feat(web): artist search, artist pages, and full-catalogue playback

Adds artist support for the NetEase and QQ providers plus the matching UI.

Backend:
- SearchResult gains `artists`; new optional MusicProvider methods
  getArtistDetail / getArtistSongs / getArtistAlbums / getArtistAllSongs.
- NetEase: /cloudsearch type=100 for artist search, /artists, /artist/songs,
  /artist/album and /artist/desc for the artist page.
- QQ: singer search rides along in the existing musicu.fcg batch
  (search_type=1); singer detail via music.web_singer_info_svr. QQ exposes no
  working singer-song paging endpoint, so the full catalogue is built from the
  hot 50 plus every album of the singer (album search filtered by singerMID,
  songs fetched per album, de-duplicated, cached for 10 minutes). A failed
  album sweep is never cached and degrades to the hot list.
- API: GET /api/music/artist/:id and POST /api/player/:botId/play-artist
  (player.control capability, guest flag playCollection); /search/all now
  aggregates artists too.

Frontend:
- Search history in localStorage (max 10, per platform, never shared between
  users), shown as a dropdown under the search box and as 最近搜索 chips.
- Artist row in the search results; new /artist/:id page (portrait, aliases,
  stats, description, top songs, album shelf) with 播放 / 随机播放, which queue
  the singer's whole catalogue.
- playArtist store action.

Tests cover the provider mappers, the new routes, the play-artist collector
(paging, de-duplication, 500-track cap), permission gating and the new views.

src/music/netease.test.ts

@@ -1,5 +1,12 @@
 import { describe, it, expect, vi } from "vitest";
-import { parseLyrics, mapNeteaseAlbums, mapNeteaseSongs, parseNeteaseTrial, NeteaseProvider } from "./netease.js";
+import {
+  parseLyrics,
+  mapNeteaseAlbums,
+  mapNeteaseSongs,
+  mapNeteaseArtists,
+  parseNeteaseTrial,
+  NeteaseProvider,
+} from "./netease.js";
 
 describe("NetEase adapter", () => {
   it("parses LRC format lyrics", () => {
@@ -138,6 +145,75 @@ describe("NeteaseProvider.search pagination", () => {
     expect(callByType(get, 1000).offset).toBe(0);
     expect(callByType(get, 10).offset).toBe(0);
   });
+
+  it("requests artists (type=100) and returns them alongside songs/albums/playlists", async () => {
+    const p = new NeteaseProvider("http://x");
+    const get = vi.fn(async (_path: string, cfg: any) => ({
+      data:
+        cfg.params.type === 100
+          ? { result: { artists: [{ id: 6452, name: "Adele", picUrl: "http://p/1.jpg", musicSize: 120 }] } }
+          : { result: { songs: [], playlists: [], albums: [] } },
+    }));
+    (p as any).api = { get };
+
+    const res = await p.search("adele", 20, 0);
+
+    expect(callByType(get, 100).limit).toBe(20);
+    expect(callByType(get, 100).offset).toBe(0);
+    expect(res.artists).toEqual([
+      {
+        id: "6452",
+        name: "Adele",
+        avatarUrl: "http://p/1.jpg",
+        aliases: [],
+        songCount: 120,
+        albumCount: undefined,
+        platform: "netease",
+      },
+    ]);
+  });
+});
+
+describe("mapNeteaseArtists (artist search + detail)", () => {
+  it("maps cloudsearch type=100 artist entries", () => {
+    const out = mapNeteaseArtists([
+      {
+        id: 6452,
+        name: "Adele",
+        picUrl: "http://p/1.jpg",
+        alias: ["阿黛尔"],
+        musicSize: 120,
+        albumSize: 9,
+      },
+    ]);
+    expect(out).toEqual([
+      {
+        id: "6452",
+        name: "Adele",
+        avatarUrl: "http://p/1.jpg",
+        aliases: ["阿黛尔"],
+        songCount: 120,
+        albumCount: 9,
+        platform: "netease",
+      },
+    ]);
+  });
+
+  it("falls back to img1v1Url/alia and drops non-string or empty aliases", () => {
+    const out = mapNeteaseArtists([
+      { id: 1, name: "X", img1v1Url: "http://p/2.jpg", alia: ["a", "", null, 3] },
+    ]);
+    expect(out[0].avatarUrl).toBe("http://p/2.jpg");
+    expect(out[0].aliases).toEqual(["a"]);
+    expect(out[0].songCount).toBeUndefined();
+    expect(out[0].albumCount).toBeUndefined();
+  });
+
+  it("returns [] for empty/null input", () => {
+    expect(mapNeteaseArtists([])).toEqual([]);
+    expect(mapNeteaseArtists(null as any)).toEqual([]);
+    expect(mapNeteaseArtists(undefined as any)).toEqual([]);
+  });
 });
 
