls.length).toBe(2);
+  });
+
+  it("loading null leaves the wire untouched and onConnect stays quiet", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.loadCustomAvatar(null);
+    pm.onConnect();
+    await flush();
+    expect(ts.uploadCalls.length).toBe(0);
+    expect(ts.clearCalls).toBe(0);
+  });
+
+  it("setCustomAvatar still uploads immediately after connect (post-connect edit unchanged)", async () => {
+    const pm = new BotProfileManager(ts as any, noopLogger, cfgOn, "Bot");
+    pm.loadCustomAvatar(Buffer.from([1]));
+    pm.onConnect();
+    await flush();
+    ts.uploadCalls.length = 0;
+    pm.setCustomAvatar(Buffer.from([2, 2]));
+    await flush();
+    expect(ts.uploadCalls.length).toBe(1);
+    expect(ts.uploadCalls[0].equals(Buffer.from([2, 2]))).toBe(true);
+  });
+});

src/bot/profile.ts

@@ -0,0 +1,514 @@
+import { createHash } from "node:crypto";
+import { Readable } from "node:stream";
+import axios from "axios";
+import { TS3Client, escapeTS3 } from "../ts-protocol/client.js";
+import { HttpQueryError } from "../ts-protocol/http-query.js";
+import type { ProfileConfig } from "../data/database.js";
+import type { QueuedSong } from "../audio/queue.js";
+import type { Logger } from "../logger.js";
+
+const TS3_NICKNAME_MAX = 30;
+/** TS3 avatar max size — server default is ~300 KB. Use 200 KB to be safe. */
+const AVATAR_MAX_BYTES = 200 * 1024;
+/** Timeout for file-transfer operations (upload / delete). */
+const FILE_TRANSFER_TIMEOUT_MS = 6000;
+
+/**
+ * Manages the bot's TeamSpeak presence (avatar, description, nickname,
+ * away status, channel description, now-playing messages).
+ *
+ * Every update is permission-safe: if a feature fails due to insufficient
+ * server permissions, it silently disables itself until the next reconnect.
+ */
+export class BotProfileManager {
+  private tsClient: TS3Client;
+  private logger: Logger;
+  private config: ProfileConfig;
+  private defaultNickname: string;
+  private customAvatar: Buffer | null = null;
+  /**
+   * Tracks the last song handed to onSongChange. null means stopped/idle.
+   * Used by setCustomAvatar to decide whether the new buffer should be
+   * pushed immediately (idle) or wait for the next stop event (playing).
+   */
+  private currentSong: QueuedSong | null = null;
+
+  /** Per-feature permission-denied flags. Reset on reconnect. */
+  private permDenied = {
+    avatar: false,
+    description: false,
+    nickname: false,
+    awayStatus: false,
+    channelDesc: false,
+    nowPlayingMsg: false,
+  };
+
+  /**
+   * Monotonically increasing generation counter. Incremented on every
+   * onSongChange / onConnect call. Long-running operations (avatar
+   * download/upload) check this before committing their result — if
+   * the generation changed, a newer update has superseded them.
+   */
+  private generation = 0;
+
+  constructor(
+    tsClient: TS3Client,
+    logger: Logger,
+    config: ProfileConfig,
+    defaultNickname: string,
+  ) {
+    this.tsClient = tsClient;
+    this.logger = logger.child({ component: "profile" });
+    this.config = { ...config };
+    this.defaultNickname = defaultNickname;
+  }
+
+  // --- Public API ---
+
+  /**
+   * Store a persisted custom avatar WITHOUT touching TeamSpeak (#148).
+   *
+   * Used during BotInstance construction, when the TS connection does not
+   * exist yet: setCustomAvatar would immediately fire the three-step file
+   * transfer (fileTransferInitUpload → uploadFileData → clientupdate) against
+   * a client that has not connected, so the upload always failed and the
+   * saved avatar never appeared. onConnect() re-applies this.customAvatar
+   * once the handshake completes, so loading it silently here loses nothing.
+   */
+  loadCustomAvatar(buffer: Buffer | null): void {
+    this.customAvatar = buffer;
+  }
+
+  /**
+   * Set/clear the persistent idle avatar. Pass null to remove.
+   *
+   * If the bot is currently in an idle state (no song playing OR
+   * avatarEnabled is off), the new buffer is pushed to TS3 right away;
+   * otherwise the cover-art sync is in charge until the next stop event,
+   * at which point clearAvatar restores from this.customAvatar.
+   */
+  setCustomAvatar(buffer: Buffer | null): void {
+    this.customAvatar = buffer;
+    const idle = this.currentSong === null || !this.config.avatarEnabled;
+    if (!idle) return;
+    const gen = ++this.generation;
+    if (buffer && buffer.length > 0) {
+      void this.applyIdleAvatar(gen);
+    } else {
+      void this.clearAvatar(gen);
+    }
+  }
+
+  /**
+   * Called when a new song starts playing (song != null) or playback
+   * stops (song == null).
+   *
+   * Commands are serialized to avoid overwhelming the TS3 command queue.
+   * Nickname + away status are merged into a single `clientupdate` call.
+   *
+   * A generation counter guards against stale updates: if a newer
+   * onSongChange fires while the avatar is still downloading, the old
+   * update is discarded.
+   */
+  async onSongChange(song: QueuedSong | null): Promise<void> {
+    const gen = ++this.generation;
+    this.currentSong = song;
+
+    // 1. Avatar first — file transfer uses its own response tracker and
+    //    must run before sendCommandNoWait calls whose orphaned responses
+    //    could confuse the command matcher.
+    await this.updateAvatar(song?.coverUrl ?? null, gen);
+    if (this.generation !== gen) return; // superseded
+
+    // 2. Combined clientupdate (nickname + away in one fire-and-forget)
+    await this.updateClientProperties(song);
+    // 3. Description (clientedit on TS3, httpQuery on TS6)
+    await this.updateDescription(song);
+    // 4. Channel description (fire-and-forget channeledit)
+    await this.updateChannelDescription(song);
+    // 5. Now-playing chat message
+    if (song) await this.sendNowPlayingMessage(song);
+  }
+
+  /** Reset permission-denied flags and bump generation on new connection. */
+  onConnect(): void {
+    this.generation++;
+    this.currentSong = null;
+    this.permDenied = {
+      avatar: false,
+      description: false,
+      nickname: false,
+      awayStatus: false,
+      channelDesc: false,
+      nowPlayingMsg: false,
+    };
+    // No song is playing on a fresh connect, so the matrix says the
+    // custom avatar should be visible regardless of avatarEnabled.
+    if (this.customAvatar) {
+      const gen = this.generation;
+      void this.applyIdleAvatar(gen);
+    }
+  }
+
+  getConfig(): ProfileConfig {
+    return { ...this.config };
+  }
+
+  updateConfig(partial: Partial<ProfileConfig>): void {
+    Object.assign(this.config, partial);
+  }
+
+  // --- Internal update methods ---
+
+  private async updateAvatar(coverUrl: string | null, gen: number): Promise<void> {
+    if (!this.config.avatarEnabled || this.permDenied.avatar) return;
+    try {
+      if (!coverUrl) {
+        await this.clearAvatar(gen);
+        return;
+      }
+      // Request a thumbnail from the CDN to stay within TS3's avatar size limit.
+      const thumbUrl = this.thumbnailUrl(coverUrl);
+      const imageBuffer = await this.downloadImage(thumbUrl);
+
+      // Check generation after the slow download — bail if superseded.
+      if (this.generation !== gen) return;
+
+      if (!imageBuffer || imageBuffer.length === 0) return;
+      if (imageBuffer.length > AVATAR_MAX_BYTES) {
+        this.logger.warn(
+          { bytes: imageBuffer.length, max: AVATAR_MAX_BYTES },
+          "Cover image still too large after resize — skipping avatar update",
+        );
+        return;
+      }
+
+      // Wrap the file-transfer sequence with a timeout — the TS3
+      // full-client file transfer can silently hang.
+      const start = Date.now();
+      await this.withTimeout(this.doAvatarUpload(imageBuffer), FILE_TRANSFER_TIMEOUT_MS);
+      this.logger.info(
+        { bytes: imageBuffer.length, elapsedMs: Date.now() - start },
+        "Avatar updated",
+      );
+    } catch (err) {
+      this.handleFeatureError("avatar", err);
+    }
+  }
+
+  /**
+   * Three-step upload. Each step is logged so the log can tell us whether
+   * a broken/loading avatar on the client is from:
+   *   (a) init failing (no permission)
+   *   (b) file transfer hanging on TCP 30033
+   *   (c) client_flag_avatar not applying
+   * If (b) happens, the avatar MD5 would still be set in the past — leaving
+   * clients showing a placeholder. The flag is now only set after the TCP
+   * transfer resolves.
+   */
+  private async doAvatarUpload(imageBuffer: Buffer): Promise<void> {
+    const host = this.tsClient.getHost();
+    this.logger.debug({ bytes: imageBuffer.length, host }, "Avatar: init file transfer");
+    const info = await this.tsClient.fileTransferInitUpload(
+      0n, "/avatar", "", BigInt(imageBuffer.length), true,
+    );
+    this.logger.debug({ bytes: imageBuffer.length }, "Avatar: uploading file data");
+    await this.tsClient.uploadFileData(host, info, Readable.from(imageBuffer));
+    const md5 = createHash("md5").update(imageBuffer).digest("hex");
+    this.logger.debug({ md5 }, "Avatar: setting client_flag_avatar");
+    await this.tsClient.sendCommandNoWait(`clientupdate client_flag_avatar=${escapeTS3(md5)}`);
+  }
+
+  private async clearAvatar(gen: number): Promise<void> {
+    if (this.customAvatar && this.customAvatar.length > 0) {
+      await this.applyIdleAvatar(gen);
+      return;
+    }
+    try {
+      await this.withTimeout(
+        this.tsClient.fileTransferDeleteFile(0n, ["/avatar"]),
+        FILE_TRANSFER_TIMEOUT_MS,
+      );
+    } catch {
+      // File may not exist or transfer timed out — that's fine
+    }
+    if (this.generation !== gen) return;
+    try {
+      await this.tsClient.sendCommandNoWait("clientupdate client_flag_avatar=");
+    } catch (err) {
+      this.handleFeatureError("avatar", err);
+    }
+  }
+
+  private async applyIdleAvatar(gen: number): Promise<void> {
+    if (!this.customAvatar || this.customAvatar.length === 0) return;
+    if (this.permDenied.avatar) return;
+    try {
+      await this.withTimeout(this.doAvatarUpload(this.customAvatar), FILE_TRANSFER_TIMEOUT_MS);
+      if (this.generation !== gen) return;
+      this.logger.info({ bytes: this.customAvatar.length }, "Idle (custom) avatar applied");
+    } catch (err) {
+      this.handleFeatureError("avatar", err);
+    }
+  }
+
+  private async updateDescription(song: QueuedSong | null): Promise<void> {
+    if (!this.config.descriptionEnabled || this.permDenied.description) return;
+    try {
+      const text = song
+        ? `${song.name} - ${song.artist} [${song.album}]`
+        : "";
+      const httpQuery = this.tsClient.getHttpQuery();
+      if (httpQuery) {
+        // TS6 HTTP API: send the raw (unescaped) text. clientUpdate
+        // throws HttpQueryError on non-2xx so a silent 400/403 cannot
+        // be misreported as success.
+        const result = await httpQuery.clientUpdate({ client_description: text });
+        this.logger.info({ status: result.status }, "Description updated");
+      } else {
+        // clientupdate rejects client_description (error 1538).
+        // Use clientedit on our own clid instead — this is what
+        // TS3AudioBot does via TSLib's ChangeDescription().
+        const clid = this.tsClient.getClientId();
+        if (clid <= 0) return;
+        // Use a 5s timeout — if clientedit hangs, don't block the
+        // remaining profile updates (channeledit, now-playing msg).
+        await this.withTimeout(
+          this.tsClient.execCommand(
+            `clientedit clid=${clid} client_description=${escapeTS3(text)}`,
+          ),
+          5000,
+        );
+        this.logger.info("Description updated");
+      }
+    } catch (err) {
+      this.handleFeatureError("description", err);
+    }
+  }
+
+  /**
+   * Build and send a single `clientupdate` command that sets nickname
+   * and away status together, avoiding multiple round-trips that can
+   * cause command-queue timeouts on the TS3 protocol.
+   *
+   * Values are collected as raw strings/numbers. The TS6 HTTP path
+   * forwards them as JSON (the server expects real spaces, not `\s`);
+   * the TS3 wire path escapes them on the fly. Previously the code
+   * escaped upfront and then split the escaped string to build the
+   * JSON body, so TS6 received literal backslashes and silently
+   * rejected the update.
+   */
+  private async updateClientProperties(song: QueuedSong | null): Promise<void> {
+    const rawProps: Record<string, string | number> = {};
+
+    // --- Nickname ---
+    if (this.config.nicknameEnabled && !this.permDenied.nickname) {
+      if (!song) {
+        rawProps.client_nickname = this.defaultNickname;
+      } else {
+        const nickname = this.buildNickname(song);
+        if (nickname) {
+          rawProps.client_nickname = nickname;
+        }
+      }
+    }
+
+    // --- Away status ---
+    if (this.config.awayStatusEnabled && !this.permDenied.awayStatus) {
+      if (song) {
+        rawProps.client_away = 0;
+      } else {
+        rawProps.client_away = 1;
+        rawProps.client_away_message = "\u7B49\u5F85\u64AD\u653E";
+      }
+    }
+
+    if (Object.keys(rawProps).length === 0) return;
+
+    try {
+      const httpQuery = this.tsClient.getHttpQuery();
+      if (httpQuery) {
+        // TS6: send raw values as JSON. Throws HttpQueryError on 4xx/5xx.
+        const result = await httpQuery.clientUpdate(rawProps);
+        this.logger.info(
+          { status: result.status, props: Object.keys(rawProps) },
+          "Client properties updated (nickname + away)",
+        );
+      } else {
+        // TS3 wire protocol: escape string values inline.
+        // sendCommandNoWait: the TS3 full-client protocol often
+        // doesn't return a timely error response for clientupdate,
+        // causing execCommand to time out after 10s.
+        const parts = Object.entries(rawProps).map(([k, v]) =>
+          typeof v === "string" ? `${k}=${escapeTS3(v)}` : `${k}=${v}`,
+        );
+        await this.tsClient.sendCommandNoWait(`clientupdate ${parts.join(" ")}`);
+        this.logger.info(
+          { props: Object.keys(rawProps) },
+          "Client properties updated (nickname + away)",
+        );
+      }
+    } catch (err) {
+      // Flag both features on permission error
+      this.handleFeatureError("nickname", err);
+      this.handleFeatureError("awayStatus", err);
+    }
+  }
+
+  /**
+   * Build a nickname string that fits within TS3_NICKNAME_MAX.
+   * Uses UTF-8 byte length for the limit since TS3 counts bytes,
+   * not characters.
+   */
+  private buildNickname(song: QueuedSong): string | null {
+    const songInfo = `${song.name} - ${song.artist}`;
+    const prefix = "\u266A "; // ♪
+    const sep = " - ";
+    const suffix = `${sep}${this.defaultNickname}`;
+
+    const overheadBytes = Buffer.byteLength(prefix, "utf8") + Buffer.byteLength(suffix, "utf8");
+    if (overheadBytes >= TS3_NICKNAME_MAX) {
+      // Default nickname alone is too long with decoration — skip
+      return null;
+    }
+
+    const maxSongBytes = TS3_NICKNAME_MAX - overheadBytes;
+    const truncated = this.truncateUtf8(songInfo, maxSongBytes);
+    return `${prefix}${truncated}${suffix}`;
+  }
+
+  /**
+   * Truncate a string so its UTF-8 byte length does not exceed maxBytes.
+   * Appends an ellipsis if truncation occurred, taking its byte cost
+   * into account. Never splits a multi-byte character.
+   */
+  private truncateUtf8(str: string, maxBytes: number): string {
+    if (Buffer.byteLength(str, "utf8") <= maxBytes) return str;
+    const ellipsis = "\u2026"; // …
+    const ellipsisBytes = Buffer.byteLength(ellipsis, "utf8"); // 3
+    const target = maxBytes - ellipsisBytes;
+    if (target <= 0) return ellipsis;
+    // Walk characters, accumulating byte length
+    let byteLen = 0;
+    let end = 0;
+    for (const ch of str) {
+      const chBytes = Buffer.byteLength(ch, "utf8");
+      if (byteLen + chBytes > target) break;
+      byteLen += chBytes;
+      end += ch.length; // ch.length handles surrogate pairs
+    }
+    return str.slice(0, end) + ellipsis;
+  }
+
+  private async updateChannelDescription(song: QueuedSong | null): Promise<void> {
+    if (!this.config.channelDescEnabled || this.permDenied.channelDesc) return;
+    try {
+      const channelId = this.tsClient.getChannelId();
+      if (channelId === 0n) return; // unknown channel
+
+      if (!song) {
+        await this.tsClient.sendCommandNoWait(
+          `channeledit cid=${channelId} channel_description=`,
+        );
+        return;
+      }
+
+      const lines = [
+        `\u266A \u6B63\u5728\u64AD\u653E: ${song.name} - ${song.artist}`, // ♪ 正在播放:
+        `\u4E13\u8F91: ${song.album}`, // 专辑:
+        `\u5E73\u53F0: ${song.platform}`, // 平台:
+      ];
+      const desc = lines.join("\\n");
+      await this.tsClient.sendCommandNoWait(
+        `channeledit cid=${channelId} channel_description=${escapeTS3(desc)}`,
+      );
+    } catch (err) {
+      this.handleFeatureError("channelDesc", err);
+    }
+  }
+
+  private async sendNowPlayingMessage(song: QueuedSong): Promise<void> {
+    if (!this.config.nowPlayingMsgEnabled || this.permDenied.nowPlayingMsg) return;
+    try {
+      const text = `\u266A \u6B63\u5728\u64AD\u653E: ${song.name} - ${song.artist} [${song.album}]`;
+      await this.tsClient.sendTextMessage(text);
+    } catch (err) {
+      this.handleFeatureError("nowPlayingMsg", err);
+    }
+  }
+
+  // --- Helpers ---
+
+  /**
+   * Append CDN resize parameters to get a thumbnail suitable for TS3 avatars.
+   * NetEase and QQ Music CDNs support URL-based image resizing.
+   * BiliBili and YouTube covers fall through to the size-check guard.
+   */
+  private thumbnailUrl(url: string): string {
+    if (url.includes("music.126.net") || url.includes("netease")) {
+      return url.includes("?") ? url : `${url}?param=200y200`;
+    }
+    if (url.includes("qqmusic") || url.includes("qq.com")) {
+      return url.replace(/\/\d+$/, "/200");
+    }
+    if (url.includes("bilivideo") || url.includes("hdslb")) {
+      // BiliBili CDN supports @<w>w_<h>h suffix
+      return url.includes("@") ? url : `${url}@200w_200h`;
+    }
+    return url;
+  }
+
+  private async downloadImage(url: string): Promise<Buffer | null> {
+    try {
+      const resp = await axios.get(url, {
+        responseType: "arraybuffer",
+        timeout: 8000,
+        maxContentLength: 2 * 1024 * 1024, // 2 MB cap
+      });
+      return Buffer.from(resp.data);
+    } catch (err) {
+      this.logger.warn({ err, url }, "Failed to download cover image");
+      return null;
+    }
+  }
+
+  /** Race a promise against a timeout. */
+  private withTimeout<T>(promise: Promise<T>, ms: number): Promise<T> {
+    return Promise.race([
+      promise,
+      new Promise<never>((_, reject) =>
+        setTimeout(() => reject(new Error(`Timed out after ${ms}ms`)), ms),
+      ),
+    ]);
+  }
+
+  private handleFeatureError(
+    feature: keyof typeof this.permDenied,
+    err: unknown,
+  ): void {
+    const msg = err instanceof Error ? err.message.toLowerCase() : String(err).toLowerCase();
+    const status = err instanceof HttpQueryError ? err.status : undefined;
+    const body = err instanceof HttpQueryError ? err.body : undefined;
+    // Disable the feature for this session on unrecoverable errors:
+    // - permission / insufficient → server denies the action
+    // - invalid parameter → command not supported by this protocol
+    // - HTTP 401/403 → TS6 server rejects the API key/role
+    // - HTTP 400 → bad parameter; retrying on every song change is wasteful
+    const isUnrecoverable =
+      msg.includes("permission") ||
+      msg.includes("insufficient") ||
+      msg.includes("invalid parameter") ||
+      status === 400 ||
+      status === 401 ||
+      status === 403;
+    if (isUnrecoverable) {
+      this.permDenied[feature] = true;
+      this.logger.info(
+        { feature, status, body, reason: msg },
+        "Feature disabled for this session (will retry after reconnect)",
+      );
+    } else {
+      this.logger.warn({ feature, status, body, err }, "Profile update failed");
+    }
+  }
+}

src/bot/song-ref.test.ts

@@ -0,0 +1,122 @@
+import { describe, it, expect } from "vitest";
+import { parseSongRef, parseSelectionIndex } from "./song-ref.js";
+
+describe("parseSongRef (#90 exact-song selection)", () => {
+  it("returns null for a plain search term", () => {
+    expect(parseSongRef("Die For You")).toBeNull();
+    expect(parseSongRef("周杰伦 晴天")).toBeNull();
+    expect(parseSongRef("")).toBeNull();
+    // A bare number is NOT treated as an id (a song may be named "2002").
+    expect(parseSongRef("2002")).toBeNull();
+  });
+
+  it("parses an explicit id: prefix with no platform (defer to flags)", () => {
+    expect(parseSongRef("id:185868")).toEqual({ id: "185868", platform: null });
+    expect(parseSongRef("ID: 004Z8Ihr0JIu5s")).toEqual({ id: "004Z8Ihr0JIu5s", platform: null });
+  });
+
+  it("strips trailing punctuation from a pasted id:", () => {
+    expect(parseSongRef("id:185868.")).toEqual({ id: "185868", platform: null });
+    expect(parseSongRef("id:185868)")).toEqual({ id: "185868", platform: null });
+    expect(parseSongRef("id:185868,")).toEqual({ id: "185868", platform: null });
+  });
+
+  // Issue #139: `!play id <id>` matches the "<command> <subcommand> <arg>"
+  // shape of every other command. The colon form stays supported — users have
+  // it in their chat scrollback and in older docs.
+  it("parses the space-separated id form", () => {
+    expect(parseSongRef("id 185868")).toEqual({ id: "185868", platform: null });
+    expect(parseSongRef("ID 004Z8Ihr0JIu5s")).toEqual({ id: "004Z8Ihr0JIu5s", platform: null });
+    expect(parseSongRef("id   185868")).toEqual({ id: "185868", platform: null });
+    expect(parseSongRef("id 185868.")).toEqual({ id: "185868", platform: null });
+  });
+
+  it("does not mistake a word merely starting with 'id' for an id reference", () => {
+    expect(parseSongRef("idol")).toBeNull();
+    expect(parseSongRef("identity 185868")).toBeNull();
+    expect(parseSongRef("id")).toBeNull();
+    expect(parseSongRef("id:")).toBeNull();
+    // Two remaining tokens are a search phrase, not an id.
+    expect(parseSongRef("id die for you")).toBeNull();
+  });
+
+  // Without a colon, "id" is just a word — "ID 4" and "ID Bruno" are real track
+  // titles. The space form therefore only claims tokens that could actually be
+  // an id; everything else stays a search term.
+  it("only treats the space form as an id when the token looks like one", () => {
+    expect(parseSongRef("id Bruno")).toBeNull();
+    expect(parseSongRef("id Marshmello")).toBeNull();
+    expect(parseSongRef("id 4ever")).toBeNull();
+    // …while every real id shape is still accepted.
+    expect(parseSongRef("id 4")).toEqual({ id: "4", platform: null });          // numeric
+    expect(parseSongRef("id BV1yxHQeYEuE")).toEqual({ id: "BV1yxHQeYEuE", platform: null });
+    expect(parseSongRef("id 004Z8Ihr0JIu5s")).toEqual({ id: "004Z8Ihr0JIu5s", platform: null }); // QQ mid
+    expect(parseSongRef("id a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6")).toEqual({
+      id: "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6",
+      platform: null,
+    }); // Jellyfin GUID / Kugou hash
+  });
+
+  it("keeps the colon form unrestricted, so a short or odd id still works", () => {
+    expect(parseSongRef("id:Bruno")).toEqual({ id: "Bruno", platform: null });
+    expect(parseSongRef("id: 4ever")).toEqual({ id: "4ever", platform: null });
+  });
+
+  it("does not let the space form swallow a pasted URL", () => {
+    // `id <url>` used to fall through to the URL branches; it still must.
+    expect(parseSongRef("id https://music.163.com/song?id=185868")).toEqual({
+      id: "185868",
+      platform: "netease",
+    });
+    expect(parseSongRef("id https://y.qq.com/n/ryqq/songDetail/004Z8Ihr0JIu5s")).toEqual({
+      id: "004Z8Ihr0JIu5s",
+      platform: "qq",
+    });
+  });
+
+  it("does NOT treat NetEase collection (playlist/album/artist) URLs as a song id", () => {
+    // These reuse ?id= but are not songs — they should fall through to search,
+    // not misresolve to getSongDetail(collectionId) and error "no song".
+    expect(parseSongRef("https://music.163.com/playlist?id=123456")).toBeNull();
+    expect(parseSongRef("https://music.163.com/#/playlist?id=123456")).toBeNull();
+    expect(parseSongRef("https://music.163.com/album?id=123456")).toBeNull();
+    expect(parseSongRef("https://music.163.com/artist?id=185858")).toBeNull();
+    // A genuine song URL is still parsed.
+    expect(parseSongRef("https://music.163.com/song?id=185868")).toEqual({ id: "185868", platform: "netease" });
+  });
+
+  it("parses NetEase song URLs", () => {
+    expect(parseSongRef("https://music.163.com/song?id=185868")).toEqual({ id: "185868", platform: "netease" });
+    expect(parseSongRef("https://music.163.com/#/song?id=185868&userid=1")).toEqual({ id: "185868", platform: "netease" });
+    expect(parseSongRef("music.163.com/song/185868")).toEqual({ id: "185868", platform: "netease" });
+  });
+
+  it("parses QQ song URLs", () => {
+    expect(parseSongRef("https://y.qq.com/n/ryqq/songDetail/004Z8Ihr0JIu5s")).toEqual({ id: "004Z8Ihr0JIu5s", platform: "qq" });
+    expect(parseSongRef("https://y.qq.com/n/yqq/song/abc.html?songmid=004Z8Ihr0JIu5s")).toEqual({ id: "004Z8Ihr0JIu5s", platform: "qq" });
+  });
+
+  it("parses BiliBili BV ids (bare or in a URL)", () => {
+    expect(parseSongRef("BV1yxHQeYEuE")).toEqual({ id: "BV1yxHQeYEuE", platform: "bilibili" });
+    expect(parseSongRef("https://www.bilibili.com/video/BV1yxHQeYEuE")).toEqual({ id: "BV1yxHQeYEuE", platform: "bilibili" });
+    expect(parseSongRef("https://b23.tv/BV1yxHQeYEuE")).toEqual({ id: "BV1yxHQeYEuE", platform: "bilibili" });
+  });
+});
+
+describe("parseSelectionIndex (#90 pick from last search)", () => {
+  it("parses #N tokens (1-based)", () => {
+    expect(parseSelectionIndex("#1")).toBe(1);
+    expect(parseSelectionIndex("#2")).toBe(2);
+    expect(parseSelectionIndex("# 3")).toBe(3);
+    expect(parseSelectionIndex("  #10  ")).toBe(10);
+  });
+
+  it("rejects non-selections", () => {
+    expect(parseSelectionIndex("2")).toBeNull();
+    expect(parseSelectionIndex("#0")).toBeNull();
+    expect(parseSelectionIndex("#-1")).toBeNull();
+    expect(parseSelectionIndex("Die For You")).toBeNull();
+    expect(parseSelectionIndex("#2 extra")).toBeNull();
+    expect(parseSelectionIndex("")).toBeNull();
+  });
+});