 describe("NeteaseProvider per-user login (#164)", () => {
@@ -184,3 +260,57 @@ describe("NeteaseProvider per-user login (#164)", () => {
     expect(personal.platform).toBe("netease");
   });
 });
+
+describe("NeteaseProvider.getArtistAllSongs (全部歌曲 paging)", () => {
+  const rawSongs = [
+    { id: 1, name: "A", artists: [{ name: "X" }], album: { name: "Al" }, duration: 200000, fee: 0 },
+    { id: 2, name: "B", artists: [{ name: "X" }], album: { name: "Al" }, duration: 100000, fee: 0 },
+  ];
+
+  function withGet(p: NeteaseProvider, impl: (path: string, cfg: any) => any) {
+    const get = vi.fn(async (path: string, cfg: any) => ({ data: impl(path, cfg) }));
+    (p as any).api = { get };
+    return get;
+  }
+
+  it("pages /artist/songs with order=hot and reports total/hasMore", async () => {
+    const p = new NeteaseProvider("http://x");
+    const get = withGet(p, () => ({ songs: rawSongs, total: 345, more: true }));
+
+    const page = await p.getArtistAllSongs("46487", 50, 50);
+
+    expect(get).toHaveBeenCalledTimes(1);
+    expect(get.mock.calls[0][0]).toBe("/artist/songs");
+    expect(get.mock.calls[0][1].params).toMatchObject({
+      id: "46487",
+      limit: 50,
+      offset: 50,
+      order: "hot",
+    });
+    expect(page.songs.map((s) => s.id)).toEqual(["1", "2"]);
+    expect(page.total).toBe(345);
+    expect(page.hasMore).toBe(true);
+  });
+
+  it("derives hasMore from total when the upstream omits `more`", async () => {
+    const p = new NeteaseProvider("http://x");
+    withGet(p, (_path, cfg) => ({
+      songs: rawSongs.slice(cfg.params.offset, cfg.params.offset + cfg.params.limit),
+      total: 2,
+    }));
+
+    expect((await p.getArtistAllSongs("1", 0, 1)).hasMore).toBe(true);
+    expect((await p.getArtistAllSongs("1", 1, 1)).hasMore).toBe(false);
+  });
+
+  it("clamps limit to 100, offset to >= 0, and derives a total when absent", async () => {
+    const p = new NeteaseProvider("http://x");
+    const get = withGet(p, () => ({ songs: rawSongs }));
+
+    const page = await p.getArtistAllSongs("1", -5, 500);
+
+    expect(get.mock.calls[0][1].params).toMatchObject({ limit: 100, offset: 0 });
+    expect(page.total).toBe(2);
+    expect(page.hasMore).toBe(false);
+  });
+});

src/music/netease.ts

@@ -10,6 +10,9 @@ import type {
   QrCodeResult,
   AuthStatus,
   Album,
+  Artist,
+  ArtistDetail,
+  ArtistSongPage,
 } from "./provider.js";
 
 export function parseLyrics(lrc: string, tlyric?: string): LyricLine[] {
@@ -69,6 +72,21 @@ export function mapNeteaseAlbums(raw: any[] | null | undefined): Album[] {
   }));
 }
 
+export function mapNeteaseArtists(raw: any[] | null | undefined): Artist[] {
+  if (!Array.isArray(raw)) return [];
+  return raw.map((a: any) => ({
+    id: String(a.id),
+    name: a.name ?? "",
+    avatarUrl: a.picUrl ?? a.img1v1Url ?? "",
+    aliases: (a.alias ?? a.alia ?? []).filter(
+      (x: unknown): x is string => typeof x === "string" && x.length > 0
+    ),
+    songCount: a.musicSize ?? undefined,
+    albumCount: a.albumSize ?? undefined,
+    platform: "netease",
+  }));
+}
+
 export function mapNeteaseSongs(raw: any[] | null | undefined): Song[] {
   if (!Array.isArray(raw)) return [];
   return raw.map((s: any) => ({
@@ -137,7 +155,7 @@ export class NeteaseProvider implements MusicProvider {
     // /cloudsearch supports offset for every type. Songs, playlists (type 1000)
     // and albums (type 10) are all limit/offset-driven so the web can page past
     // the first page (playlists/albums were previously hardcoded to limit: 10).
-    const [songRes, playlistRes, albumRes] = await Promise.all([
+    const [songRes, playlistRes, albumRes, artistRes] = await Promise.all([
       this.api.get("/cloudsearch", {
         params: { keywords: query, type: 1, limit, offset, ...this.cookieParams },
       }),
@@ -153,6 +171,9 @@ export class NeteaseProvider implements MusicProvider {
       this.api.get("/cloudsearch", {
         params: { keywords: query, type: 10, limit, offset, ...this.cookieParams },
       }),
+      this.api.get("/cloudsearch", {
+        params: { keywords: query, type: 100, limit, offset, ...this.cookieParams },
+      }),
     ]);
 
     const songs: Song[] = mapNeteaseSongs(songRes.data?.result?.songs);
@@ -169,7 +190,9 @@ export class NeteaseProvider implements MusicProvider {
 
     const albums = mapNeteaseAlbums(albumRes.data?.result?.albums);
 
-    return { songs, playlists, albums };
+    const artists = mapNeteaseArtists(artistRes.data?.result?.artists);
+
+    return { songs, playlists, albums, artists };
   }
 
   async getSongUrl(songId: string, quality?: string): Promise<SongUrlResult | null> {
@@ -217,6 +240,69 @@ export class NeteaseProvider implements MusicProvider {
     return mapNeteaseSongs(res.data?.songs);
   }
 
+  async getArtistDetail(artistId: string): Promise<ArtistDetail | null> {
+    // /artists returns { artist, hotSongs }; the hot songs are fetched
+    // separately via /artist/songs (order=hot) so the artist page's three
+    // upstream calls stay independent of each other.
+    const res = await this.api.get("/artists", {
+      params: { id: artistId, ...this.cookieParams },
+    });
+    const a = res.data?.artist;
+    if (!a) return null;
+    return {
+      ...mapNeteaseArtists([a])[0],
+      description: a.briefDesc ?? "",
+    };
+  }
+
+  async getArtistSongs(artistId: string, limit = 50): Promise<Song[]> {
+    const res = await this.api.get("/artist/songs", {
+      params: {
+        id: artistId,
+        limit,
+        offset: 0,
+        order: "hot",
+        ...this.cookieParams,
+      },
+    });
+    return mapNeteaseSongs(res.data?.songs);
+  }
+
+  async getArtistAlbums(artistId: string, limit = 20): Promise<Album[]> {
+    const res = await this.api.get("/artist/album", {
+      params: { id: artistId, limit, offset: 0, ...this.cookieParams },
+    });
+    return mapNeteaseAlbums(res.data?.hotAlbums);
+  }
+
+  /**
+   * Full catalogue page for the artist page's "全部歌曲" list: /artist/songs
+   * supports real offset paging (Adele reports total 345 with more=true, and
+   * offset=50/100/150 each return a fresh slice of 50). order=hot keeps the page
+   * ordering identical to getArtistSongs so the hot preview and the full list
+   * are one continuous ranking.
+   */
+  async getArtistAllSongs(artistId: string, offset = 0, limit = 50): Promise<ArtistSongPage> {
+    const safeOffset = Math.max(0, Math.trunc(offset) || 0);
+    const safeLimit = Math.max(1, Math.min(Math.trunc(limit) || 50, 100));
+    const res = await this.api.get("/artist/songs", {
+      params: {
+        id: artistId,
+        limit: safeLimit,
+        offset: safeOffset,
+        order: "hot",
+        ...this.cookieParams,
+      },
+    });
+    const songs = mapNeteaseSongs(res.data?.songs);
+    const reported = Number(res.data?.total);
+    const total = Number.isFinite(reported) && reported > 0 ? reported : safeOffset + songs.length;
+    const more = res.data?.more;
+    const hasMore =
+      typeof more === "boolean" ? more : safeOffset + songs.length < total;
+    return { songs, total, hasMore };
+  }
+
   async getLyrics(songId: string): Promise<LyricLine[]> {
     const res = await this.api.get("/lyric", {
       params: { id: songId, ...this.cookieParams },

src/music/provider.ts

@@ -59,6 +59,34 @@ export interface Album {
   platform: Platform;
 }
 
+/** An artist / singer entity. Only sources with a real artist concept expose
+ *  these (NetEase, QQ); the others simply never return `SearchResult.artists`
+ *  and leave the optional provider methods unimplemented. */
+export interface Artist {
+  id: string;
+  name: string;
+  avatarUrl: string;
+  platform: Platform;
+  /** Alternate names / romanizations (NetEase alias, QQ other_name). */
+  aliases?: string[];
+  songCount?: number;
+  albumCount?: number;
+}
+
+export interface ArtistDetail extends Artist {
+  /** Short biography, when the source provides one. */
+  description?: string;
+}
+
+/** One page of an artist's COMPLETE catalogue (the "全部歌曲" list), as opposed
+ *  to `getArtistSongs`, which only ever returns the hot top-N. */
+export interface ArtistSongPage {
+  songs: Song[];
+  /** Total tracks the source reports for this artist (best effort). */
+  total: number;
+  hasMore: boolean;
+}
+
 export interface LyricLine {
   time: number; // seconds
   text: string;
@@ -69,6 +97,8 @@ export interface SearchResult {
   songs: Song[];
   playlists: Playlist[];
   albums: Album[];
+  /** Present only for sources with an artist entity (NetEase, QQ). */
+  artists?: Artist[];
 }
 