src/bot/song-ref.ts

@@ -0,0 +1,100 @@
+/**
+ * Parsing helpers for picking an EXACT song in a !play / !add / !playnext query,
+ * so same-name songs can be disambiguated instead of always getting the single
+ * most-popular search hit (issue #90).
+ *
+ * Two mechanisms:
+ *  - A song reference: an explicit id / platform URL → play that exact song.
+ *  - A selection index: "#N" → the Nth result of the previous !search.
+ */
+
+export interface SongRef {
+  id: string;
+  /**
+   * Platform inferred from a URL. `null` means the platform wasn't encoded in
+   * the reference (e.g. a bare `id:`), so the caller should fall back to the
+   * command's flags / default provider.
+   */
+  platform: "netease" | "qq" | "bilibili" | null;
+}
+
+/**
+ * Could this token plausibly BE an id on a supported platform?
+ *   - NetEase / Kugou numeric ids      → all digits
+ *   - BiliBili                         → BV + 8-12 alphanumerics
+ *   - QQ mid (14), YouTube (11), Spotify (22), Jellyfin GUID / Kugou hash (32)
+ *                                      → 11+ chars from the id alphabet
+ * Deliberately conservative: anything rejected here just stays an ordinary
+ * search term, which is what it almost certainly was.
+ */
+function looksLikeSongId(token: string): boolean {
+  return /^(?:\d+|BV[0-9A-Za-z]{8,12}|[0-9A-Za-z_-]{11,})$/i.test(token);
+}
+
+/**
+ * Detect an explicit song reference in a query. Recognizes:
+ *   - `id <id>` / `id:<id>`             → platform from flags/default
+ *   - NetEase song URL                  → music.163.com/song?id=N (also /#/song?id=N, /song/N)
+ *   - QQ song URL                       → y.qq.com/.../songDetail/MID (or ?songmid=MID)
+ *   - BiliBili BVID (bare or in a URL)  → bilibili.com/video/BVxxxx, b23.tv, or BVxxxx
+ * Returns `null` for a plain search term (the common case).
+ */
+export function parseSongRef(raw: string): SongRef | null {
+  const q = (raw ?? "").trim();
+  if (!q) return null;
+
+  // Explicit id — platform decided by the command's flags/default. The
+  // separator is a colon or plain whitespace, so `id <id>` matches the
+  // `!<cmd> <sub> <arg>` shape of every other command (issue #139) while the
+  // older `id:<id>` keeps working. Strip trailing punctuation that tags along
+  // from a chat paste ("id:12345." / "id:12345)") — no supported id
+  // (numeric / BVID / mid) ends in those.
+  //
+  // The colon is an unambiguous sigil, so `id:<anything>` is always an id. A
+  // space is not: "ID 4" and "ID Bruno" are real track titles, and `id <url>`
+  // has to keep resolving as a URL. So the space form only claims tokens that
+  // could actually be an id; anything else falls through to the URL branches
+  // below and ultimately to a plain search.
+  const idPrefix = /^id(:\s*|\s+)(\S+)$/i.exec(q);
+  if (idPrefix) {
+    const id = idPrefix[2].replace(/[.,;)\]]+$/, "");
+    if (idPrefix[1].startsWith(":") || looksLikeSongId(id)) {
+      return { id, platform: null };
+    }
+  }
+
+  // BiliBili BV id, bare or inside a bilibili URL (NetEase ids are numeric, so
+  // a "BV..." token never collides with them).
+  const bv = /BV[0-9A-Za-z]{8,12}/.exec(q);
+  if (bv && (/^BV[0-9A-Za-z]{8,12}$/.test(q) || /bilibili\.com|b23\.tv/i.test(q))) {
+    return { id: bv[0], platform: "bilibili" };
+  }
+
+  // NetEase song URL. Only treat `id=N` as a SONG id when the URL is not a
+  // collection page (playlist/album/artist/toplist/djradio) — those reuse the
+  // same `id=` param but are NOT songs; getSongDetail() would 404 them into a
+  // confusing "no song" error instead of falling back to a normal search.
+  if (/music\.163\.com/i.test(q) && !/(playlist|album|artist|toplist|djradio)/i.test(q)) {
+    const m = /[?&#/]id=(\d+)/.exec(q) ?? /\/song\/(\d+)/.exec(q);
+    if (m) return { id: m[1], platform: "netease" };
+  }
+
+  // QQ song URL.
+  if (/y\.qq\.com/i.test(q)) {
+    const m = /songDetail\/([0-9A-Za-z]+)/.exec(q) ?? /[?&]songmid=([0-9A-Za-z]+)/i.exec(q);
+    if (m) return { id: m[1], platform: "qq" };
+  }
+
+  return null;
+}
+
+/**
+ * Detect a "#N" selection token (1-based) referencing the previous !search.
+ * Returns the positive integer, or `null` when the query isn't a selection.
+ */
+export function parseSelectionIndex(raw: string): number | null {
+  const m = /^#\s*(\d+)$/.exec((raw ?? "").trim());
+  if (!m) return null;
+  const n = parseInt(m[1], 10);
+  return Number.isFinite(n) && n > 0 ? n : null;
+}

src/bot/text-chunk.test.ts

@@ -0,0 +1,67 @@
+import { describe, it, expect } from "vitest";
+import { splitTextIntoChunks } from "./text-chunk.js";
+
+const bytes = (s: string) => Buffer.byteLength(s, "utf8");
+
+describe("splitTextIntoChunks", () => {
+  it("returns a single chunk for a short string", () => {
+    const chunks = splitTextIntoChunks("hello world", 900);
+    expect(chunks).toEqual(["hello world"]);
+  });
+
+  it("splits a multi-line string longer than maxBytes into multiple chunks on line boundaries", () => {
+    const lines = Array.from({ length: 50 }, (_, i) => `line number ${i}`);
+    const text = lines.join("\n");
+    const chunks = splitTextIntoChunks(text, 60);
+
+    expect(chunks.length).toBeGreaterThan(1);
+    for (const c of chunks) {
+      expect(bytes(c)).toBeLessThanOrEqual(60);
+    }
+    // No hard-split of any line occurred, so rejoining with "\n" is lossless.
+    expect(chunks.join("\n")).toBe(text);
+  });
+
+  it("bounds by BYTES not chars: multibyte (Chinese) content stays under the cap", () => {
+    // Each Chinese char is 3 bytes in UTF-8. 40 chars/line = 120 bytes/line.
+    const lines = Array.from({ length: 10 }, () => "歌词".repeat(20));
+    const text = lines.join("\n");
+    const chunks = splitTextIntoChunks(text, 150);
+
+    expect(chunks.length).toBeGreaterThan(1);
+    for (const c of chunks) {
+      expect(bytes(c)).toBeLessThanOrEqual(150);
+    }
+    expect(chunks.join("\n")).toBe(text);
+  });
+
+  it("hard-splits a single over-long line so no chunk exceeds the cap", () => {
+    const longLine = "a".repeat(500);
+    const chunks = splitTextIntoChunks(longLine, 100);
+
+    expect(chunks.length).toBeGreaterThan(1);
+    for (const c of chunks) {
+      expect(bytes(c)).toBeLessThanOrEqual(100);
+    }
+    // Content is preserved (hard-split introduces split points, not \n).
+    expect(chunks.join("")).toBe(longLine);
+  });
+
+  it("never splits a multibyte character across a hard-split boundary", () => {
+    // 200 Chinese chars = 600 bytes on ONE line, cap 40 bytes.
+    const longLine = "歌".repeat(200);
+    const chunks = splitTextIntoChunks(longLine, 40);
+
+    for (const c of chunks) {
+      expect(bytes(c)).toBeLessThanOrEqual(40);
+      // A clean re-decode: every chunk is valid UTF-8 with no replacement char.
+      expect(c.includes("�")).toBe(false);
+    }
+    expect(chunks.join("")).toBe(longLine);
+  });
+
+  it("preserves blank lines within a single chunk", () => {
+    const text = "a\n\nb";
+    expect(splitTextIntoChunks(text, 900)).toEqual([text]);
+  });
+});

src/bot/text-chunk.ts

@@ -0,0 +1,74 @@
+/**
+ * Split `text` into chunks whose UTF-8 byte length never exceeds `maxBytes`.
+ *
+ * TeamSpeak enforces a per-message byte cap (~1024 bytes), and the send path
+ * does no chunking, so a long single reply (e.g. full song lyrics) would be
+ * truncated or rejected. This packs whole lines greedily, breaking BETWEEN
+ * lines. When a single line is itself longer than `maxBytes`, it is hard-split
+ * on UTF-8 character boundaries so no chunk ever exceeds the cap and no
+ * multibyte character is ever cut in half.
+ *
+ * Content is preserved on rejoin, modulo the split points: chunks split only on
+ * newline boundaries rejoin losslessly with `chunks.join("\n")`; a hard-split
+ * long line rejoins with `chunks.join("")`.
+ *
+ * @param text     The full message text.
+ * @param maxBytes Max UTF-8 bytes per chunk (default 900 — under TS's ~1024 cap
+ *                 with headroom for protocol framing/escaping).
+ */
+export function splitTextIntoChunks(text: string, maxBytes = 900): string[] {
+  const chunks: string[] = [];
+  let current = "";
+
+  const flush = (): void => {
+    if (current !== "") {
+      chunks.push(current);
+      current = "";
+    }
+  };
+
+  for (const rawLine of text.split("\n")) {
+    const pieces =
+      Buffer.byteLength(rawLine, "utf8") > maxBytes
+        ? hardSplitByBytes(rawLine, maxBytes)
+        : [rawLine];
+
+    for (const piece of pieces) {
+      const candidate = current === "" ? piece : `${current}\n${piece}`;
+      if (Buffer.byteLength(candidate, "utf8") <= maxBytes) {
+        current = candidate;
+      } else {
+        // current is guaranteed non-empty here: pieces never exceed maxBytes,
+        // so an empty `current` always accepts the next piece above.
+        flush();
+        current = piece;
+      }
+    }
+  }
+
+  flush();
+  return chunks;
+}
+
+/**
+ * Break a single line into pieces each ≤ `maxBytes` UTF-8 bytes, never cutting
+ * a character (iterates code points, so surrogate pairs stay intact).
+ */
+function hardSplitByBytes(line: string, maxBytes: number): string[] {
+  const pieces: string[] = [];
+  let current = "";
+  let currentBytes = 0;
+
+  for (const ch of line) {
+    const chBytes = Buffer.byteLength(ch, "utf8");
+    if (currentBytes + chBytes > maxBytes && current !== "") {
+      pieces.push(current);
+      current = "";
+      currentBytes = 0;
+    }
+    current += ch;
+    currentBytes += chBytes;
+  }
+  if (current !== "") pieces.push(current);
+  return pieces;
+}

src/bot/voice-ducking.test.ts

@@ -0,0 +1,152 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { VoiceDuckingController } from "./voice-ducking.js";
+
+function makeHarness(
+  enabled = true,
+  volumePercent = 30,
+  timing = { attackMs: 50, holdMs: 100, releaseMs: 200 },
+) {
+  let now = 0;
+  const setDuckingGain = vi.fn<(gain: number, rampMs?: number) => void>();
+  const controller = new VoiceDuckingController(
+    { setDuckingGain },
+    { enabled, volumePercent },
+    { timing, now: () => now },
+  );
+
+  const advance = (milliseconds: number) => {
+    now += milliseconds;
+    vi.advanceTimersByTime(milliseconds);
+  };
+
+  return { controller, setDuckingGain, advance };
+}
+
+describe("VoiceDuckingController", () => {
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it("is inert while disabled", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain, advance } = makeHarness(false);
+
+    controller.handleVoiceActivity(12);
+    advance(1_000);
+
+    expect(setDuckingGain).not.toHaveBeenCalled();
+    expect(controller.isDucking()).toBe(false);
+    expect(controller.activeSpeakerCount()).toBe(0);
+  });
+
+  it("attacks once, refreshes the packet deadline, then releases", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain, advance } = makeHarness();
+
+    controller.handleVoiceActivity(12);
+    expect(setDuckingGain).toHaveBeenCalledWith(0.3, 50);
+
+    advance(60);
+    controller.handleVoiceActivity(12);
+    expect(setDuckingGain).toHaveBeenCalledTimes(1);
+
+    // The original t=100 sweep observes the refreshed t=160 deadline.
+    advance(40);
+    expect(controller.isDucking()).toBe(true);
+    expect(setDuckingGain).toHaveBeenCalledTimes(1);
+
+    advance(60);
+    expect(controller.isDucking()).toBe(false);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(1, 200);
+  });
+
+  it("stays ducked until the last overlapping speaker expires", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain, advance } = makeHarness();
+
+    controller.handleVoiceActivity(1);
+    advance(50);
+    controller.handleVoiceActivity(2);
+    advance(50);
+
+    expect(controller.activeSpeakerCount()).toBe(1);
+    expect(controller.isDucking()).toBe(true);
+    expect(setDuckingGain).toHaveBeenCalledTimes(1);
+
+    advance(50);
+    expect(controller.activeSpeakerCount()).toBe(0);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(1, 200);
+  });
+
+  it("removes a client immediately on leave without disturbing other speakers", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain } = makeHarness();
+
+    controller.handleVoiceActivity(1);
+    controller.handleVoiceActivity(2);
+    controller.removeSpeaker(1);
+    expect(controller.isDucking()).toBe(true);
+    expect(controller.activeSpeakerCount()).toBe(1);
+
+    controller.removeSpeaker(2);
+    expect(controller.isDucking()).toBe(false);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(1, 200);
+  });
+
+  it("retargets a live duck and smoothly restores when disabled", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain } = makeHarness();
+
+    controller.handleVoiceActivity(7);
+    controller.updateSettings({ enabled: true, volumePercent: 45 });
+    expect(setDuckingGain).toHaveBeenLastCalledWith(0.45, 50);
+
+    controller.updateSettings({ enabled: false, volumePercent: 45 });
+    expect(controller.isDucking()).toBe(false);
+    expect(controller.activeSpeakerCount()).toBe(0);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(1, 200);
+  });
+
+  it("attacks again when speech resumes during the release window", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain, advance } = makeHarness();
+
+    controller.handleVoiceActivity(7);
+    advance(100);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(1, 200);
+
+    advance(50);
+    controller.handleVoiceActivity(7);
+    expect(controller.isDucking()).toBe(true);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(0.3, 50);
+  });
+
+  it("invalidates an old expiry callback after reset", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain, advance } = makeHarness();
+
+    controller.handleVoiceActivity(8);
+    controller.reset(true);
+    const callsAfterReset = setDuckingGain.mock.calls.length;
+    advance(1_000);
+
+    expect(setDuckingGain).toHaveBeenCalledTimes(callsAfterReset);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(1, 0);
+  });
+
+  it("rejects invalid client ids and supports an immediate lifecycle reset", () => {
+    vi.useFakeTimers();
+    const { controller, setDuckingGain } = makeHarness();
+
+    for (const id of [0, -1, 1.5, Number.NaN]) {
+      controller.handleVoiceActivity(id);
+    }
+    expect(setDuckingGain).not.toHaveBeenCalled();
+
+    controller.handleVoiceActivity(8);
+    controller.reset(true);
+    expect(controller.isDucking()).toBe(false);
+    expect(controller.activeSpeakerCount()).toBe(0);
+    expect(setDuckingGain).toHaveBeenLastCalledWith(1, 0);
+  });
+});

src/bot/voice-ducking.ts

@@ -0,0 +1,183 @@
+export interface VoiceDuckingSettings {
+  enabled: boolean;
+  volumePercent: number;
+}
+
+export interface VoiceDuckingGainTarget {
+  setDuckingGain(gain: number, rampMs?: number): void;
+}
+
+export interface VoiceDuckingTiming {
+  attackMs: number;
+  holdMs: number;
+  releaseMs: number;
+}
+
+export const DEFAULT_VOICE_DUCKING_TIMING: Readonly<VoiceDuckingTiming> = {
+  attackMs: 50,
+  holdMs: 700,
+  releaseMs: 500,
+};
+
+interface VoiceDuckingControllerOptions {
+  timing?: Partial<VoiceDuckingTiming>;
+  now?: () => number;
+}
+
+function nonNegativeFinite(value: number | undefined, fallback: number): number {
+  return typeof value === "number" && Number.isFinite(value)
+    ? Math.max(0, value)
+    : fallback;
+}
+
+function normalizeSettings(settings: VoiceDuckingSettings): VoiceDuckingSettings {
+  return {
+    enabled: settings.enabled === true,
+    volumePercent:
+      typeof settings.volumePercent === "number" && Number.isFinite(settings.volumePercent)
+        ? Math.max(0, Math.min(100, settings.volumePercent))
+        : 30,
+  };
+}
+
+/**
+ * Converts the stream of incoming TeamSpeak voice packets into a stable
+ * ducking envelope. TeamSpeak's full-client protocol exposes voice packets,
+ * but not an explicit "stopped talking" event, so a speaker remains active
+ * for a short hold period after their most recent packet.
+ *
+ * Only one timeout is live at a time. Repeated ~20 ms voice packets update a
+ * deadline in the map instead of constantly destroying/recreating timers.
+ */
+export class VoiceDuckingController {
+  private settings: VoiceDuckingSettings;
+  private readonly timing: VoiceDuckingTiming;
+  private readonly now: () => number;
+  private readonly activeUntil = new Map<number, number>();
+  private expiryTimer: ReturnType<typeof setTimeout> | null = null;
+  private timerDueAt = Number.POSITIVE_INFINITY;
+  private timerGeneration = 0;
+  private ducking = false;
+
+  constructor(
+    private readonly target: VoiceDuckingGainTarget,
+    initialSettings: VoiceDuckingSettings,
+    options: VoiceDuckingControllerOptions = {},
+  ) {
+    this.settings = normalizeSettings(initialSettings);
+    this.timing = {
+      attackMs: nonNegativeFinite(options.timing?.attackMs, DEFAULT_VOICE_DUCKING_TIMING.attackMs),
+      holdMs: nonNegativeFinite(options.timing?.holdMs, DEFAULT_VOICE_DUCKING_TIMING.holdMs),
+      releaseMs: nonNegativeFinite(options.timing?.releaseMs, DEFAULT_VOICE_DUCKING_TIMING.releaseMs),
+    };
+    this.now = options.now ?? (() => performance.now());
+  }
+
+  handleVoiceActivity(clientId: number): void {
+    if (!this.settings.enabled || !Number.isInteger(clientId) || clientId <= 0) return;
+
+    const now = this.now();
+    this.activeUntil.set(clientId, now + this.timing.holdMs);
+
+    if (!this.ducking) {
+      this.ducking = true;
+      this.target.setDuckingGain(this.settings.volumePercent / 100, this.timing.attackMs);
+    }
+
+    this.scheduleNextSweep(now);
+  }
+
+  removeSpeaker(clientId: number): void {
+    if (!this.activeUntil.delete(clientId)) return;
+    if (this.activeUntil.size === 0) {
+      this.cancelTimer();
+      this.release();
+    }
+  }
+
+  updateSettings(settings: VoiceDuckingSettings): void {
+    const previous = this.settings;
+    this.settings = normalizeSettings(settings);
+
+    if (!this.settings.enabled) {
+      this.activeUntil.clear();
+      this.cancelTimer();
+      this.release();
+      return;
+    }
+
+    if (
+      previous.volumePercent !== this.settings.volumePercent &&
+      this.ducking
+    ) {
+      this.target.setDuckingGain(this.settings.volumePercent / 100, this.timing.attackMs);
+    }
+  }
+
+  /** Clear all activity. Disconnects use an immediate reset; disabling the
+   * feature uses updateSettings(), which returns smoothly over releaseMs. */
+  reset(immediate = true): void {
+    this.activeUntil.clear();
+    this.cancelTimer();
+    this.ducking = false;
+    this.target.setDuckingGain(1, immediate ? 0 : this.timing.releaseMs);
+  }
+
+  isDucking(): boolean {
+    return this.ducking;
+  }
+
+  activeSpeakerCount(): number {
+    return this.activeUntil.size;
+  }
+
+  private scheduleNextSweep(now = this.now()): void {
+    if (this.activeUntil.size === 0) return;
+
+    let nextDueAt = Number.POSITIVE_INFINITY;
+    for (const deadline of this.activeUntil.values()) {
+      if (deadline < nextDueAt) nextDueAt = deadline;
+    }
+
+    // Keeping an earlier timer is intentional. When it fires it will observe
+    // the refreshed deadline and schedule the remaining delay, avoiding timer
+    // churn on every incoming packet.
+    if (this.expiryTimer && this.timerDueAt <= nextDueAt) return;
+
+    this.cancelTimer();
+    const generation = ++this.timerGeneration;
+    this.timerDueAt = nextDueAt;
+    this.expiryTimer = setTimeout(() => {
+      if (generation !== this.timerGeneration) return;
+      this.expiryTimer = null;
+      this.timerDueAt = Number.POSITIVE_INFINITY;
+      this.sweepExpiredSpeakers();
+    }, Math.max(0, nextDueAt - now));
+  }
+
+  private sweepExpiredSpeakers(): void {
+    const now = this.now();
+    for (const [clientId, deadline] of this.activeUntil) {
+      if (deadline <= now) this.activeUntil.delete(clientId);
+    }
+
+    if (this.activeUntil.size > 0) {
+      this.scheduleNextSweep(now);
+    } else {
+      this.release();
+    }
+  }
+
+  private release(): void {
+    if (!this.ducking) return;
+    this.ducking = false;
+    this.target.setDuckingGain(1, this.timing.releaseMs);
+  }
+
+  private cancelTimer(): void {
+    this.timerGeneration++;
+    if (this.expiryTimer) clearTimeout(this.expiryTimer);
+    this.expiryTimer = null;
+    this.timerDueAt = Number.POSITIVE_INFINITY;
+  }
+}

src/data/audit.test.ts

@@ -0,0 +1,58 @@
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
+import { createDatabase, type BotDatabase } from "./database.js";
+import { createAuditStore, type AuditStore } from "./audit.js";
+
+describe("AuditStore", () => {
+  let botDb: BotDatabase;
+  let audit: AuditStore;
+
+  beforeEach(() => {
+    botDb = createDatabase(":memory:");
+    audit = createAuditStore(botDb.db);
+  });
+
+  afterEach(() => botDb.close());
+
+  it("records and lists entries newest-first", async () => {
+    audit.record({
+      actorId: "a1", actorUsername: "alice",
+      targetUserId: "b1", targetUsername: "bob",
+      action: "user.created",
+    });
+    await new Promise((r) => setTimeout(r, 5));
+    audit.record({
+      actorId: "a1", actorUsername: "alice",
+      targetUserId: "b1", targetUsername: "bob",
+      action: "user.deleted",
+    });
+    const list = audit.list(10, 0);
+    expect(list).toHaveLength(2);
+    expect(list[0].action).toBe("user.deleted");
+    expect(list[1].action).toBe("user.created");
+  });
+
+  it("supports limit and offset", () => {
+    for (let i = 0; i < 5; i++) {
+      audit.record({
+        actorId: "a1", actorUsername: "alice",
+        targetUserId: null, targetUsername: null,
+        action: "user.password_changed",
+      });
+    }
+    expect(audit.list(2, 0)).toHaveLength(2);
+    expect(audit.list(2, 4)).toHaveLength(1);
+    expect(audit.list(10, 10)).toHaveLength(0);
+  });
+
+  it("stores nullable fields correctly", () => {
+    audit.record({
+      actorId: null, actorUsername: null,
+      targetUserId: "x", targetUsername: "deleted-user",
+      action: "admin.first_created",
+    });
+    const e = audit.list(1, 0)[0];
+    expect(e.actorId).toBeNull();
+    expect(e.actorUsername).toBeNull();
+    expect(e.targetUserId).toBe("x");
+  });
+});