 export interface QrCodeResult {
@@ -108,4 +138,16 @@ export interface MusicProvider {
   getDailyRecommendSongs?(): Promise<Song[]>;
   getUserPlaylists?(): Promise<Playlist[]>;
   getPlaylistDetail?(playlistId: string): Promise<PlaylistDetail | null>;
+  getArtistDetail?(artistId: string): Promise<ArtistDetail | null>;
+  /** The artist's most popular tracks, best-first. */
+  getArtistSongs?(artistId: string, limit?: number): Promise<Song[]>;
+  /** One page of the artist's full catalogue, best-first. Sources that can only
+   *  expose a fixed top-N list leave this unimplemented (the route then 501s and
+   *  the web hides the "全部歌曲" section). */
+  getArtistAllSongs?(
+    artistId: string,
+    offset?: number,
+    limit?: number
+  ): Promise<ArtistSongPage>;
+  getArtistAlbums?(artistId: string, limit?: number): Promise<Album[]>;
 }

src/music/qq.test.ts

@@ -8,7 +8,7 @@ vi.mock("axios", () => ({
   default: { create: () => ({ get: mockGet, post: mockPost }) },
 }));
 
-import { mapQqAlbums, mapQqSongs, parseQqTrial, QQMusicProvider } from "./qq.js";
+import { mapQqAlbums, mapQqArtists, mapQqSongs, parseQqTrial, QQMusicProvider } from "./qq.js";
 
 describe("QQ adapter", () => {
   it("mapQqSongs maps QQMusicApi-style song entries", () => {
@@ -171,4 +171,306 @@ describe("QQMusicProvider.search pagination", () => {
     expect(songCall, "expected a client_search_cp song call").toBeTruthy();
     expect(songCall![1].params.p).toBe(2);
   });
+
+  it("adds the singer sub-request (search_type 1) to the same musicu batch", async () => {
+    musicuOk();
+    const p = new QQMusicProvider("http://x");
+    await p.search("周杰伦", 20, 0);
+
+    const d = musicuReqData();
+    expect(d.req_artist.param.search_type).toBe(1);
+    expect(d.req_artist.param.num_per_page).toBe(20);
+    expect(d.req_artist.param.page_num).toBe(1);
+  });
+
+  it("returns singers even when the song list is empty (no client_search_cp fallback)", async () => {
+    mockGet.mockImplementation(async (url: string) => {
+      if (url === "/cgi-bin/musicu.fcg") {
+        return {
+          data: {
+            req_0: { data: { body: { song: { list: [] } } } },
+            req_album: { data: { body: { album: { list: [] } } } },
+            req_playlist: { data: { body: { songlist: { list: [] } } } },
+            req_artist: {
+              data: { body: { singer: { list: [{ singerMID: "m1", singerName: "Adele", songNum: 88 }] } } },
+            },
+          },
+        };
+      }
+      return { data: {} };
+    });
+    const p = new QQMusicProvider("http://x");
+    const res = await p.search("Adele", 20, 0);
+
+    expect(res.songs).toEqual([]);
+    expect(res.artists).toEqual([
+      {
+        id: "m1",
+        name: "Adele",
+        avatarUrl: "https://y.gtimg.cn/music/photo_new/T001R500x500M000m1.jpg",
+        songCount: 88,
+        albumCount: undefined,
+        platform: "qq",
+      },
+    ]);
+    expect(mockGet.mock.calls.some((c: any[]) => c[0] === "/soso/fcgi-bin/client_search_cp")).toBe(false);
+  });
+});
+
+describe("mapQqArtists (singer search + detail)", () => {
+  it("maps singer list entries and builds the 500px portrait from the MID", () => {
+    const out = mapQqArtists([
+      {
+        singerMID: "abc",
+        singerName: "周杰伦",
+        singerPic: "http://y.gtimg.cn/music/photo_new/T001R150x150M000abc_11.jpg",
+        songNum: 500,
+        albumNum: 30,
+      },
+    ]);
+    expect(out).toEqual([
+      {
+        id: "abc",
+        name: "周杰伦",
+        avatarUrl: "https://y.gtimg.cn/music/photo_new/T001R500x500M000abc.jpg",
+        songCount: 500,
+        albumCount: 30,
+        platform: "qq",
+      },
+    ]);
+  });
+
+  it("falls back to the given picture when no MID is present", () => {
+    const out = mapQqArtists([
+      { singerID: 42, singerName: "Y", singerPic: "https://y.gtimg.cn/music/photo_new/x.jpg" },
+    ]);
+    expect(out).toEqual([
+      {
+        id: "42",
+        name: "Y",
+        avatarUrl: "https://y.gtimg.cn/music/photo_new/x.jpg",
+        songCount: undefined,
+        albumCount: undefined,
+        platform: "qq",
+      },
+    ]);
+  });
+
+  it("drops entries without an id or name and tolerates empty input", () => {
+    expect(mapQqArtists([{ singerName: "no id" }, { singerMID: "x" }])).toEqual([]);
+    expect(mapQqArtists([])).toEqual([]);
+    expect(mapQqArtists(null as any)).toEqual([]);
+    expect(mapQqArtists(undefined as any)).toEqual([]);
+  });
+});
+
+describe("QQMusicProvider.getArtistAllSongs (album aggregation)", () => {
+  beforeEach(() => {
+    mockGet.mockReset();
+  });
+
+  function songRaw(mid: string, title: string) {
+    return { mid, title, singer: [{ name: "Adele" }], album: { mid: "al1", name: "Album" }, interval: 200 };
+  }
+
+  /** singer detail (top 50) + album search pages + per-album song lists. */
+  function mockCatalogue(opts: {
+    hot?: any[];
+    albumSearch?: (page: number) => any[];
+    albumSongs?: Record<string, any[]>;
+    albumInfoFails?: boolean;
+  }) {
+    mockGet.mockImplementation(async (url: string, cfg: any) => {
+      if (url === "/cgi-bin/musicu.fcg") {
+        const data = JSON.parse(cfg.params.data);
+        if (data.req_0) {
+          return {
+            data: {
+              req_0: {
+                data: {
+                  singer_info: { mid: "m1", name: "Adele" },
+                  total_song: 250,
+                  songlist: opts.hot ?? [],
+                },
+              },
+            },
+          };
+        }
+        const page = data.req_album?.param?.page_num ?? 1;
+        return {
+          data: {
+            req_album: { data: { body: { album: { list: (opts.albumSearch ?? (() => []))(page) } } } },
+          },
+        };
+      }
+      if (url === "/getAlbumInfo") {
+        if (opts.albumInfoFails) throw new Error("album down");
+        return { data: { response: { data: { list: opts.albumSongs?.[cfg.params.albummid] ?? [] } } } };
+      }
+      return { data: {} };
+    });
+  }
+
+  it("merges the hot tracks with every album track, de-duplicated and paged", async () => {
+    mockCatalogue({
+      hot: [songRaw("s1", "Hot 1"), songRaw("s2", "Hot 2")],
+      albumSearch: () => [
+        { albumMID: "al1", albumName: "A", singerMID: "m1" },
+        { albumMID: "al2", albumName: "B", singerMID: "m1" },
+        { albumMID: "other", albumName: "C", singerMID: "m9" },
+      ],
+      albumSongs: {
+        al1: [songRaw("s1", "Hot 1"), songRaw("s3", "Album 1")],
+        al2: [songRaw("s4", "Album 2")],
+      },
+    });
+    const p = new QQMusicProvider("http://x");
+