src/data/audit.ts

@@ -0,0 +1,58 @@
+import type Database from "better-sqlite3";
+
+export type AuditAction =
+  | "admin.first_created"
+  | "user.created"
+  | "user.deleted"
+  | "user.password_reset"
+  | "user.password_changed"
+  | "user.role_changed"
+  | "user.permissions_changed";
+
+export interface AuditEntry {
+  id: number;
+  timestamp: number;
+  actorId: string | null;
+  actorUsername: string | null;
+  targetUserId: string | null;
+  targetUsername: string | null;
+  action: AuditAction;
+}
+
+export interface AuditRecordInput {
+  actorId: string | null;
+  actorUsername: string | null;
+  targetUserId: string | null;
+  targetUsername: string | null;
+  action: AuditAction;
+}
+
+export interface AuditStore {
+  record(input: AuditRecordInput): void;
+  list(limit: number, offset: number): AuditEntry[];
+}
+
+export function createAuditStore(db: Database.Database): AuditStore {
+  const insertStmt = db.prepare(
+    "INSERT INTO user_audit (timestamp, actorId, actorUsername, targetUserId, targetUsername, action) VALUES (?, ?, ?, ?, ?, ?)"
+  );
+  const listStmt = db.prepare(
+    "SELECT id, timestamp, actorId, actorUsername, targetUserId, targetUsername, action FROM user_audit ORDER BY timestamp DESC, id DESC LIMIT ? OFFSET ?"
+  );
+
+  return {
+    record(input) {
+      insertStmt.run(
+        Date.now(),
+        input.actorId,
+        input.actorUsername,
+        input.targetUserId,
+        input.targetUsername,
+        input.action
+      );
+    },
+    list(limit, offset) {
+      return listStmt.all(limit, offset) as AuditEntry[];
+    },
+  };
+}

src/data/avatars.test.ts

@@ -0,0 +1,61 @@
+import { describe, it, expect, beforeEach } from "vitest";
+import { mkdtempSync, rmSync, existsSync, readFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { createAvatarStore } from "./avatars.js";
+
+let dir: string;
+
+beforeEach(() => {
+  dir = mkdtempSync(join(tmpdir(), "avatar-test-"));
+});
+
+describe("createAvatarStore", () => {
+  it("write returns a relative path under the store dir", () => {
+    const store = createAvatarStore(dir);
+    const buf = Buffer.from("fake-png");
+    const rel = store.write("bot-1", "image/png", buf);
+    expect(rel).toBe("bot-1.png");
+    expect(readFileSync(join(dir, "bot-1.png")).equals(buf)).toBe(true);
+  });
+
+  it("write picks correct extension for jpeg / webp", () => {
+    const store = createAvatarStore(dir);
+    expect(store.write("a", "image/jpeg", Buffer.from(""))).toBe("a.jpg");
+    expect(store.write("b", "image/webp", Buffer.from(""))).toBe("b.webp");
+  });
+
+  it("write rejects unsupported MIME types", () => {
+    const store = createAvatarStore(dir);
+    expect(() => store.write("c", "image/gif", Buffer.from(""))).toThrow(/unsupported/i);
+  });
+
+  it("read returns the bytes for an existing file", () => {
+    const store = createAvatarStore(dir);
+    store.write("bot-1", "image/png", Buffer.from("hello"));
+    const buf = store.read("bot-1.png");
+    expect(buf?.equals(Buffer.from("hello"))).toBe(true);
+  });
+
+  it("read returns null when path is missing", () => {
+    const store = createAvatarStore(dir);
+    expect(store.read("missing.png")).toBeNull();
+  });
+
+  it("remove deletes the file (idempotent)", () => {
+    const store = createAvatarStore(dir);
+    store.write("bot-1", "image/png", Buffer.from("x"));
+    store.remove("bot-1.png");
+    expect(existsSync(join(dir, "bot-1.png"))).toBe(false);
+    expect(() => store.remove("bot-1.png")).not.toThrow();
+  });
+
+  it("write replaces any existing file for the same botId regardless of old extension", () => {
+    const store = createAvatarStore(dir);
+    store.write("bot-1", "image/png", Buffer.from("old"));
+    const rel = store.write("bot-1", "image/jpeg", Buffer.from("new"));
+    expect(rel).toBe("bot-1.jpg");
+    expect(existsSync(join(dir, "bot-1.png"))).toBe(false);
+    expect(existsSync(join(dir, "bot-1.jpg"))).toBe(true);
+  });
+});

src/data/avatars.ts

@@ -0,0 +1,43 @@
+import { mkdirSync, writeFileSync, readFileSync, rmSync, readdirSync, existsSync } from "node:fs";
+import { join } from "node:path";
+
+const MIME_TO_EXT: Record<string, string> = {
+  "image/png": "png",
+  "image/jpeg": "jpg",
+  "image/webp": "webp",
+};
+
+export interface AvatarStore {
+  /** Returns the relative path written (e.g. "bot-1.png"). */
+  write(botId: string, mime: string, buffer: Buffer): string;
+  read(relPath: string): Buffer | null;
+  remove(relPath: string): void;
+  getDir(): string;
+}
+
+export function createAvatarStore(dir: string): AvatarStore {
+  if (!existsSync(dir)) mkdirSync(dir, { recursive: true });
+  return {
+    write(botId, mime, buffer) {
+      const ext = MIME_TO_EXT[mime];
+      if (!ext) throw new Error(`unsupported avatar MIME: ${mime}`);
+      for (const name of readdirSync(dir)) {
+        if (name.startsWith(`${botId}.`)) rmSync(join(dir, name), { force: true });
+      }
+      const rel = `${botId}.${ext}`;
+      writeFileSync(join(dir, rel), buffer);
+      return rel;
+    },
+    read(relPath) {
+      const full = join(dir, relPath);
+      if (!existsSync(full)) return null;
+      return readFileSync(full);
+    },
+    remove(relPath) {
+      rmSync(join(dir, relPath), { force: true });
+    },
+    getDir() {
+      return dir;
+    },
+  };
+}

src/data/config.test.ts

@@ -1,8 +1,31 @@
-import { describe, it, expect, afterEach } from "vitest";
+import { describe, it, expect, afterEach, beforeEach, vi } from "vitest";
 import { join } from "node:path";
-import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import {
+  mkdtempSync,
+  rmSync,
+  writeFileSync,
+  existsSync,
+  readFileSync,
+  readdirSync,
+  renameSync,
+} from "node:fs";
 import { tmpdir } from "node:os";
-import { getDefaultConfig, loadConfig, saveConfig } from "./config.js";
+import { getDefaultConfig, loadConfig, saveConfig, migrateLegacyConfig, defaultPlatform } from "./config.js";
+
+// Wrap the fs functions config.ts uses in call-through spies so the atomic-write
+// and transient-read-error paths can be observed/forced. Everything else (mkdtemp,
+// rmSync, existsSync, …) is the real implementation via `...actual`, so all other
+// tests keep their real filesystem behavior. `vi.spyOn` can't be used here because
+// the node:fs ESM namespace is non-configurable in this setup.
+vi.mock("node:fs", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("node:fs")>();
+  return {
+    ...actual,
+    readFileSync: vi.fn(actual.readFileSync),
+    writeFileSync: vi.fn(actual.writeFileSync),
+    renameSync: vi.fn(actual.renameSync),
+  };
+});
 
 describe("config", () => {
   const dirs: string[] = [];
@@ -25,6 +48,232 @@ describe("config", () => {
     expect(config).toEqual(getDefaultConfig());
   });
 
+  it("defaults voice ducking to disabled at 30 percent", () => {
+    expect(getDefaultConfig().voiceDucking).toEqual({
+      enabled: false,
+      volumePercent: 30,
+    });
+  });
+
+  it("fills voiceDucking defaults for legacy and partial configs", () => {
+    const dir = makeTmpDir();
+    const legacyPath = join(dir, "legacy.json");
+    writeFileSync(legacyPath, JSON.stringify({ webPort: 4000 }));
+    expect(loadConfig(legacyPath).voiceDucking).toEqual({
+      enabled: false,
+      volumePercent: 30,
+    });
+
+    const partialPath = join(dir, "partial.json");
+    writeFileSync(partialPath, JSON.stringify({ voiceDucking: { enabled: true } }));
+    expect(loadConfig(partialPath).voiceDucking).toEqual({
+      enabled: true,
+      volumePercent: 30,
+    });
+  });
+
+  it("loadConfig preserves valid voiceDucking values including range endpoints", () => {
+    const dir = makeTmpDir();
+    for (const volumePercent of [0, 37.5, 100]) {
+      const path = join(dir, `voice-ducking-${volumePercent}.json`);
+      writeFileSync(
+        path,
+        JSON.stringify({ voiceDucking: { enabled: true, volumePercent } }),
+      );
+      expect(loadConfig(path).voiceDucking).toEqual({ enabled: true, volumePercent });
+    }
+  });
+
+  it("loadConfig strictly sanitizes malformed voiceDucking values", () => {
+    const dir = makeTmpDir();
+    const malformed: Array<{ name: string; json: string }> = [
+      { name: "null-block", json: JSON.stringify({ voiceDucking: null }) },
+      { name: "array-block", json: JSON.stringify({ voiceDucking: [true, 10] }) },
+      { name: "string-block", json: JSON.stringify({ voiceDucking: "on" }) },
+      {
+        name: "wrong-types",
+        json: JSON.stringify({ voiceDucking: { enabled: "yes", volumePercent: "25" } }),
+      },
+      {
+        name: "below-range",
+        json: JSON.stringify({ voiceDucking: { enabled: true, volumePercent: -1 } }),
+      },
+      {
+        name: "above-range",
+        json: JSON.stringify({ voiceDucking: { enabled: true, volumePercent: 101 } }),
+      },
+      // JSON.parse("1e309") produces Infinity, exercising the finite-number guard.
+      {
+        name: "non-finite",
+        json: '{"voiceDucking":{"enabled":true,"volumePercent":1e309}}',
+      },
+    ];
+
+    for (const testCase of malformed) {
+      const path = join(dir, `${testCase.name}.json`);
+      writeFileSync(path, testCase.json);
+      const loaded = loadConfig(path).voiceDucking;
+      if (testCase.name === "below-range" || testCase.name === "above-range" || testCase.name === "non-finite") {
+        expect(loaded).toEqual({ enabled: true, volumePercent: 30 });
+      } else {
+        expect(loaded).toEqual({ enabled: false, volumePercent: 30 });
+      }
+    }
+  });
+
+  it("defaults to the online sources with jellyfin as opt-in (disabled)", () => {
+    const config = getDefaultConfig();
+    expect(config.enabledProviders).toEqual(["netease", "qq", "bilibili", "youtube", "kugou"]);
+    expect(config.enabledProviders).not.toContain("jellyfin");
+  });
+
+  it("keeps pre-gating behavior for legacy configs without enabledProviders", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    // A config written before enabledProviders existed: no such field.
+    writeFileSync(path, JSON.stringify({ webPort: 4000 }));
+    const config = loadConfig(path);
+    expect(config.enabledProviders).toEqual(["netease", "qq", "bilibili", "youtube", "kugou"]);
+    expect(defaultPlatform(config)).toBe("netease");
+  });
+
+  it("defaultPlatform follows the fixed priority order", () => {
+    const config = getDefaultConfig();
+    expect(defaultPlatform(config)).toBe("netease");
+
+    // Jellyfin ranks after the online music platforms…
+    config.enabledProviders = ["netease", "jellyfin"];
+    expect(defaultPlatform(config)).toBe("netease");
+    // …but ahead of the video sites…
+    config.enabledProviders = ["bilibili", "jellyfin", "youtube"];
+    expect(defaultPlatform(config)).toBe("jellyfin");
+    // …and is the default when it is the only enabled source.
+    config.enabledProviders = ["jellyfin"];
+    expect(defaultPlatform(config)).toBe("jellyfin");
+    // Nothing enabled → netease fallback (the gate then reports it disabled).
+    config.enabledProviders = [];
+    expect(defaultPlatform(config)).toBe("netease");
+  });
+
+  // --- #126: an explicit operator default source ---
+
+  it("defaultPlatform is null by default (follow the priority order)", () => {
+    expect(getDefaultConfig().defaultPlatform).toBeNull();
+  });
+
+  it("defaultPlatform() honors an explicit, enabled preference over the priority order", () => {
+    const config = getDefaultConfig();
+    // Priority would pick netease; a Bilibili-loving server sets B站 instead (#126).
+    config.defaultPlatform = "bilibili";
+    expect(defaultPlatform(config)).toBe("bilibili");
+  });
+
+  it("defaultPlatform() ignores a preference whose source is not enabled", () => {
+    const config = getDefaultConfig();
+    config.defaultPlatform = "jellyfin"; // opt-in, not enabled in the default config
+    // Falls back to the fixed priority order (netease)…
+    expect(defaultPlatform(config)).toBe("netease");
+    // …until the preferred source is actually enabled.
+    config.enabledProviders = [...config.enabledProviders, "jellyfin"];
+    expect(defaultPlatform(config)).toBe("jellyfin");
+  });
+
+  it("loadConfig keeps a valid, enabled defaultPlatform", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    writeFileSync(path, JSON.stringify({ defaultPlatform: "bilibili" }));
+    const config = loadConfig(path);
+    expect(config.defaultPlatform).toBe("bilibili");
+    expect(defaultPlatform(config)).toBe("bilibili");
+  });
+
+  it("loadConfig nulls a defaultPlatform that is unknown, disabled, or the wrong type", () => {
+    const dir = makeTmpDir();
+    // Unknown provider name.
+    const p1 = join(dir, "c1.json");
+    writeFileSync(p1, JSON.stringify({ defaultPlatform: "bogus" }));
+    expect(loadConfig(p1).defaultPlatform).toBeNull();
+    // Known provider, but not in enabledProviders.
+    const p2 = join(dir, "c2.json");
+    writeFileSync(p2, JSON.stringify({ enabledProviders: ["netease"], defaultPlatform: "bilibili" }));
+    expect(loadConfig(p2).defaultPlatform).toBeNull();
+    // Wrong type.
+    const p3 = join(dir, "c3.json");
+    writeFileSync(p3, JSON.stringify({ defaultPlatform: 42 }));
+    expect(loadConfig(p3).defaultPlatform).toBeNull();
+  });
+
+  it("round-trips defaultPlatform through save/load", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    saveConfig(path, { ...getDefaultConfig(), defaultPlatform: "qq" });
+    expect(loadConfig(path).defaultPlatform).toBe("qq");
+  });
+
+  it("respects an explicit jellyfin-only enabledProviders from disk", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    // e.g. a config persisted by the short-lived jellyfin-by-default builds.
+    writeFileSync(path, JSON.stringify({ enabledProviders: ["jellyfin"] }));
+    const config = loadConfig(path);
+    expect(config.enabledProviders).toEqual(["jellyfin"]);
+    expect(defaultPlatform(config)).toBe("jellyfin");
+  });
+
+  // ── audioQuality persistence (#125) ─────────────────────────────────────
+  it("defaults audioQuality to each provider's in-memory default", () => {
+    const config = getDefaultConfig();
+    expect(config.audioQuality).toEqual({
+      netease: "exhigh",
+      qq: "exhigh",
+      bilibili: "high",
+      kugou: "128",
+      jellyfin: "direct",
+    });
+  });
+
+  it("fills audioQuality defaults for a legacy config without the field", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    writeFileSync(path, JSON.stringify({ webPort: 4000 }));
+    const config = loadConfig(path);
+    expect(config.audioQuality).toEqual(getDefaultConfig().audioQuality);
+  });
+
+  it("round-trips a saved audioQuality through save/load", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    const config = getDefaultConfig();
+    config.audioQuality = {
+      netease: "lossless",
+      qq: "flac",
+      bilibili: "high",
+      kugou: "flac",
+      jellyfin: "320",
+    };
+    saveConfig(path, config);
+    const loaded = loadConfig(path);
+    expect(loaded.audioQuality).toEqual(config.audioQuality);
+  });
+
+  it("coerces missing / non-string audioQuality fields to defaults", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    // netease valid, qq blank, bilibili wrong type, kugou missing, jellyfin valid.
+    writeFileSync(
+      path,
+      JSON.stringify({ audioQuality: { netease: "lossless", qq: "  ", bilibili: 320, jellyfin: "192" } }),
+    );
+    const config = loadConfig(path);
+    expect(config.audioQuality).toEqual({
+      netease: "lossless",
+      qq: "exhigh", // blank → default
+      bilibili: "high", // non-string → default
+      kugou: "128", // missing → default
+      jellyfin: "192",
+    });
+  });
+
   it("creates config file on save", () => {
     const dir = makeTmpDir();
     const path = join(dir, "sub", "config.json");
@@ -49,6 +298,406 @@ describe("config", () => {
     // defaults should fill in the rest
     expect(loaded.theme).toBe("dark");
     expect(loaded.commandPrefix).toBe("!");
-    expect(loaded.autoPauseOnEmpty).toBe(true);
+    // auto-pause defaults OFF (occupancy detection is unreliable on some servers)
+    expect(loaded.autoPauseOnEmpty).toBe(false);
+  });
+
+  // --- #86: config.json must live under (and be created in) the persisted data dir ---
+
+  it("first run writes config.json into the data dir and reads it back", () => {
+    const root = makeTmpDir();
+    const dataDir = join(root, "data");
+    const configPath = join(dataDir, "config.json"); // mirrors index.ts CONFIG_PATH
+
+    // Boot sequence: load (missing -> defaults) then save.
+    const config = loadConfig(configPath);
+    saveConfig(configPath, config);
+
+    expect(existsSync(configPath)).toBe(true);
+    // A subsequent hand-edited file under the SAME persisted path is honored.
+    writeFileSync(configPath, JSON.stringify({ webPort: 9999 }), "utf-8");
+    expect(loadConfig(configPath).webPort).toBe(9999);
+  });
+
+  it("migrates a legacy root config into the data dir, preserving values", () => {
+    const root = makeTmpDir();
+    const legacyPath = join(root, "config.json");
+    const newPath = join(root, "data", "config.json");
+    writeFileSync(legacyPath, JSON.stringify({ webPort: 4242, publicUrl: "http://x" }), "utf-8");
+
+    const migrated = migrateLegacyConfig(legacyPath, newPath);
+
+    expect(migrated).toBe(true);
+    expect(existsSync(newPath)).toBe(true);
+    expect(existsSync(legacyPath)).toBe(false); // legacy moved, not duplicated
+    const loaded = loadConfig(newPath);
+    expect(loaded.webPort).toBe(4242);
+    expect(loaded.publicUrl).toBe("http://x");
+  });
+
+  it("does NOT overwrite an existing data-dir config during migration", () => {
+    const root = makeTmpDir();
+    const legacyPath = join(root, "config.json");
+    const newPath = join(root, "data", "config.json");
+    writeFileSync(legacyPath, JSON.stringify({ webPort: 1111 }), "utf-8");
+    saveConfig(newPath, { ...getDefaultConfig(), webPort: 2222 });
+
+    const migrated = migrateLegacyConfig(legacyPath, newPath);
+
+    expect(migrated).toBe(false); // new location wins, untouched
+    expect(loadConfig(newPath).webPort).toBe(2222);
+    expect(existsSync(legacyPath)).toBe(true); // legacy left intact when not migrated
+  });
+
+  it("migration is a no-op when there is no legacy config", () => {
+    const root = makeTmpDir();
+    const migrated = migrateLegacyConfig(join(root, "config.json"), join(root, "data", "config.json"));
+    expect(migrated).toBe(false);
+  });
+});
+
+describe("guestMode config", () => {
+  it("defaults to disabled, all-bots, append-only", () => {
+    const c = getDefaultConfig();
+    expect(c.guestMode.enabled).toBe(false);
+    expect(c.guestMode.bots).toBe("all");
+    expect(c.guestMode.permissions).toEqual({
+      addToQueue: true, playNext: false, playNow: false,
+      skip: false, transport: false, removeClear: false, playMode: false,
+      playCollection: false,
+    });
+  });
+
+  it("deep-merges a partial guestMode so missing sub-keys are back-filled", () => {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-cfg-"));
+    const p = join(dir, "config.json");
+    writeFileSync(p, JSON.stringify({ guestMode: { enabled: true, permissions: { playNext: true } } }));
+    const c = loadConfig(p);
+    expect(c.guestMode.enabled).toBe(true);
+    expect(c.guestMode.bots).toBe("all"); // back-filled
+    expect(c.guestMode.permissions.playNext).toBe(true);
+    expect(c.guestMode.permissions.addToQueue).toBe(true); // back-filled default
+    expect(c.guestMode.permissions.skip).toBe(false); // back-filled default
+    rmSync(dir, { recursive: true, force: true });
+  });
+
+  // --- B1: loadConfig must sanitize a hand-edited/legacy/corrupt guestMode ---
+
+  function loadGuestMode(raw: unknown) {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-cfg-"));
+    const p = join(dir, "config.json");
+    writeFileSync(p, JSON.stringify(raw));
+    try {
+      return loadConfig(p).guestMode;
+    } finally {
+      rmSync(dir, { recursive: true, force: true });
+    }
+  }
+
+  describe("bots normalization", () => {
+    it("a numeric bots value falls back to the default \"all\" (no crash)", () => {
+      const gm = loadGuestMode({ guestMode: { bots: 5 } });
+      expect(gm.bots).toBe("all");
+    });
+    it("an array bots value is filtered to strings only", () => {
+      const gm = loadGuestMode({ guestMode: { bots: ["a", 2, "b"] } });
+      expect(gm.bots).toEqual(["a", "b"]);
+    });
+    it("the literal \"all\" is preserved", () => {
+      const gm = loadGuestMode({ guestMode: { bots: "all" } });
+      expect(gm.bots).toBe("all");
+    });
+  });
+
+  describe("permissions coercion", () => {
+    it("a non-boolean truthy flag is coerced to false; a real true stays true", () => {
+      const gm = loadGuestMode({ guestMode: { permissions: { skip: 1, playNext: true } } });
+      expect(gm.permissions.skip).toBe(false);
+      expect(gm.permissions.playNext).toBe(true);
+    });
+    it("a string permissions value yields defaults with no numeric index keys", () => {
+      const gm = loadGuestMode({ guestMode: { permissions: "hacked" } });
+      // all known flags present at their defaults
+      expect(gm.permissions).toEqual({
+        addToQueue: true, playNext: false, playNow: false,
+        skip: false, transport: false, removeClear: false, playMode: false,
+        playCollection: false,
+      });
+      // no garbage index keys leaked from spreading a string
+      expect((gm.permissions as unknown as Record<string, unknown>)["0"]).toBeUndefined();
+    });
+  });
+});
+
+describe("adminGroups normalization", () => {
+  function loadAdminGroups(raw: unknown) {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-cfg-"));
+    const p = join(dir, "config.json");
+    writeFileSync(p, JSON.stringify(raw));
+    try {
+      return loadConfig(p).adminGroups;
+    } finally {
+      rmSync(dir, { recursive: true, force: true });
+    }
+  }
+
+  it("defaults to [] when absent", () => {
+    expect(loadAdminGroups({})).toEqual([]);
+  });
+  it("keeps valid non-negative integers", () => {
+    expect(loadAdminGroups({ adminGroups: [6, 8] })).toEqual([6, 8]);
+  });
+  it("filters out negatives, non-integers and non-numbers", () => {
+    expect(loadAdminGroups({ adminGroups: [6, -1, 2.5, "8", null] })).toEqual([6]);
+  });
+  it("a non-array value falls back to the default [] (no crash)", () => {
+    expect(loadAdminGroups({ adminGroups: "6" })).toEqual([]);
+  });
+});
+
+describe("spotify config", () => {
+  it("defaults are present and disabled", () => {
+    const c = getDefaultConfig();
+    expect(c.spotify).toEqual({
+      enabled: false,
+      backend: "auto",
+      clientId: "",
+      clientSecret: "",
+      deviceName: "TSMusicBot",
+      bitrate: 320,
+    });
+  });
+
+  it("loadConfig coerces bad spotify values back to safe defaults", () => {
+    const dir = mkdtempSync(join(tmpdir(), "cfg-"));
+    const p = join(dir, "config.json");
+    writeFileSync(
+      p,
+      JSON.stringify({
+        spotify: { enabled: "yes", backend: "bogus", bitrate: 7, clientId: 5 },
+      })
+    );
+    const c = loadConfig(p);
+    expect(c.spotify.enabled).toBe(false); // non-boolean → false
+    expect(c.spotify.backend).toBe("auto"); // invalid enum → auto
+    expect(c.spotify.bitrate).toBe(320); // invalid → 320
+    expect(c.spotify.clientId).toBe(""); // non-string → ""
+    expect(c.spotify.deviceName).toBe("TSMusicBot"); // missing → default
+  });
+
+  it("loadConfig preserves valid spotify values", () => {
+    const dir = mkdtempSync(join(tmpdir(), "cfg-"));
+    const p = join(dir, "config.json");
+    writeFileSync(
+      p,
+      JSON.stringify({
+        spotify: {
+          enabled: true,
+          backend: "librespot",
+          clientId: "abc",
+          clientSecret: "def",
+          deviceName: "MyBot",
+          bitrate: 160,
+        },
+      })
+    );
+    const c = loadConfig(p);
+    expect(c.spotify).toEqual({
+      enabled: true,
+      backend: "librespot",
+      clientId: "abc",
+      clientSecret: "def",
+      deviceName: "MyBot",
+      bitrate: 160,
+    });
+  });
+});
+
+// --- R2-1: saveConfig must write atomically (temp file + rename), never truncate ---
+
+describe("saveConfig atomic write", () => {
+  const dirs: string[] = [];
+  function makeTmpDir(): string {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-atomic-"));
+    dirs.push(dir);
+    return dir;
+  }
+  beforeEach(() => {
+    vi.clearAllMocks(); // reset call history, keep the call-through implementations
+  });
+  afterEach(() => {
+    for (const d of dirs) rmSync(d, { recursive: true, force: true });
+    dirs.length = 0;
+  });
+
+  it("round-trips (save then load equals) and leaves NO .tmp file behind", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    const config = { ...getDefaultConfig(), webPort: 4567, adminPassword: "pw" };
+
+    saveConfig(path, config);
+
+    expect(loadConfig(path)).toEqual(config);
+    // No temp remnants in the target directory.
+    expect(readdirSync(dir).filter((f) => f.includes(".tmp"))).toEqual([]);
+  });
+
+  it("writes via a same-dir temp file then renameSync onto the final path", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+
+    saveConfig(path, getDefaultConfig());
+
+    expect(vi.mocked(renameSync)).toHaveBeenCalled();
+    const [from, to] = vi.mocked(renameSync).mock.calls[0] as [string, string];
+    expect(to).toBe(path); // renamed ONTO the real path
+    expect(String(from)).not.toBe(path); // ...from a distinct temp file
+    expect(join(String(from), "..")).toBe(join(path, "..")); // ...in the SAME directory
+  });
+
+  it("does not corrupt a pre-existing valid config when saving over it", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    saveConfig(path, { ...getDefaultConfig(), adminPassword: "first", webPort: 1234 });
+
+    // Overwrite with a different, fully-formed config.
+    saveConfig(path, { ...getDefaultConfig(), adminPassword: "second", webPort: 9999 });
+
+    const loaded = loadConfig(path);
+    expect(loaded.adminPassword).toBe("second");
+    expect(loaded.webPort).toBe(9999);
+    // The on-disk file is a single complete JSON document (no partial/truncated write).
+    expect(() => JSON.parse(readFileSync(path, "utf-8"))).not.toThrow();
+    expect(readdirSync(dir).filter((f) => f.includes(".tmp"))).toEqual([]);
+  });
+
+  it("cleans up the temp file (no .tmp remnant) when the rename fails", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    vi.mocked(renameSync).mockImplementationOnce(() => {
+      throw new Error("rename boom");
+    });
+
+    expect(() => saveConfig(path, getDefaultConfig())).toThrow(/rename boom/);
+    // The failed write left no temp file lying around.
+    expect(readdirSync(dir).filter((f) => f.includes(".tmp"))).toEqual([]);
+  });
+});
+
+// --- R2-2: loadConfig must not treat a transient/corrupt read as "missing" ---
+
+describe("loadConfig error handling", () => {
+  const dirs: string[] = [];
+  function makeTmpDir(): string {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-load-"));
+    dirs.push(dir);
+    return dir;
+  }
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+  afterEach(() => {
+    for (const d of dirs) rmSync(d, { recursive: true, force: true });
+    dirs.length = 0;
+  });
+
+  it("(a) ENOENT (missing file) returns defaults — unchanged first-run behavior", () => {
+    const dir = makeTmpDir();
+    expect(loadConfig(join(dir, "config.json"))).toEqual(getDefaultConfig());
+  });
+
+  it("(b) a non-ENOENT read error (EBUSY) rethrows instead of returning defaults", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    // A REAL config exists on disk; a transient lock must NOT collapse to defaults
+    // (the caller would otherwise overwrite this real config with defaults).
+    saveConfig(path, { ...getDefaultConfig(), adminPassword: "keep-me" });
+    vi.mocked(readFileSync).mockImplementationOnce(() => {
+      const err = new Error("EBUSY: resource busy or locked") as NodeJS.ErrnoException;
+      err.code = "EBUSY";
+      throw err;
+    });
+
+    expect(() => loadConfig(path)).toThrow(/EBUSY/);
+    // The on-disk config is untouched and still readable once the lock clears.
+    expect(loadConfig(path).adminPassword).toBe("keep-me");
+  });
+
+  it("(c) corrupt JSON returns defaults AND backs up the original to *.corrupt-*", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    const garbage = "{ not: valid json, ";
+    writeFileSync(path, garbage, "utf-8");
+
+    const loaded = loadConfig(path);
+
+    expect(loaded).toEqual(getDefaultConfig());
+    const backups = readdirSync(dir).filter((f) => f.includes(".corrupt-"));
+    expect(backups.length).toBeGreaterThan(0);
+    // The corrupt original is preserved verbatim (recoverable, never deleted).
+    expect(readFileSync(join(dir, backups[0]), "utf-8")).toBe(garbage);
+  });
+
+  // (d)/(e) Valid JSON that is NOT a non-null object (null / [] / 42 / "str") passes
+  // JSON.parse but would throw a raw TypeError in the per-field sanitize block
+  // (property access on a non-object), bypassing the corrupt-backup path. It must be
+  // treated EXACTLY like corrupt JSON: back up to *.corrupt-* (original preserved),
+  // return defaults — NOT a thrown TypeError, and NOT a silent defaults-with-no-backup.
+  it("(d) a `null` config is treated as corrupt: defaults + *.corrupt-* backup (original preserved)", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    writeFileSync(path, "null", "utf-8");
+
+    let loaded: ReturnType<typeof getDefaultConfig>;
+    expect(() => {
+      loaded = loadConfig(path);
+    }).not.toThrow();
+
+    expect(loaded!).toEqual(getDefaultConfig());
+    const backups = readdirSync(dir).filter((f) => f.includes(".corrupt-"));
+    expect(backups.length).toBeGreaterThan(0);
+    expect(readFileSync(join(dir, backups[0]), "utf-8")).toBe("null");
+  });
+
+  it("(e) a non-object config (`[]` / `42`) is backed up + defaults, not a thrown TypeError", () => {
+    for (const content of ["[]", "42"]) {
+      const dir = makeTmpDir();
+      const path = join(dir, "config.json");
+      writeFileSync(path, content, "utf-8");
+
+      let loaded: ReturnType<typeof getDefaultConfig>;
+      expect(() => {
+        loaded = loadConfig(path);
+      }).not.toThrow();
+
+      expect(loaded!).toEqual(getDefaultConfig());
+      const backups = readdirSync(dir).filter((f) => f.includes(".corrupt-"));
+      expect(backups.length).toBeGreaterThan(0);
+      expect(readFileSync(join(dir, backups[0]), "utf-8")).toBe(content);
+    }
+  });
+
+  it("defaults savedQueuesEnabled and playKeepsQueue to false", () => {
+    const c = getDefaultConfig();
+    expect(c.savedQueuesEnabled).toBe(false);
+    expect(c.playKeepsQueue).toBe(false);
+  });
+
+  it("coerces non-boolean savedQueues/playKeepsQueue values to false on load", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    writeFileSync(path, JSON.stringify({ savedQueuesEnabled: "yes", playKeepsQueue: 1 }));
+    const c = loadConfig(path);
+    expect(c.savedQueuesEnabled).toBe(false);
+    expect(c.playKeepsQueue).toBe(false);
+  });
+
+  it("preserves savedQueues/playKeepsQueue true when explicitly enabled", () => {
+    const dir = makeTmpDir();
+    const path = join(dir, "config.json");
+    writeFileSync(path, JSON.stringify({ savedQueuesEnabled: true, playKeepsQueue: true }));
+    const c = loadConfig(path);
+    expect(c.savedQueuesEnabled).toBe(true);
+    expect(c.playKeepsQueue).toBe(true);
   });
 });