+    const page = await p.getArtistAllSongs("m1", 0, 10);
+
+    expect(page.songs.map((s) => s.id)).toEqual(["s1", "s2", "s3", "s4"]);
+    expect(page.total).toBe(4);
+    expect(page.hasMore).toBe(false);
+
+    // The unrelated album (singerMID m9) is never fetched.
+    const albumCalls = mockGet.mock.calls.filter((c: any[]) => c[0] === "/getAlbumInfo");
+    expect(albumCalls.map((c: any[]) => c[1].params.albummid).sort()).toEqual(["al1", "al2"]);
+    // Page 2 of the album search returns the same list → nothing new → stop.
+    const searchPages = mockGet.mock.calls
+      .filter((c: any[]) => c[0] === "/cgi-bin/musicu.fcg")
+      .map((c: any[]) => JSON.parse(c[1].params.data).req_album?.param?.page_num)
+      .filter(Boolean);
+    expect(searchPages).toEqual([1, 2]);
+  });
+
+  it("slices pages with offset/limit and reports hasMore", async () => {
+    mockCatalogue({
+      hot: [songRaw("s1", "1"), songRaw("s2", "2"), songRaw("s3", "3")],
+      albumSearch: () => [],
+    });
+    const p = new QQMusicProvider("http://x");
+
+    const first = await p.getArtistAllSongs("m1", 0, 2);
+    expect(first.songs.map((s) => s.id)).toEqual(["s1", "s2"]);
+    expect(first.total).toBe(3);
+    expect(first.hasMore).toBe(true);
+
+    const second = await p.getArtistAllSongs("m1", 2, 2);
+    expect(second.songs.map((s) => s.id)).toEqual(["s3"]);
+    expect(second.hasMore).toBe(false);
+  });
+
+  it("caches the assembled catalogue (one upstream sweep per singer)", async () => {
+    mockCatalogue({
+      hot: [songRaw("s1", "1")],
+      albumSearch: () => [{ albumMID: "al1", albumName: "A", singerMID: "m1" }],
+      albumSongs: { al1: [songRaw("s9", "9")] },
+    });
+    const p = new QQMusicProvider("http://x");
+
+    await p.getArtistAllSongs("m1", 0, 50);
+    const callsAfterFirst = mockGet.mock.calls.length;
+    const page = await p.getArtistAllSongs("m1", 0, 50);
+
+    expect(mockGet.mock.calls.length).toBe(callsAfterFirst);
+    expect(page.songs.map((s) => s.id)).toEqual(["s1", "s9"]);
+  });
+
+  it("degrades to the hot list when album lookups fail", async () => {
+    mockCatalogue({
+      hot: [songRaw("s1", "1")],
+      albumSearch: () => [{ albumMID: "al1", albumName: "A", singerMID: "m1" }],
+      albumInfoFails: true,
+    });
+    const p = new QQMusicProvider("http://x");
+
+    const page = await p.getArtistAllSongs("m1", 0, 50);
+
+    expect(page.songs.map((s) => s.id)).toEqual(["s1"]);
+    expect(page.total).toBe(1);
+  });
+
+  it("retries a failed album search once before giving up", async () => {
+    let albumSearchCalls = 0;
+    mockGet.mockImplementation(async (url: string, cfg: any) => {
+      if (url === "/cgi-bin/musicu.fcg") {
+        const data = JSON.parse(cfg.params.data);
+        if (data.req_0) {
+          return {
+            data: {
+              req_0: {
+                data: { singer_info: { mid: "m1", name: "Adele" }, songlist: [songRaw("s1", "1")] },
+              },
+            },
+          };
+        }
+        albumSearchCalls++;
+        if (albumSearchCalls === 1) throw new Error("blip");
+        const list =
+          data.req_album.param.page_num === 1
+            ? [{ albumMID: "al1", albumName: "A", singerMID: "m1" }]
+            : [];
+        return { data: { req_album: { data: { body: { album: { list } } } } } };
+      }
+      if (url === "/getAlbumInfo") {
+        return { data: { response: { data: { list: [songRaw("s9", "9")] } } } };
+      }
+      return { data: {} };
+    });
+    const p = new QQMusicProvider("http://x");
+
+    const page = await p.getArtistAllSongs("m1", 0, 50);
+
+    const page1Calls = mockGet.mock.calls.filter((c: any[]) => {
+      if (c[0] !== "/cgi-bin/musicu.fcg") return false;
+      return JSON.parse(c[1].params.data).req_album?.param?.page_num === 1;
+    }).length;
+    expect(page1Calls).toBe(2);
+    expect(page.songs.map((s) => s.id)).toEqual(["s1", "s9"]);
+  });
+
+  it("does not cache a catalogue degraded by a failed album search", async () => {
+    let albumSearchFails = true;
+    mockGet.mockImplementation(async (url: string, cfg: any) => {
+      if (url === "/cgi-bin/musicu.fcg") {
+        const data = JSON.parse(cfg.params.data);
+        if (data.req_0) {
+          return {
+            data: {
+              req_0: {
+                data: {
+                  singer_info: { mid: "m1", name: "Adele" },
+                  songlist: [songRaw("s1", "1")],
+                },
+              },
+            },
+          };
+        }
+        if (albumSearchFails) throw new Error("upstream hiccup");
+        return {
+          data: {
+            req_album: {
+              data: { body: { album: { list: [{ albumMID: "al1", albumName: "A", singerMID: "m1" }] } } },
+            },
+          },
+        };
+      }
+      if (url === "/getAlbumInfo") {
+        return { data: { response: { data: { list: [songRaw("s9", "9")] } } } };
+      }
+      return { data: {} };
+    });
+    const p = new QQMusicProvider("http://x");
+
+    // The album search fails twice (call + retry) → hot list only, and the
+    // degraded result must not be cached.
+    const degraded = await p.getArtistAllSongs("m1", 0, 50);
+    expect(degraded.songs.map((s) => s.id)).toEqual(["s1"]);
+    expect(degraded.total).toBe(1);
+
+    albumSearchFails = false;
+    const full = await p.getArtistAllSongs("m1", 0, 50);
+    expect(full.songs.map((s) => s.id)).toEqual(["s1", "s9"]);
+    expect(full.total).toBe(2);
+  });
 });