src/data/config.ts

@@ -1,5 +1,111 @@
-import { readFileSync, writeFileSync, mkdirSync } from "node:fs";
+import {
+  readFileSync,
+  writeFileSync,
+  mkdirSync,
+  existsSync,
+  copyFileSync,
+  rmSync,
+  renameSync,
+} from "node:fs";
 import { dirname } from "node:path";
+import type { BotAccess, GuestPermissions } from "./permissions.js";
+import { GUEST_PERMISSION_FLAGS } from "./permissions.js";
+
+export interface GuestModeConfig {
+  enabled: boolean;
+  bots: BotAccess; // "all" | string[]
+  permissions: GuestPermissions;
+}
+
+export interface SpotifyConfig {
+  enabled: boolean;
+  backend: "auto" | "go-librespot" | "librespot";
+  clientId: string;
+  clientSecret: string;
+  deviceName: string;
+  bitrate: number;
+}
+
+export interface JellyfinConfig {
+  /** Base URL of the Jellyfin server, e.g. "https://jellyfin.example.com". */
+  serverUrl: string;
+  authMode: "userpass" | "apikey";
+  // userpass mode
+  username: string;
+  password: string;
+  // apikey mode: admin API key + the user whose library/favorites/playlists are used
+  apiKey: string;
+  userId: string;
+}
+
+/**
+ * Per-provider audio quality (音质), persisted so a restart keeps the user's
+ * choice instead of resetting each provider to its in-memory default (#125).
+ * The values are the same strings the WebUI/REST `POST /api/music/quality`
+ * endpoint sends and each provider's setQuality() accepts; on startup they are
+ * replayed onto the (shared, process-wide) providers. Providers ignore/normalize
+ * unknown values, so a stale/hand-edited entry can never break playback.
+ */
+export interface AudioQualityConfig {
+  netease: string;
+  qq: string;
+  bilibili: string;
+  kugou: string;
+  jellyfin: string;
+}
+
+export interface VoiceDuckingConfig {
+  enabled: boolean;
+  /** Percentage of the normal playback volume retained while someone speaks. */
+  volumePercent: number;
+}
+
+/**
+ * Providers gated by `enabledProviders`. Not listed here:
+ *  - "local"   → governed by the existing `localAudioEnabled` flag
+ *  - "spotify" → governed by the existing `spotify.enabled` flag
+ */
+export const GATEABLE_PROVIDERS = [
+  "jellyfin",
+  "netease",
+  "qq",
+  "bilibili",
+  "youtube",
+  "kugou",
+] as const;
+export type GateableProvider = (typeof GATEABLE_PROVIDERS)[number];
+
+/** Whether a platform may be used for search/playback under the current config. */
+export function isProviderEnabled(config: BotConfig, platform: string): boolean {
+  if (platform === "local") return config.localAudioEnabled !== false;
+  if (platform === "spotify") return config.spotify.enabled;
+  return config.enabledProviders.includes(platform as GateableProvider);
+}
+
+/**
+ * The default platform for !play/!add/!playlist/!album and all REST/WebUI calls.
+ *
+ * An explicit user preference (`config.defaultPlatform`) wins whenever it points
+ * at a source that is currently enabled — this lets e.g. a Bilibili-loving server
+ * set B站 as the default so `!play <歌名>` needs no `-b` flag (issue #126). The
+ * enabled-guard here matters at runtime too: if the operator later disables the
+ * preferred source, we must fall through instead of returning a dead default.
+ *
+ * With no (usable) preference we fall back to the first enabled provider in a
+ * fixed priority order (netease with the default config; jellyfin ranks after
+ * the online music platforms because it is an opt-in source, but ahead of the
+ * video sites for users who run it as their only music library). Falls back to
+ * "netease" when nothing is enabled so callers always get a provider — the
+ * enabled-gate then produces the friendly error.
+ */
+export function defaultPlatform(config: BotConfig): GateableProvider {
+  const pref = config.defaultPlatform;
+  if (pref && config.enabledProviders.includes(pref)) return pref;
+  for (const p of ["netease", "qq", "kugou", "jellyfin", "bilibili", "youtube"] as const) {
+    if (config.enabledProviders.includes(p)) return p;
+  }
+  return "netease";
+}
 
 export interface BotConfig {
   webPort: number;
@@ -13,6 +119,53 @@ export interface BotConfig {
   adminGroups: number[];
   autoReturnDelay: number;
   autoPauseOnEmpty: boolean;
+  /** Lower music volume while voice from another client is being received. */
+  voiceDucking: VoiceDuckingConfig;
+  idleTimeoutMinutes: number;
+  /** Enable uploading and playback of server-stored local audio files. */
+  localAudioEnabled: boolean;
+  /**
+   * Enable named save/load of queues (chat + web) AND auto-restore of the live
+   * queue across a restart. Admin-controlled; default false so nothing is
+   * persisted/restored until an operator opts in.
+   */
+  savedQueuesEnabled: boolean;
+  /**
+   * When true, a single-song immediate !play (chat) / play-song (web) inserts
+   * after the current track and jumps to it instead of clearing the queue, so
+   * the rest of the queue survives and continues afterwards. Default false
+   * keeps today's clear-and-play behavior.
+   */
+  playKeepsQueue: boolean;
+  // Public base URL used when generating share links (e.g. the bot专属链接).
+  // Leave empty to use the browser's current origin. Example:
+  //   "https://music.example.com" or "http://1.2.3.4:3000"
+  publicUrl: string;
+  // When true, Express trusts X-Forwarded-* headers from a reverse proxy
+  // (nginx/Caddy/Cloudflare). Required for correct protocol/host detection
+  // behind HTTPS-terminating proxies.
+  trustProxy: boolean;
+  guestMode: GuestModeConfig;
+  spotify: SpotifyConfig;
+  jellyfin: JellyfinConfig;
+  /** Persisted per-provider audio quality (音质), restored on startup (#125). */
+  audioQuality: AudioQualityConfig;
+  /**
+   * Which gateable providers are active (see GATEABLE_PROVIDERS). Default is
+   * the online sources (NetEase/QQ/Bilibili/YouTube/Kugou); jellyfin is an
+   * opt-in extra that must be listed here (Settings → Jellyfin 音乐库 toggles
+   * it). Sources not listed stay disabled — the NetEase/QQ embedded sidecar
+   * API servers must not start (or bind ports 3001/3200) unless enabled.
+   */
+  enabledProviders: GateableProvider[];
+  /**
+   * Optional operator-chosen default source for commands/REST/WebUI calls that
+   * omit a platform (issue #126). When set to an enabled gateable provider it
+   * overrides the fixed priority order in defaultPlatform(); `null` (the default)
+   * keeps that priority order. loadConfig cleans stale/unknown/disabled values
+   * back to null.
+   */
+  defaultPlatform: GateableProvider | null;
 }
 
 export function getDefaultConfig(): BotConfig {
@@ -27,22 +180,343 @@ export function getDefaultConfig(): BotConfig {
     adminPassword: "",
     adminGroups: [],
     autoReturnDelay: 300,
-    autoPauseOnEmpty: true,
+    // Default OFF: occupancy detection relies on the full-client `clientlist`
+    // command, which is unreliable on some servers (it can time out when other
+    // clients are present). Users can opt in from the web UI.
+    autoPauseOnEmpty: false,
+    voiceDucking: {
+      enabled: false,
+      volumePercent: 30,
+    },
+    idleTimeoutMinutes: 0,
+    localAudioEnabled: true,
+    savedQueuesEnabled: false,
+    playKeepsQueue: false,
+    publicUrl: "",
+    trustProxy: false,
+    guestMode: {
+      enabled: false,
+      bots: "all",
+      permissions: {
+        addToQueue: true,
+        playNext: false,
+        playNow: false,
+        skip: false,
+        transport: false,
+        removeClear: false,
+        playMode: false,
+        playCollection: false,
+      },
+    },
+    spotify: {
+      enabled: false,
+      backend: "auto",
+      clientId: "",
+      clientSecret: "",
+      deviceName: "TSMusicBot",
+      bitrate: 320,
+    },
+    jellyfin: {
+      serverUrl: "",
+      authMode: "userpass",
+      username: "",
+      password: "",
+      apiKey: "",
+      userId: "",
+    },
+    // Mirrors each provider's own in-memory default quality; overwritten on
+    // startup once the user has changed a quality (persisted via #125).
+    audioQuality: {
+      netease: "exhigh",
+      qq: "exhigh",
+      bilibili: "high",
+      kugou: "128",
+      jellyfin: "direct",
+    },
+    enabledProviders: ["netease", "qq", "bilibili", "youtube", "kugou"],
+    defaultPlatform: null,
   };
 }
 
+/**
+ * Move an unusable config aside to a timestamped `*.corrupt-*` backup so the data
+ * stays recoverable (it is NEVER deleted), for both the corrupt-JSON case and the
+ * parses-but-not-an-object case. Prefer an atomic same-dir rename; if that fails,
+ * copy instead. If it can't be preserved at all, rethrow rather than let the caller
+ * overwrite unrecoverable data.
+ */
+function backupCorruptConfig(path: string): void {
+  const backup = `${path}.corrupt-${Date.now()}`;
+  try {
+    renameSync(path, backup);
+  } catch {
+    try {
+      copyFileSync(path, backup);
+    } catch (backupErr) {
+      throw backupErr;
+    }
+  }
+}
+
 export function loadConfig(path: string): BotConfig {
   const defaults = getDefaultConfig();
+
+  // Distinguish the three failure modes so a *real* on-disk config is NEVER
+  // silently replaced with defaults (the caller saveConfig()s right after load,
+  // which would otherwise erase spotify creds / adminPassword / adminGroups /
+  // guestMode permanently):
+  //   (a) file ABSENT (ENOENT) — normal first run → defaults.
+  //   (b) any OTHER read error (EBUSY/EACCES/EPERM/EISDIR/…) on an existing file —
+  //       rethrow (fail-fast at boot). A loud crash beats silent credential loss.
+  //   (c) file readable but JSON.parse fails (corrupt) — back the file up first
+  //       (never delete it), THEN return defaults so boot can proceed.
+  let raw: string;
   try {
-    const raw = readFileSync(path, "utf-8");
-    const partial = JSON.parse(raw) as Partial<BotConfig>;
-    return { ...defaults, ...partial };
+    raw = readFileSync(path, "utf-8");
+  } catch (err) {
+    if ((err as NodeJS.ErrnoException).code === "ENOENT") {
+      return defaults; // (a) missing file — first run
+    }
+    throw err; // (b) transient/permission error on an existing file — do not clobber it
+  }
+
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(raw);
   } catch {
+    // (c) Corrupt content: move the unreadable file aside to a timestamped backup
+    // so the data stays recoverable, then fall back to defaults.
+    backupCorruptConfig(path);
     return defaults;
   }
+
+  // (d) Parses cleanly but is NOT a non-null object (e.g. `null`, `42`, `"str"`,
+  // `[]`). The per-field sanitize below assumes an object and would throw a raw
+  // TypeError (or silently spread junk), bypassing the corrupt-backup path. Treat
+  // it EXACTLY like corrupt JSON: back it up (never delete), then return defaults.
+  if (typeof parsed !== "object" || parsed === null || Array.isArray(parsed)) {
+    backupCorruptConfig(path);
+    return defaults;
+  }
+  const partial = parsed as Partial<BotConfig>;
+
+  {
+    // Normalize/sanitize guestMode on load. The WRITE path (POST /api/bot/settings)
+    // sanitizes too, but a hand-edited/legacy/corrupt config.json reaches the gate
+    // directly — so coerce it here as well, mirroring that write-path logic.
+    const partialGm = (partial.guestMode ?? {}) as Partial<GuestModeConfig>;
+    const gm: GuestModeConfig = {
+      ...defaults.guestMode,
+      ...partialGm,
+      // bots → "all" | string[]; anything else falls back to the default ("all").
+      bots:
+        partialGm.bots === "all"
+          ? "all"
+          : Array.isArray(partialGm.bots)
+            ? partialGm.bots.filter((id): id is string => typeof id === "string")
+            : defaults.guestMode.bots,
+      // permissions → defaults, then spread ONLY a plain object, then strict-coerce
+      // each known flag to a boolean (drops index keys + non-boolean values).
+      permissions: { ...defaults.guestMode.permissions },
+    };
+    const partialPerms = partialGm.permissions;
+    if (
+      partialPerms !== null &&
+      typeof partialPerms === "object" &&
+      !Array.isArray(partialPerms)
+    ) {
+      Object.assign(gm.permissions, partialPerms);
+    }
+    for (const f of GUEST_PERMISSION_FLAGS) {
+      gm.permissions[f] = gm.permissions[f] === true;
+    }
+
+    // Sanitize adminGroups on load too: the WebUI write path filters it, but a
+    // hand-edited / legacy / corrupt config.json reaches the command gate
+    // directly. Keep only non-negative integers; a non-array falls back to the
+    // default []. Mirrors the guestMode sanitization above.
+    const adminGroups = Array.isArray(partial.adminGroups)
+      ? partial.adminGroups.filter(
+          (g): g is number => typeof g === "number" && Number.isInteger(g) && g >= 0,
+        )
+      : defaults.adminGroups;
+
+    const partialSp = (partial.spotify ?? {}) as Partial<SpotifyConfig>;
+    const validBackends = ["auto", "go-librespot", "librespot"] as const;
+    const validBitrates = [96, 160, 320];
+    const spotify: SpotifyConfig = {
+      enabled: partialSp.enabled === true,
+      backend: (validBackends as readonly string[]).includes(partialSp.backend as string)
+        ? (partialSp.backend as SpotifyConfig["backend"])
+        : defaults.spotify.backend,
+      clientId: typeof partialSp.clientId === "string" ? partialSp.clientId : defaults.spotify.clientId,
+      clientSecret:
+        typeof partialSp.clientSecret === "string" ? partialSp.clientSecret : defaults.spotify.clientSecret,
+      deviceName:
+        typeof partialSp.deviceName === "string" && partialSp.deviceName.trim()
+          ? partialSp.deviceName
+          : defaults.spotify.deviceName,
+      bitrate: validBitrates.includes(partialSp.bitrate as number)
+        ? (partialSp.bitrate as number)
+        : defaults.spotify.bitrate,
+    };
+
+    // Sanitize the jellyfin block on load, mirroring the spotify handling: a
+    // hand-edited/legacy config.json must never smuggle wrong shapes past the
+    // gate. Unknown/invalid sub-fields fall back to defaults.
+    const partialJf = (partial.jellyfin ?? {}) as Partial<JellyfinConfig>;
+    const jellyfin: JellyfinConfig = {
+      serverUrl:
+        typeof partialJf.serverUrl === "string"
+          ? partialJf.serverUrl.trim().replace(/\/+$/, "")
+          : defaults.jellyfin.serverUrl,
+      authMode:
+        partialJf.authMode === "apikey" ? "apikey" : defaults.jellyfin.authMode,
+      username:
+        typeof partialJf.username === "string" ? partialJf.username : defaults.jellyfin.username,
+      password:
+        typeof partialJf.password === "string" ? partialJf.password : defaults.jellyfin.password,
+      apiKey: typeof partialJf.apiKey === "string" ? partialJf.apiKey : defaults.jellyfin.apiKey,
+      userId: typeof partialJf.userId === "string" ? partialJf.userId : defaults.jellyfin.userId,
+    };
+
+    // enabledProviders → known providers only; a non-array falls back to the
+    // default (online sources, jellyfin off). An explicitly-empty array is
+    // respected (operator chose to disable every gateable source).
+    const enabledProviders = Array.isArray(partial.enabledProviders)
+      ? partial.enabledProviders.filter((p): p is GateableProvider =>
+          (GATEABLE_PROVIDERS as readonly string[]).includes(p as string),
+        )
+      : defaults.enabledProviders;
+
+    // Strict-coerce the two feature flags exactly like spotify.enabled so a
+    // hand-edited / legacy / corrupt config.json can never silently enable
+    // them (`"yes"`, `1`, `null` → false; only a literal `true` enables).
+    const savedQueuesEnabled = partial.savedQueuesEnabled === true;
+    const playKeepsQueue = partial.playKeepsQueue === true;
+
+    // Voice ducking is opt-in and the retained-volume percentage is consumed
+    // directly by the audio path. Only a plain-object block with correctly
+    // typed, finite and in-range fields may override the safe defaults.
+    const rawVoiceDucking = partial.voiceDucking;
+    const partialVoiceDucking =
+      rawVoiceDucking !== null &&
+      typeof rawVoiceDucking === "object" &&
+      !Array.isArray(rawVoiceDucking)
+        ? (rawVoiceDucking as Partial<VoiceDuckingConfig>)
+        : {};
+    const rawVolumePercent = partialVoiceDucking.volumePercent;
+    const voiceDucking: VoiceDuckingConfig = {
+      enabled:
+        typeof partialVoiceDucking.enabled === "boolean"
+          ? partialVoiceDucking.enabled
+          : defaults.voiceDucking.enabled,
+      volumePercent:
+        typeof rawVolumePercent === "number" &&
+        Number.isFinite(rawVolumePercent) &&
+        rawVolumePercent >= 0 &&
+        rawVolumePercent <= 100
+          ? rawVolumePercent
+          : defaults.voiceDucking.volumePercent,
+    };
+
+    // defaultPlatform → an explicit operator default (issue #126). Keep it only
+    // when it names a KNOWN gateable provider that is ALSO currently enabled;
+    // anything else (unknown value, disabled source, wrong type, missing) becomes
+    // null so defaultPlatform() falls back to the fixed priority order.
+    const rawDefault = partial.defaultPlatform;
+    const defaultPlatformPref: GateableProvider | null =
+      typeof rawDefault === "string" &&
+      (GATEABLE_PROVIDERS as readonly string[]).includes(rawDefault) &&
+      enabledProviders.includes(rawDefault as GateableProvider)
+        ? (rawDefault as GateableProvider)
+        : null;
+
+    // audioQuality → per-provider strings; each field falls back to its default
+    // when missing/blank/non-string (a hand-edited/legacy config must never smuggle
+    // a non-string past the gate — the value is fed straight to provider.setQuality).
+    const partialAq = (partial.audioQuality ?? {}) as Partial<AudioQualityConfig>;
+    const coerceQuality = (v: unknown, fallback: string): string =>
+      typeof v === "string" && v.trim() ? v : fallback;
+    const audioQuality: AudioQualityConfig = {
+      netease: coerceQuality(partialAq.netease, defaults.audioQuality.netease),
+      qq: coerceQuality(partialAq.qq, defaults.audioQuality.qq),
+      bilibili: coerceQuality(partialAq.bilibili, defaults.audioQuality.bilibili),
+      kugou: coerceQuality(partialAq.kugou, defaults.audioQuality.kugou),
+      jellyfin: coerceQuality(partialAq.jellyfin, defaults.audioQuality.jellyfin),
+    };
+
+    return {
+      ...defaults,
+      ...partial,
+      adminGroups,
+      guestMode: gm,
+      spotify,
+      jellyfin,
+      audioQuality,
+      enabledProviders,
+      savedQueuesEnabled,
+      playKeepsQueue,
+      voiceDucking,
+      defaultPlatform: defaultPlatformPref,
+    };
+  }
 }
 
 export function saveConfig(path: string, config: BotConfig): void {
   mkdirSync(dirname(path), { recursive: true });
-  writeFileSync(path, JSON.stringify(config, null, 2), "utf-8");
+  const json = JSON.stringify(config, null, 2);
+
+  // Atomic write: serialize to a sibling temp file in the SAME directory, then
+  // rename it onto the final path. rename is an atomic replace on POSIX and modern
+  // Windows, so a crash / power loss / ENOSPC mid-write can never leave config.json
+  // truncated — a reader always sees either the previous file or the fully-written
+  // new one, never a partial. The temp lives in the same dir so the rename stays on
+  // one filesystem (a cross-device rename would fail); pid + timestamp keep
+  // concurrent writers from colliding on the temp name.
+  const tmp = `${path}.${process.pid}.${Date.now()}.tmp`;
+  try {
+    writeFileSync(tmp, json, "utf-8");
+    renameSync(tmp, path);
+  } catch (err) {
+    // Never leave a partial temp file behind on failure.
+    try {
+      rmSync(tmp, { force: true });
+    } catch {
+      /* best-effort cleanup */
+    }
+    throw err;
+  }
+}
+
+/**
+ * One-time migration for the config location fix (#86).
+ *
+ * Older versions wrote config.json to the app/repo ROOT, which is NOT inside the
+ * persisted data directory (the Docker volume is mounted at data/). That meant the
+ * file never landed in the volume on first run and a manually-placed data/config.json
+ * was ignored. config.json now lives under the data dir alongside the DB/cookies/logs.
+ *
+ * If a legacy root-level config exists and the new data-dir config does not yet exist,
+ * move it so existing local installs keep their customized settings. Best-effort:
+ * any failure is swallowed and loadConfig falls back to defaults.
+ *
+ * @returns true if a legacy config was migrated, false otherwise.
+ */
+export function migrateLegacyConfig(legacyPath: string, newPath: string): boolean {
+  try {
+    if (legacyPath === newPath) return false;
+    if (existsSync(newPath)) return false; // new location already populated — leave it
+    if (!existsSync(legacyPath)) return false; // nothing to migrate
+    mkdirSync(dirname(newPath), { recursive: true });
+    copyFileSync(legacyPath, newPath); // copy first (works across filesystems)
+    try {
+      rmSync(legacyPath);
+    } catch {
+      /* leave the legacy file if it can't be removed; the new one wins */
+    }
+    return true;
+  } catch {
+    return false;
+  }
 }

src/data/database.test.ts

@@ -1,5 +1,9 @@
+import { mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
 import { describe, it, expect, beforeEach, afterEach } from "vitest";
-import { createDatabase, type BotDatabase, type BotInstance, type PlayHistoryEntry } from "./database.js";
+import { createDatabase, SHARED_QUEUE_OWNER, type BotDatabase, type BotInstance, type PlayHistoryEntry } from "./database.js";
+import { createUserStore, GUEST_USER_ID } from "./users.js";
 
 describe("database", () => {
   let botDb: BotDatabase;
@@ -23,6 +27,30 @@ describe("database", () => {
     expect(names).toContain("bot_instances");
   });
 
+  it("creates users and sessions tables on init", () => {
+    const tables = botDb.db
+      .prepare("SELECT name FROM sqlite_master WHERE type='table' ORDER BY name")
+      .all() as Array<{ name: string }>;
+    const names = tables.map((t) => t.name);
+    expect(names).toContain("users");
+    expect(names).toContain("sessions");
+
+    const userCols = botDb.db.prepare("PRAGMA table_info(users)").all() as Array<{ name: string }>;
+    const userColNames = userCols.map((c) => c.name).sort();
+    expect(userColNames).toEqual(["createdAt", "id", "passwordHash", "role", "updatedAt", "username"]);
+
+    const sessionCols = botDb.db.prepare("PRAGMA table_info(sessions)").all() as Array<{ name: string }>;
+    const sessionColNames = sessionCols.map((c) => c.name).sort();
+    expect(sessionColNames).toEqual(["createdAt", "expiresAt", "id", "lastSeenAt", "userId"]);
+  });
+
+  it("creates user_audit table on init", () => {
+    const tables = botDb.db
+      .prepare("SELECT name FROM sqlite_master WHERE type='table' ORDER BY name")
+      .all() as Array<{ name: string }>;
+    expect(tables.map((t) => t.name)).toContain("user_audit");
+  });
+
   it("records and retrieves play history", () => {
     botDb.addPlayHistory({
       botId: "bot1",
@@ -32,6 +60,7 @@ describe("database", () => {
       album: "Test Album",
       platform: "netease",
       coverUrl: "https://example.com/cover.jpg",
+      requestedBy: "alice",
     });
 
     botDb.addPlayHistory({
@@ -48,6 +77,7 @@ describe("database", () => {
     expect(history).toHaveLength(2);
     expect(history[0].songName).toBe("Another Song");
     expect(history[1].songName).toBe("Test Song");
+    expect(history[1].requestedBy).toBe("alice");
   });
 
   it("saves and loads bot instances", () => {
@@ -58,14 +88,18 @@ describe("database", () => {
       serverPort: 9987,
       nickname: "MusicBot",
       defaultChannel: "Music",
+      channelId: "",
       channelPassword: "",
       autoStart: true,
+      serverProtocol: "",
+      ts6ApiKey: "",
+      serverPassword: "",
     };
 
     botDb.saveBotInstance(instance);
     const instances = botDb.getBotInstances();
     expect(instances).toHaveLength(1);
-    expect(instances[0]).toEqual(instance);
+    expect(instances[0]).toMatchObject(instance);
     expect(instances[0].autoStart).toBe(true);
 
     // Test upsert
@@ -84,12 +118,230 @@ describe("database", () => {
       serverPort: 9987,
       nickname: "MusicBot",
       defaultChannel: "Music",
+      channelId: "",
       channelPassword: "",
       autoStart: false,
+      serverProtocol: "",
+      ts6ApiKey: "",
+      serverPassword: "",
     });
 
     expect(botDb.deleteBotInstance("bot1")).toBe(true);
     expect(botDb.getBotInstances()).toHaveLength(0);
     expect(botDb.deleteBotInstance("nonexistent")).toBe(false);
   });
+
+  it("persists and restores per-bot player settings (volume + play mode) (#125)", () => {
+    const inst = {
+      id: "bot-ps",
+      name: "B",
+      serverAddress: "x",
+      serverPort: 9987,
+      nickname: "n",
+      defaultChannel: "",
+      channelId: "",
+      channelPassword: "",
+      autoStart: false,
+      serverProtocol: "",
+      ts6ApiKey: "",
+      serverPassword: "",
+    };
+    botDb.saveBotInstance(inst);
+
+    // Fresh row → in-memory defaults.
+    expect(botDb.getPlayerSettings("bot-ps")).toEqual({ volume: 75, playMode: "seq" });
+
+    // Volume and play mode persist independently.
+    botDb.saveVolume("bot-ps", 42);
+    expect(botDb.getPlayerSettings("bot-ps")).toEqual({ volume: 42, playMode: "seq" });
+    botDb.savePlayMode("bot-ps", "rloop");
+    expect(botDb.getPlayerSettings("bot-ps")).toEqual({ volume: 42, playMode: "rloop" });
+
+    // A later saveBotInstance upsert (e.g. autoStart toggle) must NOT reset them.
+    botDb.saveBotInstance({ ...inst, autoStart: true });
+    expect(botDb.getPlayerSettings("bot-ps")).toEqual({ volume: 42, playMode: "rloop" });
+  });
+
+  it("defaults player settings for an unknown bot and validates inputs (#125)", () => {
+    // No row → defaults.
+    expect(botDb.getPlayerSettings("does-not-exist")).toEqual({ volume: 75, playMode: "seq" });
+
+    botDb.saveBotInstance({
+      id: "bot-v",
+      name: "B",
+      serverAddress: "x",
+      serverPort: 9987,
+      nickname: "n",
+      defaultChannel: "",
+      channelId: "",
+      channelPassword: "",
+      autoStart: false,
+      serverProtocol: "",
+      ts6ApiKey: "",
+      serverPassword: "",
+    });
+    // Out-of-range volume is clamped; an unknown play mode is ignored (not stored).
+    botDb.saveVolume("bot-v", 250);
+    expect(botDb.getPlayerSettings("bot-v").volume).toBe(100);
+    botDb.saveVolume("bot-v", -10);
+    expect(botDb.getPlayerSettings("bot-v").volume).toBe(0);
+    botDb.savePlayMode("bot-v", "bogus");
+    expect(botDb.getPlayerSettings("bot-v").playMode).toBe("seq");
+  });
+
+  it("migrates volume + play_mode columns onto a legacy bot_instances table (#125)", () => {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-mig-"));
+    const p = join(dir, "legacy.db");
+    // Build a minimal pre-#125 bot_instances table (no volume/play_mode columns).
+    const legacy = createDatabase(p);
+    legacy.db.exec("DROP TABLE bot_instances");
+    legacy.db.exec(`CREATE TABLE bot_instances (
+      id TEXT PRIMARY KEY, name TEXT NOT NULL, serverAddress TEXT NOT NULL,
+      serverPort INTEGER NOT NULL, nickname TEXT NOT NULL, defaultChannel TEXT NOT NULL,
+      channelId TEXT NOT NULL DEFAULT '', channelPassword TEXT NOT NULL,
+      autoStart INTEGER NOT NULL DEFAULT 0, serverProtocol TEXT NOT NULL DEFAULT '',
+      ts6ApiKey TEXT NOT NULL DEFAULT '', serverPassword TEXT NOT NULL DEFAULT '', identity TEXT
+    )`);
+    legacy.db
+      .prepare("INSERT INTO bot_instances (id, name, serverAddress, serverPort, nickname, defaultChannel, channelPassword) VALUES (?, 'B', 'x', 9987, 'n', '', '')")
+      .run("legacy-bot");
+    legacy.close();
+
+    // Reopen → migrateSchema adds the columns; the old row gets the defaults.
+    const reopened = createDatabase(p);
+    const cols = (reopened.db.prepare("PRAGMA table_info(bot_instances)").all() as Array<{ name: string }>).map((c) => c.name);
+    expect(cols).toContain("volume");
+    expect(cols).toContain("play_mode");
+    expect(reopened.getPlayerSettings("legacy-bot")).toEqual({ volume: 75, playMode: "seq" });
+    reopened.close();
+    rmSync(dir, { recursive: true, force: true });
+  });
+
+  it("persists and clears customAvatarPath on a bot instance", () => {
+    const inst = {
+      id: "bot-1",
+      name: "B",
+      serverAddress: "x",
+      serverPort: 9987,
+      nickname: "n",
+      defaultChannel: "",
+      channelId: "",
+      channelPassword: "",
+      autoStart: false,
+      serverProtocol: "",
+      ts6ApiKey: "",
+      serverPassword: "",
+    };
+    botDb.saveBotInstance(inst);
+    expect(botDb.getCustomAvatarPath("bot-1")).toBeNull();
+    botDb.setCustomAvatarPath("bot-1", "avatars/bot-1.png");
+    expect(botDb.getCustomAvatarPath("bot-1")).toBe("avatars/bot-1.png");
+    botDb.setCustomAvatarPath("bot-1", null);
+    expect(botDb.getCustomAvatarPath("bot-1")).toBeNull();
+  });
+
+  const sq = (id: string) => ({
+    id,
+    name: id,
+    artist: "",
+    album: "",
+    platform: "netease" as const,
+    coverUrl: "",
+    duration: 1,
+  });
+
+  describe("saved_queues", () => {
+    it("upserts by (ownerId, name) and returns songs", () => {
+      botDb.saveQueue("u1", "night", [sq("a"), sq("b")]);
+      const again = botDb.saveQueue("u1", "night", [sq("c")]); // overwrite
+      expect(again.songCount).toBe(1);
+      expect(botDb.listSavedQueues("u1", false)).toHaveLength(1);
+      const full = botDb.getSavedQueue(again.id)!;
+      expect(full.songs.map((s) => s.id)).toEqual(["c"]);
+    });
+
+    it("strips url before persisting", () => {
+      const saved = botDb.saveQueue("u1", "x", [
+        { ...sq("a"), url: "http://example.com/a.mp3" } as never,
+      ]);
+      const full = botDb.getSavedQueue(saved.id)!;
+      expect((full.songs[0] as { url?: string }).url).toBeUndefined();
+    });
+
+    it("lists own + shared when includeShared, own-only otherwise", () => {
+      botDb.saveQueue("u1", "mine", [sq("a")]);
+      botDb.saveQueue(SHARED_QUEUE_OWNER, "party", [sq("b")]);
+      expect(botDb.listSavedQueues("u1", false).map((q) => q.name)).toEqual(["mine"]);
+      expect(
+        botDb.listSavedQueues("u1", true).map((q) => q.name).sort(),
+      ).toEqual(["mine", "party"]);
+    });
+
+    it("caps songs at 1000 and queues at 50", () => {
+      expect(() =>
+        botDb.saveQueue("u1", "big", Array.from({ length: 1001 }, (_, i) => sq("s" + i))),
+      ).toThrow(/1000/);
+      for (let i = 0; i < 50; i++) botDb.saveQueue("u1", "q" + i, [sq("a")]);
+      expect(() => botDb.saveQueue("u1", "q50", [sq("a")])).toThrow(/50/);
+      // Overwriting an existing name is always allowed despite the cap.
+      expect(() => botDb.saveQueue("u1", "q0", [sq("z")])).not.toThrow();
+    });
+
+    it("deletes and degrades a corrupt blob to empty", () => {
+      const q = botDb.saveQueue("u1", "x", [sq("a")]);
+      botDb.db.prepare("UPDATE saved_queues SET songs='not json' WHERE id=?").run(q.id);
+      expect(botDb.getSavedQueue(q.id)!.songs).toEqual([]);
+      expect(botDb.deleteSavedQueue(q.id)).toBe(true);
+      expect(botDb.getSavedQueue(q.id)).toBeNull();
+      expect(botDb.deleteSavedQueue(q.id)).toBe(false); // already gone
+    });
+  });
+
+  describe("queue_state", () => {
+    it("upserts, reads back, and clears per bot", () => {
+      botDb.saveQueueState({ botId: "b1", songs: [sq("a")], currentIndex: 0, mode: "loop", isFmMode: true, fmPlatform: "netease" });
+      botDb.saveQueueState({ botId: "b1", songs: [sq("a"), sq("b")], currentIndex: 1, mode: "seq", isFmMode: false, fmPlatform: "" });
+      const st = botDb.getQueueState("b1")!;
+      expect(st.songs.map((s) => s.id)).toEqual(["a", "b"]);
+      expect(st.currentIndex).toBe(1);
+      expect(st.mode).toBe("seq");
+      expect(st.isFmMode).toBe(false);
+      botDb.clearQueueState("b1");
+      expect(botDb.getQueueState("b1")).toBeNull();
+    });
+
+    it("round-trips FM flags and degrades a corrupt blob", () => {
+      botDb.saveQueueState({ botId: "b2", songs: [sq("a")], currentIndex: 0, mode: "random", isFmMode: true, fmPlatform: "qq" });
+      const st = botDb.getQueueState("b2")!;
+      expect(st.isFmMode).toBe(true);
+      expect(st.fmPlatform).toBe("qq");
+      botDb.db.prepare("UPDATE queue_state SET songs='{' WHERE botId=?").run("b2");
+      expect(botDb.getQueueState("b2")!.songs).toEqual([]);
+    });
+  });
+});
+
+describe("guest principal migration", () => {
+  it("creates exactly one reserved guest row, idempotently", () => {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-db-"));
+    const p = join(dir, "t.db");
+    const a = createDatabase(p); a.db.close();
+    const b = createDatabase(p); // run again — must not duplicate
+    const row = b.db.prepare("SELECT id, role FROM users WHERE id = ?").get(GUEST_USER_ID) as { id: string; role: string } | undefined;
+    expect(row?.role).toBe("guest");
+    const n = (b.db.prepare("SELECT COUNT(*) AS n FROM users WHERE role='guest'").get() as { n: number }).n;
+    expect(n).toBe(1);
+    b.db.close();
+    rmSync(dir, { recursive: true, force: true });
+  });
+
+  it("guest row does not break first-run detection (countUsers excludes it)", () => {
+    const dir = mkdtempSync(join(tmpdir(), "tsmb-db2-"));
+    const p = join(dir, "t.db");
+    const d = createDatabase(p);
+    const users = createUserStore(d.db);
+    expect(users.countUsers()).toBe(0); // guest excluded → still needs setup
+    d.db.close();
+    rmSync(dir, { recursive: true, force: true });
+  });
 });

src/data/database.ts

@@ -1,4 +1,46 @@
 import Database from "better-sqlite3";
+import { CAPABILITIES, BOTS_ALL } from "./permissions.js";
+import { GUEST_USER_ID, GUEST_USERNAME } from "./users.js";
+import type { QueuedSong } from "../audio/queue.js";
+
+/**
+ * Reserved owner id for chat-saved / opt-in-shared queues. A `__`-bracketed
+ * literal can never collide with a real WebUI user id (UUIDs), so it cleanly
+ * partitions "shared" saved queues from per-user private ones (issue #119).
+ */
+export const SHARED_QUEUE_OWNER = "__shared__";
+/** Cap per owner (private user OR the shared bucket). */
+export const MAX_SAVED_QUEUES = 50;
+/** Cap per saved queue / persisted live-queue snapshot. */
+export const MAX_QUEUE_SONGS = 1000;
+
+/** A stored song is a QueuedSong minus the lazily-resolved `url`. */
+export type StoredSong = Omit<QueuedSong, "url">;
+
+/** Saved-queue row without the (potentially large) songs blob — for list views. */
+export interface SavedQueueMeta {
+  id: number;
+  ownerId: string;
+  name: string;
+  songCount: number;
+  createdAt: string;
+  updatedAt: string;
+}
+
+/** Full saved queue, including its songs. */
+export interface SavedQueue extends SavedQueueMeta {
+  songs: StoredSong[];
+}
+
+/** One-row-per-bot persisted live-queue state (Feature 2, auto-restore). */
+export interface QueueStateRow {
+  botId: string;
+  songs: StoredSong[];
+  currentIndex: number;
+  mode: string;
+  isFmMode: boolean;
+  fmPlatform: string;
+}
 
 export interface PlayHistoryEntry {
   botId: string;
@@ -6,8 +48,9 @@ export interface PlayHistoryEntry {
   songName: string;
   artist: string;
   album: string;
-  platform: "netease" | "qq" | "bilibili";
+  platform: "netease" | "qq" | "bilibili" | "youtube" | "local" | "kugou" | "spotify" | "jellyfin";
   coverUrl: string;
+  requestedBy?: string;
 }
 
 export interface PlayHistoryRecord extends PlayHistoryEntry {
@@ -22,11 +65,67 @@ export interface BotInstance {
   serverPort: number;
   nickname: string;
   defaultChannel: string;
+  channelId: string;
   channelPassword: string;
   autoStart: boolean;
+  /** "ts3" | "ts6" | "" (empty = auto-detect) */
+  serverProtocol: string;
+  /** API key for TS6 HTTP Query */
+  ts6ApiKey: string;
+  /** Password to join the TS server (server password) */
+  serverPassword: string;
   identity?: string;
 }
 
+export interface ProfileConfig {
+  avatarEnabled: boolean;
+  descriptionEnabled: boolean;
+  nicknameEnabled: boolean;
+  awayStatusEnabled: boolean;
+  channelDescEnabled: boolean;
+  nowPlayingMsgEnabled: boolean;
+}
+
+export const DEFAULT_PROFILE_CONFIG: ProfileConfig = {
+  avatarEnabled: true,
+  descriptionEnabled: true,
+  nicknameEnabled: true,
+  awayStatusEnabled: true,
+  channelDescEnabled: true,
+  nowPlayingMsgEnabled: true,
+};
+
+/**
+ * Per-bot player settings persisted across restarts (#125): the playback volume
+ * and play mode. These reset to defaults on process restart when kept only in
+ * memory (AudioPlayer/PlayQueue), so they are stored on the bot_instances row —
+ * exactly like the per-bot profile flags — and restored when the bot is (re)built.
+ */
+export interface PlayerSettings {
+  /** 0-100. */
+  volume: number;
+  /** PlayMode string: "seq" | "loop" | "random" | "rloop". */
+  playMode: string;
+}
+
+const PLAY_MODES = new Set(["seq", "loop", "random", "rloop"]);
+
+export const DEFAULT_PLAYER_SETTINGS: PlayerSettings = {
+  volume: 75,
+  playMode: "seq",
+};
+
+export interface FavoritePlaylist {
+  id: number;
+  userId: string;
+  platform: string;
+  playlistId: string;
+  name: string;
+  coverUrl: string;
+  songCount: number;
+  createdAt: string;
+}
+
 export interface BotDatabase {
   db: Database.Database;
   addPlayHistory(entry: PlayHistoryEntry): void;
@@ -34,16 +133,85 @@ export interface BotDatabase {
   saveBotInstance(instance: BotInstance): void;
   getBotInstances(): BotInstance[];
   deleteBotInstance(id: string): boolean;
+  getProfileConfig(botId: string): ProfileConfig;
+  saveProfileConfig(botId: string, config: ProfileConfig): void;
+  getPlayerSettings(botId: string): PlayerSettings;
+  saveVolume(botId: string, volume: number): void;
+  savePlayMode(botId: string, playMode: string): void;
+  getCustomAvatarPath(botId: string): string | null;
+  setCustomAvatarPath(botId: string, path: string | null): void;
+  addFavorite(userId: string, playlist: { platform: string; playlistId: string; name: string; coverUrl: string; songCount: number }): void;
+  removeFavorite(userId: string, playlistId: string, platform: string): boolean;
+  getFavorites(userId: string): FavoritePlaylist[];
+  isFavorited(userId: string, playlistId: string, platform: string): boolean;
+  // Saved queues (Feature 1) — upsert by (ownerId, name), capped.
+  saveQueue(ownerId: string, name: string, songs: StoredSong[]): SavedQueue;
+  listSavedQueues(ownerId: string, includeShared: boolean): SavedQueueMeta[];
+  getSavedQueue(id: number): SavedQueue | null;
+  deleteSavedQueue(id: number): boolean;
+  // Live-queue persistence (Feature 2) — one row per bot.
+  saveQueueState(state: QueueStateRow): void;
+  getQueueState(botId: string): QueueStateRow | null;
+  clearQueueState(botId: string): void;
   close(): void;
 }
 
 function migrateSchema(db: Database.Database): void {
-  // Add identity column if it doesn't exist (migration for existing databases)
   const columns = db.prepare("PRAGMA table_info(bot_instances)").all() as Array<{ name: string }>;
-  const hasIdentity = columns.some((c) => c.name === "identity");
-  if (!hasIdentity) {
+  const names = columns.map((c) => c.name);
+  if (!names.includes("identity")) {
     db.exec("ALTER TABLE bot_instances ADD COLUMN identity TEXT");
   }
+  if (!names.includes("serverProtocol")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN serverProtocol TEXT NOT NULL DEFAULT ''");
+  }
+  if (!names.includes("ts6ApiKey")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN ts6ApiKey TEXT NOT NULL DEFAULT ''");
+  }
+  if (!names.includes("serverPassword")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN serverPassword TEXT NOT NULL DEFAULT ''");
+  }
+  if (!names.includes("channelId")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN channelId TEXT NOT NULL DEFAULT ''");
+  }
+  // Profile feature flags
+  const profileCols = [
+    "profile_avatar_enabled",
+    "profile_description_enabled",
+    "profile_nickname_enabled",
+    "profile_away_enabled",
+    "profile_channel_desc_enabled",
+    "profile_now_playing_enabled",
+  ];
+  for (const col of profileCols) {
+    if (!names.includes(col)) {
+      db.exec(`ALTER TABLE bot_instances ADD COLUMN ${col} INTEGER NOT NULL DEFAULT 1`);
+    }
+  }
+  if (!names.includes("custom_avatar_path")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN custom_avatar_path TEXT");
+  }
+  // Per-bot persisted player settings (#125): volume + play mode. Defaults match
+  // AudioPlayer/PlayQueue's in-memory defaults so pre-existing rows keep behaving
+  // exactly as before until the user changes them.
+  if (!names.includes("volume")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN volume INTEGER NOT NULL DEFAULT 75");
+  }
+  if (!names.includes("play_mode")) {
+    db.exec("ALTER TABLE bot_instances ADD COLUMN play_mode TEXT NOT NULL DEFAULT 'seq'");
+  }
+
+  const userColumns = db.prepare("PRAGMA table_info(users)").all() as Array<{ name: string }>;
+  const userColNames = userColumns.map((c) => c.name);
+  if (!userColNames.includes("role")) {
+    db.exec("ALTER TABLE users ADD COLUMN role TEXT NOT NULL DEFAULT 'admin'");
+  }
+
+  const historyColumns = db.prepare("PRAGMA table_info(play_history)").all() as Array<{ name: string }>;
+  const historyColNames = historyColumns.map((c) => c.name);
+  if (!historyColNames.includes("requestedBy")) {
+    db.exec("ALTER TABLE play_history ADD COLUMN requestedBy TEXT NOT NULL DEFAULT ''");
+  }
 }
 
 function initTables(db: Database.Database): void {
@@ -57,6 +225,7 @@ function initTables(db: Database.Database): void {
       album TEXT NOT NULL,
       platform TEXT NOT NULL,
       coverUrl TEXT NOT NULL,
+      requestedBy TEXT NOT NULL DEFAULT '',
       playedAt TEXT NOT NULL DEFAULT (datetime('now'))
     );
 