src/music/qq.ts

@@ -10,6 +10,9 @@ import type {
   QrCodeResult,
   AuthStatus,
   Album,
+  Artist,
+  ArtistDetail,
+  ArtistSongPage,
 } from "./provider.js";
 import { parseLyrics } from "./netease.js";
 
@@ -40,6 +43,28 @@ const qqFavApi = axios.create({
   headers: { referer: "https://y.qq.com/" },
 });
 
+/** True when a search_type=2 album search entry really belongs to this singer.
+ *  QQ fills singerMID for most albums; older entries only carry singer_list. */
+function isArtistAlbum(a: any, artistId: string): boolean {
+  const mid = a?.singerMID ?? a?.singer_mid;
+  if (mid) return String(mid) === artistId;
+  const singers = a?.singer_list ?? a?.singer ?? [];
+  return (
+    Array.isArray(singers) &&
+    singers.some((s: any) => String(s?.mid ?? s?.singerMID ?? "") === artistId)
+  );
+}
+
+/** Assembling a QQ singer's full catalogue costs one album-song request per
+ *  album, so the merged list is memoised per singer for a while. */
+const ARTIST_CATALOG_TTL_MS = 10 * 60 * 1000;
+const ARTIST_CATALOG_MAX_ENTRIES = 20;
+/** Album search pages to walk (50 albums each) and the hard cap on albums we
+ *  are willing to fetch songs for. */
+const ARTIST_ALBUM_MAX_PAGES = 3;
+const ARTIST_ALBUM_MAX = 50;
+const ARTIST_ALBUM_CONCURRENCY = 5;
+
 export function mapQqSongs(raw: any[] | null | undefined): Song[] {
   if (!Array.isArray(raw)) return [];
   return raw.map((s) => {
@@ -91,6 +116,33 @@ export function mapQqAlbums(raw: any[] | null | undefined): Album[] {
   });
 }
 
+/** QQ hands out http:// image URLs; the WebUI is often served over https. */
+function httpsImage(url: unknown): string {
+  return typeof url === "string" ? url.replace(/^http:\/\//i, "https://") : "";
+}
+
+export function mapQqArtists(raw: any[] | null | undefined): Artist[] {
+  if (!Array.isArray(raw)) return [];
+  return raw
+    .map((a) => {
+      const id = String(a.singerMID ?? a.singer_mid ?? a.mid ?? a.singerID ?? a.singerId ?? "");
+      const mid = a.singerMID ?? a.singer_mid ?? a.mid;
+      return {
+        id,
+        name: a.singerName ?? a.name ?? "",
+        // Search returns a 150px portrait; the MID builds the 500px one the
+        // artist page wants, so prefer it and only fall back to the given URL.
+        avatarUrl: mid
+          ? `https://y.gtimg.cn/music/photo_new/T001R500x500M000${mid}.jpg`
+          : httpsImage(a.singerPic ?? a.pic),
+        songCount: a.songNum ?? undefined,
+        albumCount: a.albumNum ?? undefined,
+        platform: "qq" as const,
+      };
+    })
+    .filter((a) => a.id && a.name);
+}
+
 function computeGtk(pSkey: string): number {
   let hash = 5381;
   for (let i = 0; i < pSkey.length; i++) {
@@ -195,6 +247,13 @@ export class QQMusicProvider implements MusicProvider {
           method: "DoSearchForQQMusicDesktop",
           param: { query, num_per_page: numPerPage, page_num: pageNum, search_type: 3 },
         },
+        // search_type 1 = singers. Folded into the same batch so artist search
+        // costs no extra round-trip.
+        req_artist: {
+          module: "music.search.SearchCgiService",
+          method: "DoSearchForQQMusicDesktop",
+          param: { query, num_per_page: numPerPage, page_num: pageNum, search_type: 1 },
+        },
       });
       const res = await qqMusicuApi.get("/cgi-bin/musicu.fcg", {
         params: { format: "json", data: reqData },
@@ -202,7 +261,11 @@ export class QQMusicProvider implements MusicProvider {
 
       const songList: any[] =
         res.data?.req_0?.data?.body?.song?.list ?? [];
-      if (songList.length === 0) return null;
+      const artistList: any[] =
+        res.data?.req_artist?.data?.body?.singer?.list ?? [];
+      // Only fall back to the older client_search_cp path when the batch came
+      // back completely empty — an artist-only hit is a real result.
+      if (songList.length === 0 && artistList.length === 0) return null;
 
       const songs = mapQqSongs(songList);
 
@@ -218,7 +281,7 @@ export class QQMusicProvider implements MusicProvider {
         platform: "qq" as const,
       }));
 
-      return { songs, playlists, albums };
+      return { songs, playlists, albums, artists: mapQqArtists(artistList) };
     } catch {
       return null;
     }
@@ -470,6 +533,196 @@ export class QQMusicProvider implements MusicProvider {
     return mapQqSongs(res.data?.response?.data?.list ?? []);
   }
 