@@ -67,22 +236,150 @@ function initTables(db: Database.Database): void {
       serverPort INTEGER NOT NULL,
       nickname TEXT NOT NULL,
       defaultChannel TEXT NOT NULL,
+      channelId TEXT NOT NULL DEFAULT '',
       channelPassword TEXT NOT NULL,
       autoStart INTEGER NOT NULL DEFAULT 0,
+      serverProtocol TEXT NOT NULL DEFAULT '',
+      ts6ApiKey TEXT NOT NULL DEFAULT '',
+      serverPassword TEXT NOT NULL DEFAULT '',
+      volume INTEGER NOT NULL DEFAULT 75,
+      play_mode TEXT NOT NULL DEFAULT 'seq',
       identity TEXT
     );
+
+    CREATE TABLE IF NOT EXISTS users (
+      id TEXT PRIMARY KEY,
+      username TEXT NOT NULL UNIQUE COLLATE NOCASE,
+      passwordHash TEXT NOT NULL,
+      createdAt INTEGER NOT NULL,
+      updatedAt INTEGER NOT NULL,
+      role TEXT NOT NULL DEFAULT 'admin'
+    );
+
+    CREATE TABLE IF NOT EXISTS sessions (
+      id TEXT PRIMARY KEY,
+      userId TEXT NOT NULL,
+      createdAt INTEGER NOT NULL,
+      expiresAt INTEGER NOT NULL,
+      lastSeenAt INTEGER NOT NULL,
+      FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+    );
+
+    CREATE INDEX IF NOT EXISTS idx_sessions_userId ON sessions(userId);
+    CREATE INDEX IF NOT EXISTS idx_sessions_expiresAt ON sessions(expiresAt);
+
+    CREATE TABLE IF NOT EXISTS user_audit (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      timestamp INTEGER NOT NULL,
+      actorId TEXT,
+      actorUsername TEXT,
+      targetUserId TEXT,
+      targetUsername TEXT,
+      action TEXT NOT NULL
+    );
+    CREATE INDEX IF NOT EXISTS idx_user_audit_timestamp ON user_audit(timestamp DESC);
+
+    CREATE TABLE IF NOT EXISTS favorite_playlists (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      userId TEXT NOT NULL,
+      platform TEXT NOT NULL,
+      playlistId TEXT NOT NULL,
+      name TEXT NOT NULL,
+      coverUrl TEXT NOT NULL DEFAULT '',
+      songCount INTEGER NOT NULL DEFAULT 0,
+      createdAt TEXT NOT NULL DEFAULT (datetime('now')),
+      FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE,
+      UNIQUE(userId, platform, playlistId)
+    );
+    CREATE INDEX IF NOT EXISTS idx_favorites_userId ON favorite_playlists(userId);
+
+    CREATE TABLE IF NOT EXISTS user_permissions (
+      userId     TEXT NOT NULL,
+      permission TEXT NOT NULL,
+      PRIMARY KEY (userId, permission),
+      FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+    );
+    CREATE TABLE IF NOT EXISTS user_bot_access (
+      userId TEXT NOT NULL,
+      botId  TEXT NOT NULL,
+      PRIMARY KEY (userId, botId),
+      FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+    );
+    CREATE INDEX IF NOT EXISTS idx_user_bot_access_userId ON user_bot_access(userId);
+
+    CREATE TABLE IF NOT EXISTS saved_queues (
+      id        INTEGER PRIMARY KEY AUTOINCREMENT,
+      ownerId   TEXT NOT NULL,
+      name      TEXT NOT NULL,
+      songs     TEXT NOT NULL,
+      songCount INTEGER NOT NULL DEFAULT 0,
+      createdAt TEXT NOT NULL DEFAULT (datetime('now')),
+      updatedAt TEXT NOT NULL DEFAULT (datetime('now')),
+      UNIQUE(ownerId, name)
+    );
+    CREATE INDEX IF NOT EXISTS idx_saved_queues_ownerId ON saved_queues(ownerId);
+
+    CREATE TABLE IF NOT EXISTS queue_state (
+      botId        TEXT PRIMARY KEY,
+      songs        TEXT NOT NULL,
+      currentIndex INTEGER NOT NULL,
+      mode         TEXT NOT NULL,
+      isFmMode     INTEGER NOT NULL DEFAULT 0,
+      fmPlatform   TEXT NOT NULL DEFAULT '',
+      updatedAt    TEXT NOT NULL DEFAULT (datetime('now'))
+    );
   `);
 }
 
+/**
+ * One-time backfill: existing `member` users created before the
+ * account-permissions feature are granted full access (all 5 capabilities +
+ * the `bots.all` marker), exactly once per database. Admins are skipped (they
+ * bypass permission checks). New members created after this runs are not
+ * affected — they get the basic tier via POST /api/users. A marker row in
+ * `schema_meta` makes this idempotent.
+ */
+export function backfillMemberPermissions(db: Database.Database): void {
+  db.exec(`CREATE TABLE IF NOT EXISTS schema_meta (key TEXT PRIMARY KEY, value TEXT)`);
+  const done = db.prepare("SELECT value FROM schema_meta WHERE key = 'perm_backfill_done'").get();
+  if (done) return;
+  const members = db.prepare("SELECT id FROM users WHERE role = 'member'").all() as { id: string }[];
+  const insCap = db.prepare("INSERT OR IGNORE INTO user_permissions (userId, permission) VALUES (?, ?)");
+  const tokens = [...CAPABILITIES, BOTS_ALL];
+  const tx = db.transaction(() => {
+    for (const m of members) {
+      for (const t of tokens) insCap.run(m.id, t);
+    }
+    db.prepare("INSERT INTO schema_meta (key, value) VALUES ('perm_backfill_done', ?)").run(String(members.length));
+  });
+  tx();
+}
+
+/**
+ * Ensure the reserved guest principal exists. Idempotent via the PK on
+ * `users.id`. This row only backs login-less guest sessions; it is excluded
+ * from countUsers()/listUsers() so it never interferes with first-run setup
+ * or the user-management UI, and holds an unusable password hash.
+ */
+export function ensureGuestUser(db: Database.Database): void {
+  const now = Date.now();
+  db.prepare(
+    "INSERT OR IGNORE INTO users (id, username, passwordHash, createdAt, updatedAt, role) VALUES (?, ?, '!', ?, ?, 'guest')"
+  ).run(GUEST_USER_ID, GUEST_USERNAME, now, now);
+}
+
 export function createDatabase(dbPath: string): BotDatabase {
   const db = new Database(dbPath);
   db.pragma("journal_mode = WAL");
+  db.pragma("foreign_keys = ON");
   initTables(db);
   migrateSchema(db);
+  backfillMemberPermissions(db);
+  ensureGuestUser(db);
 
   const insertHistory = db.prepare(`
-    INSERT INTO play_history (botId, songId, songName, artist, album, platform, coverUrl)
-    VALUES (@botId, @songId, @songName, @artist, @album, @platform, @coverUrl)
+    INSERT INTO play_history (botId, songId, songName, artist, album, platform, coverUrl, requestedBy)
+    VALUES (@botId, @songId, @songName, @artist, @album, @platform, @coverUrl, @requestedBy)
   `);
 
   const selectHistory = db.prepare(`
@@ -90,16 +387,20 @@ export function createDatabase(dbPath: string): BotDatabase {
   `);
 
   const upsertInstance = db.prepare(`
-    INSERT INTO bot_instances (id, name, serverAddress, serverPort, nickname, defaultChannel, channelPassword, autoStart, identity)
-    VALUES (@id, @name, @serverAddress, @serverPort, @nickname, @defaultChannel, @channelPassword, @autoStart, @identity)
+    INSERT INTO bot_instances (id, name, serverAddress, serverPort, nickname, defaultChannel, channelId, channelPassword, autoStart, serverProtocol, ts6ApiKey, serverPassword, identity)
+    VALUES (@id, @name, @serverAddress, @serverPort, @nickname, @defaultChannel, @channelId, @channelPassword, @autoStart, @serverProtocol, @ts6ApiKey, @serverPassword, @identity)
     ON CONFLICT(id) DO UPDATE SET
       name = excluded.name,
       serverAddress = excluded.serverAddress,
       serverPort = excluded.serverPort,
       nickname = excluded.nickname,
       defaultChannel = excluded.defaultChannel,
+      channelId = excluded.channelId,
       channelPassword = excluded.channelPassword,
       autoStart = excluded.autoStart,
+      serverProtocol = excluded.serverProtocol,
+      ts6ApiKey = excluded.ts6ApiKey,
+      serverPassword = excluded.serverPassword,
       identity = excluded.identity
   `);
 
@@ -107,11 +408,117 @@ export function createDatabase(dbPath: string): BotDatabase {
 
   const deleteInstance = db.prepare(`DELETE FROM bot_instances WHERE id = ?`);
 
+  const selectProfileConfig = db.prepare(`
+    SELECT profile_avatar_enabled, profile_description_enabled,
+           profile_nickname_enabled, profile_away_enabled,
+           profile_channel_desc_enabled, profile_now_playing_enabled
+    FROM bot_instances WHERE id = ?
+  `);
+
+  const updateProfileConfig = db.prepare(`
+    UPDATE bot_instances SET
+      profile_avatar_enabled = @avatar,
+      profile_description_enabled = @description,
+      profile_nickname_enabled = @nickname,
+      profile_away_enabled = @away,
+      profile_channel_desc_enabled = @channelDesc,
+      profile_now_playing_enabled = @nowPlaying
+    WHERE id = @id
+  `);
+
+  const selectPlayerSettings = db.prepare(
+    `SELECT volume, play_mode FROM bot_instances WHERE id = ?`,
+  );
+  const updateVolume = db.prepare(`UPDATE bot_instances SET volume = ? WHERE id = ?`);
+  const updatePlayMode = db.prepare(`UPDATE bot_instances SET play_mode = ? WHERE id = ?`);
+
+  const selectCustomAvatar = db.prepare(`SELECT custom_avatar_path FROM bot_instances WHERE id = ?`);
+  const updateCustomAvatar = db.prepare(`UPDATE bot_instances SET custom_avatar_path = ? WHERE id = ?`);
+
+  const insertFavorite = db.prepare(`
+    INSERT INTO favorite_playlists (userId, platform, playlistId, name, coverUrl, songCount)
+    VALUES (@userId, @platform, @playlistId, @name, @coverUrl, @songCount)
+  `);
+
+  const deleteFavorite = db.prepare(`
+    DELETE FROM favorite_playlists WHERE userId = ? AND playlistId = ? AND platform = ?
+  `);
+
+  const selectFavorites = db.prepare(`
+    SELECT id, userId, platform, playlistId, name, coverUrl, songCount, createdAt
+    FROM favorite_playlists WHERE userId = ? ORDER BY createdAt DESC
+  `);
+
+  const checkFavorited = db.prepare(`
+    SELECT 1 FROM favorite_playlists WHERE userId = ? AND playlistId = ? AND platform = ?
+  `);
+
+  // A corrupt/hand-edited songs blob must never throw into a route or the
+  // restore path — degrade to an empty list instead.
+  const parseSongs = (raw: string): StoredSong[] => {
+    try {
+      const v = JSON.parse(raw);
+      return Array.isArray(v) ? (v as StoredSong[]) : [];
+    } catch {
+      return [];
+    }
+  };
+  const rowToSavedMeta = (r: {
+    id: number; ownerId: string; name: string; songCount: number; createdAt: string; updatedAt: string;
+  }): SavedQueueMeta => ({
+    id: r.id,
+    ownerId: r.ownerId,
+    name: r.name,
+    songCount: r.songCount,
+    createdAt: r.createdAt,
+    updatedAt: r.updatedAt,
+  });
+
+  const upsertSavedQueue = db.prepare(`
+    INSERT INTO saved_queues (ownerId, name, songs, songCount)
+    VALUES (@ownerId, @name, @songs, @songCount)
+    ON CONFLICT(ownerId, name) DO UPDATE SET
+      songs = excluded.songs,
+      songCount = excluded.songCount,
+      updatedAt = datetime('now')
+  `);
+  const selectSavedQueueByOwnerName = db.prepare(
+    "SELECT * FROM saved_queues WHERE ownerId = ? AND name = ?",
+  );
+  const selectSavedQueueIdByOwnerName = db.prepare(
+    "SELECT id FROM saved_queues WHERE ownerId = ? AND name = ?",
+  );
+  const countSavedQueues = db.prepare(
+    "SELECT COUNT(*) AS c FROM saved_queues WHERE ownerId = ?",
+  );
+  const listSavedQueuesOwn = db.prepare(
+    "SELECT id, ownerId, name, songCount, createdAt, updatedAt FROM saved_queues WHERE ownerId = ? ORDER BY updatedAt DESC",
+  );
+  const listSavedQueuesShared = db.prepare(
+    "SELECT id, ownerId, name, songCount, createdAt, updatedAt FROM saved_queues WHERE ownerId = ? OR ownerId = ? ORDER BY updatedAt DESC",
+  );
+  const selectSavedQueueById = db.prepare("SELECT * FROM saved_queues WHERE id = ?");
+  const deleteSavedQueueById = db.prepare("DELETE FROM saved_queues WHERE id = ?");
+
+  const upsertQueueState = db.prepare(`
+    INSERT INTO queue_state (botId, songs, currentIndex, mode, isFmMode, fmPlatform, updatedAt)
+    VALUES (@botId, @songs, @currentIndex, @mode, @isFmMode, @fmPlatform, datetime('now'))
+    ON CONFLICT(botId) DO UPDATE SET
+      songs = excluded.songs,
+      currentIndex = excluded.currentIndex,
+      mode = excluded.mode,
+      isFmMode = excluded.isFmMode,
+      fmPlatform = excluded.fmPlatform,
+      updatedAt = datetime('now')
+  `);
+  const selectQueueState = db.prepare("SELECT * FROM queue_state WHERE botId = ?");
+  const deleteQueueState = db.prepare("DELETE FROM queue_state WHERE botId = ?");
+
   return {
     db,
 
     addPlayHistory(record) {
-      insertHistory.run(record);
+      insertHistory.run({ ...record, requestedBy: record.requestedBy ?? "" });
     },
 
     getPlayHistory(botId, limit) {
@@ -133,6 +540,10 @@ export function createDatabase(dbPath: string): BotDatabase {
       return rows.map((r) => ({
         ...r,
         autoStart: r.autoStart === 1,
+        serverProtocol: r.serverProtocol ?? "",
+        ts6ApiKey: r.ts6ApiKey ?? "",
+        serverPassword: r.serverPassword ?? "",
+        channelId: r.channelId ?? "",
         identity: r.identity ?? undefined,
       }));
     },
@@ -142,6 +553,166 @@ export function createDatabase(dbPath: string): BotDatabase {
       return result.changes > 0;
     },
 
+    getProfileConfig(botId) {
+      const row = selectProfileConfig.get(botId) as Record<string, number> | undefined;
+      if (!row) return { ...DEFAULT_PROFILE_CONFIG };
+      return {
+        avatarEnabled: row.profile_avatar_enabled === 1,
+        descriptionEnabled: row.profile_description_enabled === 1,
+        nicknameEnabled: row.profile_nickname_enabled === 1,
+        awayStatusEnabled: row.profile_away_enabled === 1,
+        channelDescEnabled: row.profile_channel_desc_enabled === 1,
+        nowPlayingMsgEnabled: row.profile_now_playing_enabled === 1,
+      };
+    },
+
+    saveProfileConfig(botId, config) {
+      updateProfileConfig.run({
+        id: botId,
+        avatar: config.avatarEnabled ? 1 : 0,
+        description: config.descriptionEnabled ? 1 : 0,
+        nickname: config.nicknameEnabled ? 1 : 0,
+        away: config.awayStatusEnabled ? 1 : 0,
+        channelDesc: config.channelDescEnabled ? 1 : 0,
+        nowPlaying: config.nowPlayingMsgEnabled ? 1 : 0,
+      });
+    },
+
+    getPlayerSettings(botId) {
+      const row = selectPlayerSettings.get(botId) as
+        | { volume: number | null; play_mode: string | null }
+        | undefined;
+      if (!row) return { ...DEFAULT_PLAYER_SETTINGS };
+      // Coerce/validate: clamp volume to 0-100 and fall back to defaults for any
+      // NULL / out-of-range / unknown value (a hand-edited DB must never feed a
+      // bad value into AudioPlayer.setVolume / PlayQueue.setMode).
+      const rawVol = typeof row.volume === "number" ? row.volume : DEFAULT_PLAYER_SETTINGS.volume;
+      const volume = Number.isFinite(rawVol)
+        ? Math.max(0, Math.min(100, Math.round(rawVol)))
+        : DEFAULT_PLAYER_SETTINGS.volume;
+      const playMode =
+        typeof row.play_mode === "string" && PLAY_MODES.has(row.play_mode)
+          ? row.play_mode
+          : DEFAULT_PLAYER_SETTINGS.playMode;
+      return { volume, playMode };
+    },
+
+    saveVolume(botId, volume) {
+      const clamped = Math.max(0, Math.min(100, Math.round(volume)));
+      updateVolume.run(clamped, botId);
+    },
+
+    savePlayMode(botId, playMode) {
+      // Persist only recognized modes so a bad value can never poison the row.
+      if (!PLAY_MODES.has(playMode)) return;
+      updatePlayMode.run(playMode, botId);
+    },
+
+    getCustomAvatarPath(botId) {
+      const row = selectCustomAvatar.get(botId) as { custom_avatar_path: string | null } | undefined;
+      return row?.custom_avatar_path ?? null;
+    },
+    setCustomAvatarPath(botId, path) {
+      updateCustomAvatar.run(path, botId);
+    },
+
+    addFavorite(userId, playlist) {
+      insertFavorite.run({ userId, ...playlist });
+    },
+
+    removeFavorite(userId, playlistId, platform) {
+      const result = deleteFavorite.run(userId, playlistId, platform);
+      return result.changes > 0;
+    },
+
+    getFavorites(userId) {
+      return selectFavorites.all(userId) as FavoritePlaylist[];
+    },
+
+    isFavorited(userId, playlistId, platform) {
+      const row = checkFavorited.get(userId, playlistId, platform);
+      return row !== undefined;
+    },
+
+    saveQueue(ownerId, name, songs) {
+      if (songs.length > MAX_QUEUE_SONGS) {
+        throw new Error(`保存失败：歌曲数量超过上限 ${MAX_QUEUE_SONGS}`);
+      }
+      // Strip any lazily-resolved url before persisting.
+      const stripped: StoredSong[] = songs.map((s) => {
+        const { url: _url, ...rest } = s as QueuedSong;
+        return rest;
+      });
+      // Enforce the per-owner cap only for a NEW name (an overwrite of an
+      // existing saved queue must always be allowed).
+      const existing = selectSavedQueueIdByOwnerName.get(ownerId, name) as
+        | { id: number }
+        | undefined;
+      if (!existing) {
+        const { c } = countSavedQueues.get(ownerId) as { c: number };
+        if (c >= MAX_SAVED_QUEUES) {
+          throw new Error(`保存失败：已保存队列数量超过上限 ${MAX_SAVED_QUEUES}`);
+        }
+      }
+      upsertSavedQueue.run({
+        ownerId,
+        name,
+        songs: JSON.stringify(stripped),
+        songCount: stripped.length,
+      });
+      const row = selectSavedQueueByOwnerName.get(ownerId, name) as SavedQueueMeta;
+      return { ...rowToSavedMeta(row), songs: stripped };
+    },
+
+    listSavedQueues(ownerId, includeShared) {
+      const rows = includeShared
+        ? (listSavedQueuesShared.all(ownerId, SHARED_QUEUE_OWNER) as SavedQueueMeta[])
+        : (listSavedQueuesOwn.all(ownerId) as SavedQueueMeta[]);
+      return rows.map(rowToSavedMeta);
+    },
+
+    getSavedQueue(id) {
+      const row = selectSavedQueueById.get(id) as
+        | (SavedQueueMeta & { songs: string })
+        | undefined;
+      if (!row) return null;
+      return { ...rowToSavedMeta(row), songs: parseSongs(row.songs) };
+    },
+
+    deleteSavedQueue(id) {
+      return deleteSavedQueueById.run(id).changes > 0;
+    },
+
+    saveQueueState(state) {
+      upsertQueueState.run({
+        botId: state.botId,
+        songs: JSON.stringify(state.songs),
+        currentIndex: state.currentIndex,
+        mode: state.mode,
+        isFmMode: state.isFmMode ? 1 : 0,
+        fmPlatform: state.fmPlatform,
+      });
+    },
+
+    getQueueState(botId) {
+      const r = selectQueueState.get(botId) as
+        | { botId: string; songs: string; currentIndex: number; mode: string; isFmMode: number; fmPlatform: string }
+        | undefined;
+      if (!r) return null;
+      return {
+        botId: r.botId,
+        songs: parseSongs(r.songs),
+        currentIndex: r.currentIndex,
+        mode: r.mode,
+        isFmMode: r.isFmMode === 1,
+        fmPlatform: r.fmPlatform,
+      };
+    },
+
+    clearQueueState(botId) {
+      deleteQueueState.run(botId);
+    },
+
     close() {
       db.close();
     },

src/data/permissions-migration.test.ts

@@ -0,0 +1,58 @@
+import { describe, it, expect, afterEach } from "vitest";
+import fs from "node:fs";
+import path from "node:path";
+import os from "node:os";
+import { createDatabase, backfillMemberPermissions, type BotDatabase } from "./database.js";
+import { createPermissionStore, CAPABILITIES } from "./permissions.js";
+
+describe("backfillMemberPermissions", () => {
+  let dbFile: string;
+  let db: BotDatabase;
+  function fresh() {
+    dbFile = path.join(os.tmpdir(), `mig-${Date.now()}-${Math.random().toString(36).slice(2)}.db`);
+    db = createDatabase(dbFile);
+  }
+  afterEach(() => {
+    db.close();
+    for (const s of ["", "-wal", "-shm"]) {
+      try {
+        fs.rmSync(dbFile + s, { force: true });
+      } catch {}
+    }
+  });
+
+  it("grants existing members full access + bots.all, skips admins, once", () => {
+    fresh();
+    // simulate a pre-feature DB: clear the marker that createDatabase set, add users, no perm rows
+    db.db.prepare("DELETE FROM schema_meta WHERE key = 'perm_backfill_done'").run();
+    const now = Date.now();
+    const ins = db.db.prepare(
+      "INSERT INTO users (id,username,passwordHash,createdAt,updatedAt,role) VALUES (?,?,?,?,?,?)"
+    );
+    ins.run("m1", "mem", "x", now, now, "member");
+    ins.run("a1", "adm", "x", now, now, "admin");
+
+    backfillMemberPermissions(db.db);
+
+    const store = createPermissionStore(db.db);
+    expect(store.getCapabilities("m1").sort()).toEqual([...CAPABILITIES].sort());
+    expect(store.getBotAccess("m1")).toBe("all");
+    expect(store.getCapabilities("a1")).toEqual([]);
+    expect(store.getBotAccess("a1")).toEqual([]);
+  });
+
+  it("is idempotent — running again does not change or re-grant", () => {
+    fresh();
+    db.db.prepare("DELETE FROM schema_meta WHERE key = 'perm_backfill_done'").run();
+    const now = Date.now();
+    db.db
+      .prepare("INSERT INTO users (id,username,passwordHash,createdAt,updatedAt,role) VALUES (?,?,?,?,?,?)")
+      .run("m1", "mem", "x", now, now, "member");
+    backfillMemberPermissions(db.db);
+    // member restricted afterwards
+    createPermissionStore(db.db).setPermissions("m1", { capabilities: [], bots: [] });
+    // second run must NOT re-grant (marker present)
+    backfillMemberPermissions(db.db);
+    expect(createPermissionStore(db.db).getCapabilities("m1")).toEqual([]);
+  });
+});

src/data/permissions.test.ts

@@ -0,0 +1,135 @@
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
+import fs from "node:fs";
+import path from "node:path";
+import os from "node:os";
+import { createDatabase, type BotDatabase } from "./database.js";
+import { createPermissionStore } from "./permissions.js";
+import { CAPABILITIES, BASIC_TIER_CAPABILITIES, resolvePermissionContext } from "./permissions.js";
+
+describe("PermissionStore", () => {
+  let dbFile: string;
+  let db: BotDatabase;
+
+  beforeEach(() => {
+    dbFile = path.join(os.tmpdir(), `perm-test-${Date.now()}-${Math.random().toString(36).slice(2)}.db`);
+    db = createDatabase(dbFile);
+    db.db.prepare(
+      "INSERT INTO users (id, username, passwordHash, createdAt, updatedAt, role) VALUES (?,?,?,?,?,?)"
+    ).run("u1", "alice", "x", Date.now(), Date.now(), "member");
+  });
+
+  afterEach(() => {
+    db.close();
+    try { fs.rmSync(dbFile, { force: true }); } catch {}
+    try { fs.rmSync(dbFile + "-wal", { force: true }); } catch {}
+    try { fs.rmSync(dbFile + "-shm", { force: true }); } catch {}
+  });
+
+  it("exposes the five capability tokens and a basic tier", () => {
+    expect(CAPABILITIES).toEqual([
+      "player.control", "player.queue", "bot.manage", "platform.auth", "quality",
+    ]);
+    expect(BASIC_TIER_CAPABILITIES).toEqual(["player.control", "player.queue"]);
+  });
+
+  it("defaults to no capabilities and no bots", () => {
+    const store = createPermissionStore(db.db);
+    expect(store.getCapabilities("u1")).toEqual([]);
+    expect(store.getBotAccess("u1")).toEqual([]);
+  });
+
+  it("round-trips capabilities and a specific bot list", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control", "quality"], bots: ["botA", "botB"] });
+    expect(store.getCapabilities("u1").sort()).toEqual(["player.control", "quality"]);
+    expect(store.getBotAccess("u1")).toEqual(["botA", "botB"]);
+  });
+
+  it("stores the all-bots flag as 'all'", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control"], bots: "all" });
+    expect(store.getBotAccess("u1")).toBe("all");
+  });
+
+  it("setPermissions replaces prior capabilities and bots", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control"], bots: ["botA"] });
+    store.setPermissions("u1", { capabilities: ["quality"], bots: "all" });
+    expect(store.getCapabilities("u1")).toEqual(["quality"]);
+    expect(store.getBotAccess("u1")).toBe("all");
+  });
+
+  it("ignores unknown capability tokens", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: ["player.control", "bogus" as any], bots: [] });
+    expect(store.getCapabilities("u1")).toEqual(["player.control"]);
+  });
+
+  it("pruneBot removes a bot from every user's allow-list", () => {
+    const store = createPermissionStore(db.db);
+    store.setPermissions("u1", { capabilities: [], bots: ["botA", "botB"] });
+    store.pruneBot("botA");
+    expect(store.getBotAccess("u1")).toEqual(["botB"]);
+  });
+
+  describe("resolvePermissionContext", () => {
+    it("admin gets all capabilities and all bots regardless of stored rows", () => {
+      const store = createPermissionStore(db.db);
+      const ctx = resolvePermissionContext("admin", "u1", store);
+      expect([...ctx.capabilities].sort()).toEqual([...CAPABILITIES].sort());
+      expect(ctx.bots).toBe("all");
+    });
+    it("member reflects stored capabilities + bot access", () => {
+      const store = createPermissionStore(db.db);
+      store.setPermissions("u1", { capabilities: ["player.control"], bots: ["b1"] });
+      const ctx = resolvePermissionContext("member", "u1", store);
+      expect([...ctx.capabilities]).toEqual(["player.control"]);
+      expect(ctx.bots).toEqual(new Set(["b1"]));
+    });
+  });
+});
+
+import { GUEST_PERMISSION_FLAGS } from "./permissions.js";
+
+describe("resolvePermissionContext guest branch", () => {
+  const noStore = {
+    getCapabilities: () => [],
+    getBotAccess: () => [] as string[],
+    setPermissions: () => {},
+    pruneBot: () => {},
+  };
+
+  it("guest has no member capabilities and exposes the guest permissions + bots", () => {
+    const ctx = resolvePermissionContext("guest", "__guest__", noStore, {
+      bots: ["bot1"],
+      permissions: {
+        addToQueue: true, playNext: false, playNow: false,
+        skip: true, transport: false, removeClear: false, playMode: false,
+        playCollection: false,
+      },
+    });
+    expect([...ctx.capabilities]).toEqual([]);
+    expect(ctx.bots).toBeInstanceOf(Set);
+    expect((ctx.bots as Set<string>).has("bot1")).toBe(true);
+    expect(ctx.guest?.addToQueue).toBe(true);
+    expect(ctx.guest?.skip).toBe(true);
+  });
+
+  it("guest with bots:'all' resolves to 'all'", () => {
+    const ctx = resolvePermissionContext("guest", "__guest__", noStore, {
+      bots: "all",
+      permissions: {
+        addToQueue: true, playNext: false, playNow: false,
+        skip: false, transport: false, removeClear: false, playMode: false,
+        playCollection: false,
+      },
+    });
+    expect(ctx.bots).toBe("all");
+  });
+
+  it("exposes the 8 canonical flags", () => {
+    expect([...GUEST_PERMISSION_FLAGS].sort()).toEqual(
+      ["addToQueue", "playCollection", "playMode", "playNext", "playNow", "removeClear", "skip", "transport"].sort()
+    );
+  });
+});

src/data/permissions.ts

@@ -0,0 +1,123 @@
+import type Database from "better-sqlite3";
+
+export const CAPABILITIES = [
+  "player.control",
+  "player.queue",
+  "bot.manage",
+  "platform.auth",
+  "quality",
+] as const;
+export type Capability = (typeof CAPABILITIES)[number];
+
+/** Marker token stored in user_permissions meaning "all bots, incl. future". */
+export const BOTS_ALL = "bots.all";
+
+/** Capabilities granted to a newly-created member by default. */
+export const BASIC_TIER_CAPABILITIES: Capability[] = ["player.control", "player.queue"];
+
+export function isCapability(x: string): x is Capability {
+  return (CAPABILITIES as readonly string[]).includes(x);
+}
+
+export type BotAccess = "all" | string[];
+
+export interface GuestPermissions {
+  addToQueue: boolean;
+  playNext: boolean;
+  playNow: boolean;
+  skip: boolean;
+  transport: boolean;
+  removeClear: boolean;
+  playMode: boolean;
+  /** Load + play an entire playlist/album (clears the queue). Issue #103. */
+  playCollection: boolean;
+}
+
+export const GUEST_PERMISSION_FLAGS = [
+  "addToQueue",
+  "playNext",
+  "playNow",
+  "skip",
+  "transport",
+  "removeClear",
+  "playMode",
+  "playCollection",
+] as const;
+export type GuestFlag = (typeof GUEST_PERMISSION_FLAGS)[number];
+
+export interface PermissionStore {
+  getCapabilities(userId: string): Capability[];
+  getBotAccess(userId: string): BotAccess;
+  setPermissions(userId: string, input: { capabilities: string[]; bots: BotAccess }): void;
+  pruneBot(botId: string): void;
+}
+
+export function createPermissionStore(db: Database.Database): PermissionStore {
+  const selCaps = db.prepare("SELECT permission FROM user_permissions WHERE userId = ?");
+  const delCaps = db.prepare("DELETE FROM user_permissions WHERE userId = ?");
+  const insCap = db.prepare("INSERT OR IGNORE INTO user_permissions (userId, permission) VALUES (?, ?)");
+  const selBots = db.prepare("SELECT botId FROM user_bot_access WHERE userId = ?");
+  const delBots = db.prepare("DELETE FROM user_bot_access WHERE userId = ?");
+  const insBot = db.prepare("INSERT OR IGNORE INTO user_bot_access (userId, botId) VALUES (?, ?)");
+  const pruneBotStmt = db.prepare("DELETE FROM user_bot_access WHERE botId = ?");
+
+  return {
+    getCapabilities(userId) {
+      return (selCaps.all(userId) as { permission: string }[])
+        .map((r) => r.permission)
+        .filter((p): p is Capability => isCapability(p));
+    },
+    getBotAccess(userId) {
+      const all = (selCaps.all(userId) as { permission: string }[]).some((r) => r.permission === BOTS_ALL);
+      if (all) return "all";
+      return (selBots.all(userId) as { botId: string }[]).map((r) => r.botId);
+    },
+    setPermissions(userId, input) {
+      const caps = input.capabilities.filter(isCapability);
+      const tx = db.transaction(() => {
+        delCaps.run(userId);
+        delBots.run(userId);
+        for (const c of caps) insCap.run(userId, c);
+        if (input.bots === "all") {
+          insCap.run(userId, BOTS_ALL);
+        } else {
+          for (const b of input.bots) insBot.run(userId, b);
+        }
+      });
+      tx();
+    },
+    pruneBot(botId) {
+      pruneBotStmt.run(botId);
+    },
+  };
+}
+
+export interface PermissionContext {
+  capabilities: Set<string>;
+  bots: "all" | Set<string>;
+  guest?: GuestPermissions;
+}
+
+export function resolvePermissionContext(
+  role: "admin" | "member" | "guest",
+  userId: string,
+  store: PermissionStore,
+  guest?: { bots: BotAccess; permissions: GuestPermissions }
+): PermissionContext {
+  if (role === "admin") {
+    return { capabilities: new Set(CAPABILITIES), bots: "all" };
+  }
+  if (role === "guest") {
+    const bots = guest?.bots ?? [];
+    return {
+      capabilities: new Set<string>(),
+      bots: bots === "all" ? "all" : new Set(bots),
+      guest: guest?.permissions,
+    };
+  }
+  const access = store.getBotAccess(userId);
+  return {
+    capabilities: new Set(store.getCapabilities(userId)),
+    bots: access === "all" ? "all" : new Set(access),
+  };
+}

src/data/sessions.test.ts

@@ -0,0 +1,199 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
+import { createHash } from "node:crypto";
+import { createDatabase, type BotDatabase } from "./database.js";
+import { createUserStore, type UserStore } from "./users.js";
+import { createSessionStore, type SessionStore, SESSION_TTL_MS, SESSION_TOUCH_INTERVAL_MS, MAX_SESSIONS_PER_USER, GUEST_SESSION_TTL_MS } from "./sessions.js";
+
+function sha256(token: string) {
+  return createHash("sha256").update(token).digest("hex");
+}
+
+describe("SessionStore", () => {
+  let botDb: BotDatabase;
+  let users: UserStore;
+  let sessions: SessionStore;
+  let userId: string;
+
+  beforeEach(async () => {
+    botDb = createDatabase(":memory:");
+    users = createUserStore(botDb.db);
+    sessions = createSessionStore(botDb.db);
+    const u = await users.createUser("alice", "pw-alice", "admin");
+    userId = u.id;
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    botDb.close();
+  });
+
+  it("createSession returns a raw token whose sha256 matches the DB row id", () => {
+    const { token } = sessions.createSession(userId);
+    const row = botDb.db.prepare("SELECT id FROM sessions").get() as { id: string };
+    expect(row.id).toBe(sha256(token));
+    expect(row.id).not.toBe(token);
+  });
+
+  it("validateAndTouch returns the user for a fresh token", () => {
+    const { token } = sessions.createSession(userId);
+    const result = sessions.validateAndTouch(token);
+    expect(result).not.toBeNull();
+    expect(result!.userId).toBe(userId);
+    expect(result!.username).toBe("alice");
+    expect(result!.role).toBe("admin");
+  });
+
+  it("validateAndTouch returns null and deletes the row for an expired session", () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-01-01T00:00:00Z"));
+    const { token } = sessions.createSession(userId);
+    vi.setSystemTime(new Date("2026-01-01T00:00:00Z").getTime() + SESSION_TTL_MS + 1000);
+    expect(sessions.validateAndTouch(token)).toBeNull();
+    const remaining = (botDb.db.prepare("SELECT COUNT(*) AS n FROM sessions").get() as { n: number }).n;
+    expect(remaining).toBe(0);
+  });
+
+  it("validateAndTouch does not write the DB if called again within the touch interval", () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-01-01T00:00:00Z"));
+    const { token } = sessions.createSession(userId);
+    const before = botDb.db.prepare("SELECT lastSeenAt FROM sessions").get() as { lastSeenAt: number };
+    vi.advanceTimersByTime(SESSION_TOUCH_INTERVAL_MS - 1000);
+    sessions.validateAndTouch(token);
+    const after = botDb.db.prepare("SELECT lastSeenAt FROM sessions").get() as { lastSeenAt: number };
+    expect(after.lastSeenAt).toBe(before.lastSeenAt);
+  });
+
+  it("validateAndTouch writes lastSeenAt and extends expiresAt past the touch interval", () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-01-01T00:00:00Z"));
+    const { token, expiresAt: initialExpiry } = sessions.createSession(userId);
+    vi.advanceTimersByTime(SESSION_TOUCH_INTERVAL_MS + 1000);
+    sessions.validateAndTouch(token);
+    const row = botDb.db.prepare("SELECT lastSeenAt, expiresAt FROM sessions").get() as { lastSeenAt: number; expiresAt: number };
+    expect(row.lastSeenAt).toBe(Date.now());
+    expect(row.expiresAt).toBeGreaterThan(initialExpiry);
+  });
+
+  it("deleteSession removes the row", () => {
+    const { token } = sessions.createSession(userId);
+    sessions.deleteSession(token);
+    const remaining = (botDb.db.prepare("SELECT COUNT(*) AS n FROM sessions").get() as { n: number }).n;
+    expect(remaining).toBe(0);
+    expect(sessions.validateAndTouch(token)).toBeNull();
+  });
+
+  it("deleteAllForUser keeps the exceptToken session", () => {
+    const a = sessions.createSession(userId);
+    const b = sessions.createSession(userId);
+    sessions.deleteAllForUser(userId, a.token);
+    expect(sessions.validateAndTouch(a.token)).not.toBeNull();
+    expect(sessions.validateAndTouch(b.token)).toBeNull();
+  });
+
+  it("cleanupExpired removes only expired rows", () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-01-01T00:00:00Z"));
+    sessions.createSession(userId); // expires later
+    vi.setSystemTime(new Date("2026-01-01T00:00:00Z").getTime() + SESSION_TTL_MS + 1000);
+    sessions.createSession(userId); // fresh
+    sessions.cleanupExpired();
+    const remaining = (botDb.db.prepare("SELECT COUNT(*) AS n FROM sessions").get() as { n: number }).n;
+    expect(remaining).toBe(1);
+  });
+
+  it("createSession caps concurrent sessions per user at MAX_SESSIONS_PER_USER, evicting oldest", async () => {
+    // Create MAX + 2 sessions for the same user.
+    const tokens: string[] = [];
+    for (let i = 0; i < MAX_SESSIONS_PER_USER + 2; i++) {
+      tokens.push(sessions.createSession(userId).token);
+      await new Promise((r) => setTimeout(r, 2)); // stagger createdAt
+    }
+    const count = (botDb.db.prepare("SELECT COUNT(*) AS n FROM sessions").get() as { n: number }).n;
+    expect(count).toBe(MAX_SESSIONS_PER_USER);
+    // The first two should have been evicted, the last MAX remain
+    expect(sessions.validateAndTouch(tokens[0])).toBeNull();
+    expect(sessions.validateAndTouch(tokens[1])).toBeNull();
+    expect(sessions.validateAndTouch(tokens[tokens.length - 1])).not.toBeNull();
+  });
+
+  it("createSession respects cap under concurrent calls (no 1-over-cap race)", async () => {
+    // better-sqlite3 transactions are serialised at the engine level. Calling
+    // createSession N times sequentially via Promise.all proves atomic check+insert.
+    const N = MAX_SESSIONS_PER_USER + 3;
+    await Promise.all(Array.from({ length: N }, () => Promise.resolve(sessions.createSession(userId))));
+    const count = (botDb.db.prepare("SELECT COUNT(*) AS n FROM sessions").get() as { n: number }).n;
+    expect(count).toBe(MAX_SESSIONS_PER_USER);
+  });
+});
+
+describe("guest sessions", () => {
+  let botDb: BotDatabase;
+  let sessions: SessionStore;
+
+  beforeEach(() => {
+    botDb = createDatabase(":memory:");
+    sessions = createSessionStore(botDb.db);
+    // Create the synthetic guest user row to satisfy the sessions FK.
+    botDb.db
+      .prepare("INSERT OR IGNORE INTO users (id, username, passwordHash, createdAt, updatedAt, role) VALUES ('__guest__','游客','!',?,?, 'guest')")
+      .run(Date.now(), Date.now());
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    botDb.close();
+  });
+
+  it("skipCap lets more than MAX_SESSIONS_PER_USER coexist for one principal", () => {
+    const tokens: string[] = [];
+    for (let i = 0; i < MAX_SESSIONS_PER_USER + 3; i++) {
+      tokens.push(sessions.createSession("__guest__", { ttlMs: GUEST_SESSION_TTL_MS, skipCap: true }).token);
+    }
+    // The first token must STILL validate (not evicted).
+    expect(sessions.validateAndTouch(tokens[0])?.role).toBe("guest");
+    const n = (botDb.db.prepare("SELECT COUNT(*) AS n FROM sessions WHERE userId='__guest__'").get() as { n: number }).n;
+    expect(n).toBe(MAX_SESSIONS_PER_USER + 3);
+  });
+
+  it("ttlMs sets a shorter expiry than the default", () => {
+    const { expiresAt } = sessions.createSession("__guest__", { ttlMs: GUEST_SESSION_TTL_MS, skipCap: true });
+    expect(expiresAt).toBeLessThanOrEqual(Date.now() + GUEST_SESSION_TTL_MS + 50);
+  });
+
+  it("validateAndTouch refreshes a guest session to GUEST_SESSION_TTL_MS (1d), not SESSION_TTL_MS (7d)", () => {
+    const { token } = sessions.createSession("__guest__", { ttlMs: GUEST_SESSION_TTL_MS, skipCap: true });
+    // Force the touch branch: backdate lastSeenAt past the touch interval.
+    botDb.db
+      .prepare("UPDATE sessions SET lastSeenAt = ? WHERE userId = '__guest__'")
+      .run(Date.now() - (SESSION_TOUCH_INTERVAL_MS + 1000));
+    const result = sessions.validateAndTouch(token);
+    expect(result?.role).toBe("guest");
+    const row = botDb.db
+      .prepare("SELECT expiresAt FROM sessions WHERE userId = '__guest__'")
+      .get() as { expiresAt: number };
+    // Should refresh to ~now + 1 day, NOT now + 7 days.
+    expect(row.expiresAt).toBeGreaterThan(Date.now() + GUEST_SESSION_TTL_MS - 5000);
+    expect(row.expiresAt).toBeLessThanOrEqual(Date.now() + GUEST_SESSION_TTL_MS + 5000);
+    // Sanity: well below the 7d window.
+    expect(row.expiresAt).toBeLessThan(Date.now() + SESSION_TTL_MS);
+  });
+
+  it("validateAndTouch still refreshes a non-guest (admin) session to SESSION_TTL_MS (7d) on touch", () => {
+    botDb.db
+      .prepare("INSERT INTO users (id, username, passwordHash, createdAt, updatedAt, role) VALUES ('admin1','adminuser','!',?,?, 'admin')")
+      .run(Date.now(), Date.now());
+    const { token } = sessions.createSession("admin1");
+    botDb.db
+      .prepare("UPDATE sessions SET lastSeenAt = ? WHERE userId = 'admin1'")
+      .run(Date.now() - (SESSION_TOUCH_INTERVAL_MS + 1000));
+    const result = sessions.validateAndTouch(token);
+    expect(result?.role).toBe("admin");
+    const row = botDb.db
+      .prepare("SELECT expiresAt FROM sessions WHERE userId = 'admin1'")
+      .get() as { expiresAt: number };
+    // Refreshes to ~now + 7 days, NOT the 1d guest window.
+    expect(row.expiresAt).toBeGreaterThan(Date.now() + SESSION_TTL_MS - 5000);
+    expect(row.expiresAt).toBeLessThanOrEqual(Date.now() + SESSION_TTL_MS + 5000);
+  });
+});

src/data/sessions.ts

@@ -0,0 +1,110 @@
+import { createHash, randomBytes } from "node:crypto";
+import type Database from "better-sqlite3";
+
+export const SESSION_TTL_MS = 7 * 24 * 60 * 60 * 1000; // 7 days
+export const GUEST_SESSION_TTL_MS = 24 * 60 * 60 * 1000; // 1 day — guests are short-lived
+export const SESSION_TOUCH_INTERVAL_MS = 60 * 60 * 1000; // 1 hour
+export const MAX_SESSIONS_PER_USER = 10;
+
+export interface SessionValidation {
+  userId: string;
+  username: string;
+  role: "admin" | "member" | "guest";
+}
+
+export interface SessionStore {
+  createSession(userId: string, opts?: { ttlMs?: number; skipCap?: boolean }): { token: string; expiresAt: number };
+  validateAndTouch(rawToken: string): SessionValidation | null;
+  deleteSession(rawToken: string): void;
+  deleteAllForUser(userId: string, exceptToken?: string): void;
+  cleanupExpired(): void;
+}
+
+function hashToken(token: string): string {
+  return createHash("sha256").update(token).digest("hex");
+}
+
+export function createSessionStore(db: Database.Database): SessionStore {
+  const insertStmt = db.prepare(
+    "INSERT INTO sessions (id, userId, createdAt, expiresAt, lastSeenAt) VALUES (?, ?, ?, ?, ?)"
+  );
+  const selectStmt = db.prepare(`
+    SELECT s.id, s.userId, s.expiresAt, s.lastSeenAt, u.username, u.role
+    FROM sessions s INNER JOIN users u ON u.id = s.userId
+    WHERE s.id = ?
+  `);
+  const deleteByIdStmt = db.prepare("DELETE FROM sessions WHERE id = ?");
+  const touchStmt = db.prepare(
+    "UPDATE sessions SET lastSeenAt = ?, expiresAt = ? WHERE id = ?"
+  );
+  const deleteAllForUserStmt = db.prepare("DELETE FROM sessions WHERE userId = ?");
+  const deleteAllForUserExceptStmt = db.prepare(
+    "DELETE FROM sessions WHERE userId = ? AND id != ?"
+  );
+  const cleanupStmt = db.prepare("DELETE FROM sessions WHERE expiresAt < ?");
+  const countForUserStmt = db.prepare("SELECT COUNT(*) AS n FROM sessions WHERE userId = ?");
+  const deleteOldestForUserStmt = db.prepare(
+    "DELETE FROM sessions WHERE id IN (SELECT id FROM sessions WHERE userId = ? ORDER BY createdAt ASC LIMIT ?)"
+  );
+
+  return {
+    createSession(userId, opts) {
+      // Cap concurrent sessions per user — oldest gets evicted on overflow.
+      // Wrap the count → delete → insert in a transaction so concurrent logins
+      // for the same user can't both pass the cap check and both insert,
+      // ending up 1 over cap (race window between count and insert).
+      const token = randomBytes(32).toString("base64url");
+      const id = hashToken(token);
+      const now = Date.now();
+      const expiresAt = now + (opts?.ttlMs ?? SESSION_TTL_MS);
+      const tx = db.transaction(() => {
+        if (!opts?.skipCap) {
+          const existing = (countForUserStmt.get(userId) as { n: number }).n;
+          if (existing >= MAX_SESSIONS_PER_USER) {
+            deleteOldestForUserStmt.run(userId, existing - MAX_SESSIONS_PER_USER + 1);
+          }
+        }
+        insertStmt.run(id, userId, now, expiresAt, now);
+      });
+      tx();
+      return { token, expiresAt };
+    },
+
+    validateAndTouch(rawToken) {
+      if (!rawToken) return null;
+      const id = hashToken(rawToken);
+      const row = selectStmt.get(id) as
+        | { id: string; userId: string; expiresAt: number; lastSeenAt: number; username: string; role: string }
+        | undefined;
+      if (!row) return null;
+      const now = Date.now();
+      if (row.expiresAt < now) {
+        deleteByIdStmt.run(id);
+        return null;
+      }
+      if (now - row.lastSeenAt > SESSION_TOUCH_INTERVAL_MS) {
+        // Refresh against the role's own TTL — guests are short-lived (1d) and
+        // must NOT be bumped to the member/admin 7d window on touch.
+        const ttl = row.role === "guest" ? GUEST_SESSION_TTL_MS : SESSION_TTL_MS;
+        touchStmt.run(now, now + ttl, id);
+      }
+      return { userId: row.userId, username: row.username, role: row.role as "admin" | "member" | "guest" };
+    },
+
+    deleteSession(rawToken) {
+      deleteByIdStmt.run(hashToken(rawToken));
+    },
+
+    deleteAllForUser(userId, exceptToken) {
+      if (exceptToken) {
+        deleteAllForUserExceptStmt.run(userId, hashToken(exceptToken));
+      } else {
+        deleteAllForUserStmt.run(userId);
+      }
+    },
+
+    cleanupExpired() {
+      cleanupStmt.run(Date.now());
+    },
+  };
+}

src/data/users.test.ts

@@ -0,0 +1,226 @@
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
+import { createDatabase, type BotDatabase } from "./database.js";
+import { createUserStore, UsernameTakenError, GUEST_USER_ID, GUEST_USERNAME, type UserStore } from "./users.js";
+
+describe("UserStore", () => {
+  let botDb: BotDatabase;
+  let users: UserStore;
+
+  beforeEach(() => {
+    botDb = createDatabase(":memory:");
+    users = createUserStore(botDb.db);
+  });
+
+  afterEach(() => {
+    botDb.close();
+  });
+
+  it("countUsers is 0 on a fresh db", () => {
+    expect(users.countUsers()).toBe(0);
+  });
+
+  it("createUser stores the user and bumps countUsers", async () => {
+    const u = await users.createUser("alice", "pw-hunter2", "member");
+    expect(u.id).toMatch(/^[0-9a-f-]{36}$/);
+    expect(u.username).toBe("alice");
+    expect(users.countUsers()).toBe(1);
+  });
+
+  it("findByUsername is case-insensitive and returns null for missing", async () => {
+    await users.createUser("Alice", "pw-alice", "member");
+    expect(users.findByUsername("ALICE")).not.toBeNull();
+    expect(users.findByUsername("alice")).not.toBeNull();
+    expect(users.findByUsername("bob")).toBeNull();
+  });
+
+  it("createUser rejects duplicate usernames (case-insensitive)", async () => {
+    await users.createUser("Alice", "pw-alice", "member");
+    await expect(users.createUser("alice", "pw-alice-2", "member")).rejects.toBeInstanceOf(UsernameTakenError);
+  });
+
+  it("verifyPassword accepts correct password and rejects wrong one", async () => {
+    await users.createUser("alice", "correct-horse-battery-staple", "member");
+    const row = users.findByUsername("alice");
+    expect(row).not.toBeNull();
+    expect(await users.verifyPassword("correct-horse-battery-staple", row!.passwordHash)).toBe(true);
+    expect(await users.verifyPassword("wrong", row!.passwordHash)).toBe(false);
+  });
+
+  it("changePassword updates the hash so the old password no longer verifies", async () => {
+    const u = await users.createUser("alice", "old-pw-pw", "member");
+    await users.changePassword(u.id, "new-pw-pw");
+    const row = users.findByUsername("alice");
+    expect(await users.verifyPassword("old-pw-pw", row!.passwordHash)).toBe(false);
+    expect(await users.verifyPassword("new-pw-pw", row!.passwordHash)).toBe(true);
+  });
+
+  it("listUsers returns id+username+createdAt ascending, no password hash", async () => {
+    await users.createUser("alice", "pw-alice", "member");
+    await users.createUser("bob", "pw-bob-bob", "member");
+    const list = users.listUsers();
+    expect(list).toHaveLength(2);
+    expect(list[0].username).toBe("alice");
+    expect(list[1].username).toBe("bob");
+    expect(list[0]).not.toHaveProperty("passwordHash");
+    expect(list[0].id).toMatch(/^[0-9a-f-]{36}$/);
+    expect(typeof list[0].createdAt).toBe("number");
+  });
+
+  it("deleteUser removes the row and returns true; returns false for unknown id", async () => {
+    const u = await users.createUser("alice", "pw-alice", "member");
+    expect(users.deleteUser(u.id)).toBe(true);
+    expect(users.countUsers()).toBe(0);
+    expect(users.deleteUser("not-a-real-id")).toBe(false);
+  });
+
+  it("createFirstUser succeeds on empty db, returns null when a user already exists", async () => {
+    const a = await users.createFirstUser("alice", "pw-alice");
+    expect(a).not.toBeNull();
+    expect(a!.username).toBe("alice");
+    const b = await users.createFirstUser("bob", "pw-bob-bob");
+    expect(b).toBeNull();
+    expect(users.countUsers()).toBe(1);
+  });
+
+  it("createFirstUser is race-safe: concurrent calls produce exactly one user", async () => {
+    const [a, b, c] = await Promise.all([
+      users.createFirstUser("alice", "pw-alice"),
+      users.createFirstUser("bob", "pw-bob-bob"),
+      users.createFirstUser("charlie", "pw-charlie-pw"),
+    ]);
+    const created = [a, b, c].filter((u) => u !== null);
+    expect(created).toHaveLength(1);
+    expect(users.countUsers()).toBe(1);
+  });
+
+  it("createFirstUser always creates an admin", async () => {
+    const u = await users.createFirstUser("alice", "pw-alice");
+    expect(u).not.toBeNull();
+    expect(u!.role).toBe("admin");
+  });
+
+  it("countAdmins reflects only role=admin", async () => {
+    await users.createUser("alice", "pw-alice", "admin");
+    await users.createUser("bob", "pw-bob-bob", "member");
+    expect(users.countUsers()).toBe(2);
+    expect(users.countAdmins()).toBe(1);
+  });
+
+  it("setRole changes the role and returns true; false for unknown id", async () => {
+    const u = await users.createUser("alice", "pw-alice", "member");
+    expect(users.setRole(u.id, "admin")).toBe(true);
+    expect(users.findById(u.id)!.role).toBe("admin");
+    expect(users.setRole("nope", "admin")).toBe(false);
+  });
+
+  it("listUsers includes role", async () => {
+    await users.createUser("alice", "pw-alice", "admin");
+    await users.createUser("bob", "pw-bob-bob", "member");
+    const list = users.listUsers();
+    const alice = list.find((u) => u.username === "alice")!;
+    const bob = list.find((u) => u.username === "bob")!;
+    expect(alice.role).toBe("admin");
+    expect(bob.role).toBe("member");
+  });
+
+  it("setRoleIfNotLastAdmin returns 'would_orphan' for the only admin being demoted", async () => {
+    const alice = await users.createUser("alice", "pw-alice", "admin");
+    expect(users.setRoleIfNotLastAdmin(alice.id, "member")).toBe("would_orphan");
+    expect(users.findById(alice.id)!.role).toBe("admin"); // unchanged
+  });
+
+  it("setRoleIfNotLastAdmin allows demotion when another admin exists", async () => {
+    const alice = await users.createUser("alice", "pw-alice", "admin");
+    await users.createUser("bob", "pw-bob-bob", "admin");
+    expect(users.setRoleIfNotLastAdmin(alice.id, "member")).toBe("ok");
+    expect(users.findById(alice.id)!.role).toBe("member");
+  });
+
+  it("setRoleIfNotLastAdmin returns 'not_found' for unknown id", () => {
+    expect(users.setRoleIfNotLastAdmin("not-a-real-id", "member")).toBe("not_found");
+  });
+
+  it("setRoleIfNotLastAdmin: concurrent demotions of two admins keep one admin", async () => {
+    const alice = await users.createUser("alice", "pw-alice", "admin");
+    const bob = await users.createUser("bob", "pw-bob-bob", "admin");
+    // Concurrent demotion of both
+    const [r1, r2] = await Promise.all([
+      Promise.resolve(users.setRoleIfNotLastAdmin(alice.id, "member")),
+      Promise.resolve(users.setRoleIfNotLastAdmin(bob.id, "member")),
+    ]);
+    // Exactly one should succeed; the other gets "would_orphan"
+    const oks = [r1, r2].filter((r) => r === "ok").length;
+    const orphans = [r1, r2].filter((r) => r === "would_orphan").length;
+    expect(oks).toBe(1);
+    expect(orphans).toBe(1);
+    // System retains at least one admin
+    expect(users.countAdmins()).toBe(1);
+  });
+
+  it("deleteUserIfNotLastAdmin returns 'would_orphan' for the only admin", async () => {
+    const alice = await users.createUser("alice", "pw-alice", "admin");
+    expect(users.deleteUserIfNotLastAdmin(alice.id)).toBe("would_orphan");
+    expect(users.findById(alice.id)).not.toBeNull();
+  });
+
+  it("deleteUserIfNotLastAdmin allows deleting a member at any count", async () => {
+    await users.createUser("alice", "pw-alice", "admin");
+    const bob = await users.createUser("bob", "pw-bob-bob", "member");
+    expect(users.deleteUserIfNotLastAdmin(bob.id)).toBe("ok");
+    expect(users.findById(bob.id)).toBeNull();
+  });
+
+  it("deleteUserIfNotLastAdmin: concurrent deletes of two admins keep one admin", async () => {
+    const alice = await users.createUser("alice", "pw-alice", "admin");
+    const bob = await users.createUser("bob", "pw-bob-bob", "admin");
+    const [r1, r2] = await Promise.all([
+      Promise.resolve(users.deleteUserIfNotLastAdmin(alice.id)),
+      Promise.resolve(users.deleteUserIfNotLastAdmin(bob.id)),
+    ]);
+    const oks = [r1, r2].filter((r) => r === "ok").length;
+    const orphans = [r1, r2].filter((r) => r === "would_orphan").length;
+    expect(oks).toBe(1);
+    expect(orphans).toBe(1);
+    expect(users.countAdmins()).toBe(1);
+  });
+});
+
+describe("guest row exclusion", () => {
+  let botDb: BotDatabase;
+  let users: UserStore;
+
+  beforeEach(() => {
+    botDb = createDatabase(":memory:");
+    users = createUserStore(botDb.db);
+  });
+
+  afterEach(() => {
+    botDb.close();
+  });
+
+  it("countUsers and listUsers ignore the reserved guest row", async () => {
+    await users.createUser("alice", "password123", "member");
+    // Insert the reserved guest row directly (mirrors the migration).
+    botDb.db.prepare(
+      "INSERT OR IGNORE INTO users (id, username, passwordHash, createdAt, updatedAt, role) VALUES (?, ?, ?, ?, ?, 'guest')"
+    ).run(GUEST_USER_ID, GUEST_USERNAME, "!", Date.now(), Date.now());
+
+    expect(users.countUsers()).toBe(1); // alice only
+    expect(users.listUsers().some((u) => u.id === GUEST_USER_ID)).toBe(false);
+  });
+
+  it("setRoleIfNotLastAdmin refuses to re-role the reserved guest principal", () => {
+    // The guest row is seeded by createDatabase via ensureGuestUser.
+    expect(users.findById(GUEST_USER_ID)!.role).toBe("guest"); // sanity
+    expect(users.setRoleIfNotLastAdmin(GUEST_USER_ID, "admin")).toBe("not_found");
+    // The guest row's role is unchanged.
+    expect(users.findById(GUEST_USER_ID)!.role).toBe("guest");
+  });
+
+  it("deleteUserIfNotLastAdmin refuses to delete the reserved guest principal", () => {
+    expect(users.findById(GUEST_USER_ID)).not.toBeNull(); // sanity
+    expect(users.deleteUserIfNotLastAdmin(GUEST_USER_ID)).toBe("not_found");
+    // The guest row still exists.
+    expect(users.findById(GUEST_USER_ID)).not.toBeNull();
+  });
+});

src/data/users.ts

@@ -0,0 +1,176 @@
+import { randomUUID } from "node:crypto";
+import type Database from "better-sqlite3";
+import bcrypt from "bcryptjs";
+
+const BCRYPT_ROUNDS = 12;
+
+export type UserRole = "admin" | "member" | "guest";
+
+/** Reserved synthetic principal for login-less guest sessions. The username is
+ *  non-ASCII so it can never collide with an API-created account (which is
+ *  validated against ^[A-Za-z0-9_\-.]{3,32}$). */
+export const GUEST_USER_ID = "__guest__";
+export const GUEST_USERNAME = "游客";
+
+export interface UserRow {
+  id: string;
+  username: string;
+  passwordHash: string;
+  createdAt: number;
+  updatedAt: number;
+  role: UserRole;
+}
+
+export interface UserStore {
+  countUsers(): number;
+  countAdmins(): number;
+  createUser(username: string, password: string, role: UserRole): Promise<UserRow>;
+  createFirstUser(username: string, password: string): Promise<UserRow | null>;
+  findByUsername(username: string): UserRow | null;
+  findById(id: string): UserRow | null;
+  verifyPassword(plain: string, hash: string): Promise<boolean>;
+  changePassword(userId: string, newPassword: string): Promise<void>;
+  setRole(userId: string, role: UserRole): boolean;
+  setRoleIfNotLastAdmin(id: string, newRole: UserRole): "ok" | "not_found" | "would_orphan";
+  deleteUser(id: string): boolean;
+  deleteUserIfNotLastAdmin(id: string): "ok" | "not_found" | "would_orphan";
+  listUsers(): Array<{ id: string; username: string; createdAt: number; role: UserRole }>;
+}
+
+export class UsernameTakenError extends Error {
+  constructor(username: string) {
+    super(`username taken: ${username}`);
+    this.name = "UsernameTakenError";
+  }
+}
+
+export function createUserStore(db: Database.Database): UserStore {
+  const countStmt = db.prepare("SELECT COUNT(*) AS n FROM users WHERE role != 'guest'");
+  const countAdminsStmt = db.prepare("SELECT COUNT(*) AS n FROM users WHERE role = 'admin'");
+  const insertStmt = db.prepare(
+    "INSERT INTO users (id, username, passwordHash, createdAt, updatedAt, role) VALUES (?, ?, ?, ?, ?, ?)"
+  );
+  const findByUsernameStmt = db.prepare(
+    "SELECT id, username, passwordHash, createdAt, updatedAt, role FROM users WHERE username = ? COLLATE NOCASE"
+  );
+  const findByIdStmt = db.prepare(
+    "SELECT id, username, passwordHash, createdAt, updatedAt, role FROM users WHERE id = ?"
+  );
+  const updatePasswordStmt = db.prepare(
+    "UPDATE users SET passwordHash = ?, updatedAt = ? WHERE id = ?"
+  );
+  const updateRoleStmt = db.prepare(
+    "UPDATE users SET role = ?, updatedAt = ? WHERE id = ?"
+  );
+  const listUsersStmt = db.prepare(
+    "SELECT id, username, createdAt, role FROM users WHERE role != 'guest' ORDER BY createdAt ASC"
+  );
+  const deleteUserStmt = db.prepare("DELETE FROM users WHERE id = ?");
+
+  return {
+    countUsers() {
+      return (countStmt.get() as { n: number }).n;
+    },
+
+    countAdmins() {
+      return (countAdminsStmt.get() as { n: number }).n;
+    },
+
+    async createUser(username, password, role) {
+      const hash = await bcrypt.hash(password, BCRYPT_ROUNDS);
+      const id = randomUUID();
+      const now = Date.now();
+      try {
+        insertStmt.run(id, username, hash, now, now, role);
+      } catch (err) {
+        if (err && typeof err === "object" && (err as { code?: string }).code === "SQLITE_CONSTRAINT_UNIQUE") {
+          throw new UsernameTakenError(username);
+        }
+        throw err;
+      }
+      return { id, username, passwordHash: hash, createdAt: now, updatedAt: now, role };
+    },
+
+    async createFirstUser(username, password) {
+      const hash = await bcrypt.hash(password, BCRYPT_ROUNDS);
+      const id = randomUUID();
+      const now = Date.now();
+      const run = db.transaction(() => {
+        const count = (countStmt.get() as { n: number }).n;
+        if (count !== 0) return null;
+        try {
+          insertStmt.run(id, username, hash, now, now, "admin");
+        } catch (err) {
+          if (err && typeof err === "object" && (err as { code?: string }).code === "SQLITE_CONSTRAINT_UNIQUE") {
+            return null;
+          }
+          throw err;
+        }
+        return { id, username, passwordHash: hash, createdAt: now, updatedAt: now, role: "admin" } as UserRow;
+      });
+      return run();
+    },
+
+    findByUsername(username) {
+      return (findByUsernameStmt.get(username) as UserRow | undefined) ?? null;
+    },
+
+    findById(id) {
+      return (findByIdStmt.get(id) as UserRow | undefined) ?? null;
+    },
+
+    verifyPassword(plain, hash) {
+      return bcrypt.compare(plain, hash);
+    },
+
+    async changePassword(userId, newPassword) {
+      const hash = await bcrypt.hash(newPassword, BCRYPT_ROUNDS);
+      updatePasswordStmt.run(hash, Date.now(), userId);
+    },
+
+    setRole(userId, role) {
+      const result = updateRoleStmt.run(role, Date.now(), userId);
+      return result.changes > 0;
+    },
+
+    setRoleIfNotLastAdmin(id, newRole) {
+      const tx = db.transaction(() => {
+        const row = findByIdStmt.get(id) as UserRow | undefined;
+        if (!row) return "not_found" as const;
+        if (row.role === "guest") return "not_found" as const; // reserved synthetic principal
+        if (row.role === newRole) return "ok" as const; // no-op
+        if (row.role === "admin" && newRole === "member") {
+          const adminCount = (countAdminsStmt.get() as { n: number }).n;
+          if (adminCount <= 1) return "would_orphan" as const;
+        }
+        updateRoleStmt.run(newRole, Date.now(), id);
+        return "ok" as const;
+      });
+      return tx();
+    },
+
+    listUsers() {
+      return listUsersStmt.all() as Array<{ id: string; username: string; createdAt: number; role: UserRole }>;
+    },
+
+    deleteUser(id) {
+      const result = deleteUserStmt.run(id);
+      return result.changes > 0;
+    },
+
+    deleteUserIfNotLastAdmin(id) {
+      const tx = db.transaction(() => {
+        const row = findByIdStmt.get(id) as UserRow | undefined;
+        if (!row) return "not_found" as const;
+        if (row.role === "guest") return "not_found" as const; // reserved synthetic principal
+        if (row.role === "admin") {
+          const adminCount = (countAdminsStmt.get() as { n: number }).n;
+          if (adminCount <= 1) return "would_orphan" as const;
+        }
+        deleteUserStmt.run(id);
+        return "ok" as const;
+      });
+      return tx();
+    },
+  };
+}

src/index.ts

@@ -1,26 +1,43 @@
 import path from "node:path";
 import { fileURLToPath } from "node:url";
-import { loadConfig, saveConfig } from "./data/config.js";
+import { loadConfig, saveConfig, migrateLegacyConfig, isProviderEnabled } from "./data/config.js";
 import { createDatabase } from "./data/database.js";
 import { createLogger } from "./logger.js";
 import { createApiServerManager } from "./music/api-server.js";
 import { NeteaseProvider } from "./music/netease.js";
 import { QQMusicProvider } from "./music/qq.js";
 import { BiliBiliProvider } from "./music/bilibili.js";
+import { LocalMusicProvider } from "./music/local.js";
+import { KugouProvider } from "./music/kugou.js";
+import { JellyfinProvider } from "./music/jellyfin.js";
+import { SpotifyProvider } from "./music/spotify/provider.js";
+import { SpotifyOAuth, createFileOAuthTokenStore } from "./music/spotify/spotify-oauth.js";
 import { createCookieStore } from "./music/auth.js";
+import { createAvatarStore } from "./data/avatars.js";
+import { createPermissionStore } from "./data/permissions.js";
 import { BotManager } from "./bot/manager.js";
 import { createWebServer } from "./web/server.js";
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const ROOT_DIR = path.resolve(__dirname, "..");
 const DATA_DIR = path.join(ROOT_DIR, "data");
-const CONFIG_PATH = path.join(ROOT_DIR, "config.json");
+// config.json lives under the persisted data dir (the Docker volume) alongside the
+// DB/cookies/logs, so it survives container restarts and manual edits take effect
+// (#86). LEGACY_CONFIG_PATH is the old root-level location we migrate from once.
+const CONFIG_PATH = path.join(DATA_DIR, "config.json");
+const LEGACY_CONFIG_PATH = path.join(ROOT_DIR, "config.json");
 const DB_PATH = path.join(DATA_DIR, "tsmusicbot.db");
 const LOG_DIR = path.join(DATA_DIR, "logs");
 const COOKIE_DIR = path.join(DATA_DIR, "cookies");
+const AVATAR_DIR = path.join(DATA_DIR, "avatars");
+const LOCAL_AUDIO_DIR = path.join(DATA_DIR, "local-audio");
+const SPOTIFY_DATA_DIR = path.join(DATA_DIR, "spotify");
 const STATIC_DIR = path.join(ROOT_DIR, "web", "dist");
 
 async function main() {
+  // Migrate a pre-#86 root-level config.json into the data dir so existing
+  // installs keep their settings; no-op if already migrated or none exists.
+  migrateLegacyConfig(LEGACY_CONFIG_PATH, CONFIG_PATH);
   const config = loadConfig(CONFIG_PATH);
   saveConfig(CONFIG_PATH, config);
 
@@ -36,7 +53,14 @@ async function main() {
   const db = createDatabase(DB_PATH);
 
   const apiServer = createApiServerManager(
-    { neteasePort: config.neteaseApiPort, qqMusicPort: config.qqMusicApiPort },
+    {
+      neteasePort: config.neteaseApiPort,
+      qqMusicPort: config.qqMusicApiPort,
+      // Provider gating: a sidecar only starts (and binds 3001/3200) when its
+      // source is listed in enabledProviders — both are on in the default config.
+      neteaseEnabled: isProviderEnabled(config, "netease"),
+      qqEnabled: isProviderEnabled(config, "qq"),
+    },
     logger
   );
   await apiServer.start();
@@ -44,14 +68,64 @@ async function main() {
   const neteaseProvider = new NeteaseProvider(apiServer.getNeteaseBaseUrl());
   const qqProvider = new QQMusicProvider(apiServer.getQQMusicBaseUrl());
   const bilibiliProvider = new BiliBiliProvider();
+  const localProvider = new LocalMusicProvider(LOCAL_AUDIO_DIR);
+  const kugouProvider = new KugouProvider();
+  const spotifyProvider = new SpotifyProvider();
+  // Safety gate (spec §7): the source is inert unless EXPLICITLY enabled.
+  // Only feed credentials when enabled — otherwise the provider has no creds,
+  // hasCreds() is false, search returns empty, and getAuthStatus() is loggedIn:false,
+  // so setting a Client ID/Secret alone (enabled:false) never activates Spotify.
+  if (config.spotify.enabled && config.spotify.clientId) {
+    spotifyProvider.setCreds(config.spotify.clientId, config.spotify.clientSecret);
+  }
 
   const cookieStore = createCookieStore(COOKIE_DIR);
+  const avatarStore = createAvatarStore(AVATAR_DIR);
   const neteaseCookie = cookieStore.load("netease");
   if (neteaseCookie) neteaseProvider.setCookie(neteaseCookie);
   const qqCookie = cookieStore.load("qq");
   if (qqCookie) qqProvider.setCookie(qqCookie);
   const bilibiliCookie = cookieStore.load("bilibili");
   if (bilibiliCookie) bilibiliProvider.setCookie(bilibiliCookie);
+  const kugouCookie = cookieStore.load("kugou");
+  if (kugouCookie) kugouProvider.setCookie(kugouCookie);
+
+  // Jellyfin: admin-configured connection (no QR). The persisted blob carries
+  // AccessToken + User.Id + DeviceId and lives alongside the other platform
+  // cookies; a Jellyfin server that is unreachable at boot must not block
+  // startup — the provider authenticates lazily on first use.
+  const jellyfinProvider = new JellyfinProvider(logger);
+  jellyfinProvider.configure(config.jellyfin);
+  const jellyfinAuth = cookieStore.load("jellyfin");
+  if (jellyfinAuth) jellyfinProvider.setCookie(jellyfinAuth);
+  jellyfinProvider.setPersist((serialized) => cookieStore.save("jellyfin", serialized));
+
+  // Restore the persisted per-provider audio quality (#125) onto the shared,
+  // process-wide providers so a restart keeps the user's choice. setQuality()
+  // normalizes/ignores unknown values, so a stale entry can never break playback.
+  neteaseProvider.setQuality(config.audioQuality.netease);
+  qqProvider.setQuality(config.audioQuality.qq);
+  bilibiliProvider.setQuality(config.audioQuality.bilibili);
+  kugouProvider.setQuality(config.audioQuality.kugou);
+  jellyfinProvider.setQuality(config.audioQuality.jellyfin);
+
+  const permissions = createPermissionStore(db.db);
+
+  // Single process-wide Spotify authorization (one Premium account for Stage 3).
+  // Threaded into BOTH the web OAuth router and every bot's SpotifyController so
+  // a web login immediately authorizes playback (C3.1). Own-app clientId => the
+  // redirect points at this bot's web callback; empty clientId leaves OAuth
+  // disabled (isAuthorized() stays false and the Rust backend never starts).
+  const spotifyOAuthClientId = config.spotify.clientId.trim();
+  const spotifyOAuth = new SpotifyOAuth({
+    clientId: spotifyOAuthClientId || undefined,
+    redirectUri: spotifyOAuthClientId
+      ? `http://127.0.0.1:${config.webPort}/api/spotify/callback`
+      : undefined,
+    store: createFileOAuthTokenStore(
+      path.join(SPOTIFY_DATA_DIR, "oauth", "oauth-tokens.json"),
+    ),
+  });
 
   const botManager = new BotManager(
     neteaseProvider,
@@ -59,7 +133,16 @@ async function main() {
     bilibiliProvider,
     db,
     config,
-    logger
+    logger,
+    avatarStore,
+    permissions,
+    CONFIG_PATH,
+    localProvider,
+    kugouProvider,
+    spotifyProvider,
+    SPOTIFY_DATA_DIR,
+    spotifyOAuth,
+    jellyfinProvider
   );
   await botManager.loadSavedBots();
 
@@ -69,16 +152,26 @@ async function main() {
     neteaseProvider,
     qqProvider,
     bilibiliProvider,
+    localProvider,
+    kugouProvider,
+    spotifyProvider,
+    jellyfinProvider,
     database: db,
+    avatarStore,
     config,
+    configPath: CONFIG_PATH,
     logger,
     cookieStore,
     staticDir: STATIC_DIR,
+    spotifyOAuth,
   });
   await webServer.start();
 
   logger.info({ webPort: config.webPort }, "TSMusicBot started");
-  logger.info(`WebUI: http://localhost:${config.webPort}`);
+  const publicUrl = (config.publicUrl ?? "").trim().replace(/\/+$/, "");
+  logger.info(
+    `WebUI: ${publicUrl || `http://localhost:${config.webPort}`}`
+  );
 
   const shutdown = () => {
     logger.info("Shutting down...");