+  /** music.web_singer_info_svr / get_singer_detail_info — singer info plus up
+   *  to `num` of their hottest songs (sort 5 = popularity). Returns null on any
+   *  failure so callers can degrade instead of throwing. */
+  private async fetchSingerDetail(singerMid: string, num: number): Promise<any | null> {
+    try {
+      const reqData = JSON.stringify({
+        req_0: {
+          module: "music.web_singer_info_svr",
+          method: "get_singer_detail_info",
+          param: {
+            singermid: singerMid,
+            sort: 5,
+            num: Math.max(1, Math.min(num, 50)),
+            begin: 0,
+          },
+        },
+      });
+      const res = await qqMusicuApi.get("/cgi-bin/musicu.fcg", {
+        params: { format: "json", data: reqData },
+      });
+      return res.data?.req_0?.data ?? null;
+    } catch {
+      return null;
+    }
+  }
+
+  async getArtistDetail(artistId: string): Promise<ArtistDetail | null> {
+    const data = await this.fetchSingerDetail(artistId, 1);
+    if (!data) return null;
+    const info = data.singer_info ?? {};
+    const mid = String(info.mid ?? artistId);
+    if (!mid) return null;
+    return {
+      id: mid,
+      name: info.name ?? "",
+      avatarUrl: `https://y.gtimg.cn/music/photo_new/T001R500x500M000${mid}.jpg`,
+      aliases: info.other_name ? [String(info.other_name)] : [],
+      songCount: data.total_song ?? undefined,
+      albumCount: data.total_album ?? undefined,
+      platform: "qq" as const,
+      description: data.singer_brief ?? "",
+    };
+  }
+
+  async getArtistSongs(artistId: string, limit = 50): Promise<Song[]> {
+    const data = await this.fetchSingerDetail(artistId, limit);
+    return mapQqSongs(data?.songlist ?? []);
+  }
+
+  /**
+   * One page of the singer's full catalogue. get_singer_detail_info ignores its
+   * `begin` parameter (begin=0/50/100 all return the same top 50 — verified
+   * 2026-10) and QQ has no working singer-song-list endpoint, so the catalogue
+   * is assembled from every album the singer owns: the hot 50 first (they rank
+   * best) followed by the album tracks, de-duplicated by songmid.
+   */
+  async getArtistAllSongs(artistId: string, offset = 0, limit = 50): Promise<ArtistSongPage> {
+    const catalogue = await this.buildArtistCatalog(artistId);
+    const safeOffset = Math.max(0, Math.trunc(offset) || 0);
+    const safeLimit = Math.max(1, Math.min(Math.trunc(limit) || 50, 100));
+    const songs = catalogue.slice(safeOffset, safeOffset + safeLimit);
+    return {
+      songs,
+      total: catalogue.length,
+      hasMore: safeOffset + songs.length < catalogue.length,
+    };
+  }
+
+  /** Memoised full catalogues, keyed by singer MID (see ARTIST_CATALOG_TTL_MS). */
+  private artistCatalog = new Map<string, { at: number; songs: Song[] }>();
+
+  private async buildArtistCatalog(artistId: string): Promise<Song[]> {
+    const cached = this.artistCatalog.get(artistId);
+    if (cached && Date.now() - cached.at < ARTIST_CATALOG_TTL_MS) return cached.songs;
+
+    const merged: Song[] = [];
+    const seen = new Set<string>();
+    const push = (song: Song) => {
+      if (!song.id || seen.has(song.id)) return;
+      seen.add(song.id);
+      merged.push(song);
+    };
+
+    for (const song of await this.getArtistSongs(artistId, 50)) push(song);
+
+    // null = the album search could not be enumerated (transient upstream
+    // failure). The hot list is still returned, but such a degraded catalogue
+    // must NOT be cached: a 10-minute cache would silently turn "play the whole
+    // singer" into "play the hot 50".
+    const albumIds = await this.fetchArtistAlbumIds(artistId);
+    let albumFetchFailed = false;
+    for (let i = 0; albumIds && i < albumIds.length; i += ARTIST_ALBUM_CONCURRENCY) {
+      const batch = albumIds.slice(i, i + ARTIST_ALBUM_CONCURRENCY);
+      const lists = await Promise.all(
+        batch.map((mid) =>
+          this.getAlbumSongs(mid).catch(() => {
+            albumFetchFailed = true;
+            return [] as Song[];
+          })
+        )
+      );
+      for (const list of lists) {
+        for (const song of list) push(song);
+      }
+    }
+
+    if (albumIds !== null && !albumFetchFailed) {
+      if (this.artistCatalog.size >= ARTIST_CATALOG_MAX_ENTRIES) {
+        const oldest = this.artistCatalog.keys().next().value;
+        if (oldest !== undefined) this.artistCatalog.delete(oldest);
+      }
+      this.artistCatalog.set(artistId, { at: Date.now(), songs: merged });
+    }
+    return merged;
+  }
+
+  /** Every album MID the singer owns, via paged album search (see getArtistAlbums).
+   *  null = the search failed, so the album list is unknown (not empty). */
+  private async fetchArtistAlbumIds(artistId: string): Promise<string[] | null> {
+    const detail = await this.fetchSingerDetail(artistId, 1);
+    const name = detail?.singer_info?.name;
+    if (!name) return [];
+    const ids: string[] = [];
+    const seen = new Set<string>();
+    for (let page = 1; page <= ARTIST_ALBUM_MAX_PAGES; page++) {
+      // One immediate retry absorbs a transient upstream hiccup, which would
+      // otherwise look exactly like "this singer has no albums".
+      const list =
+        (await this.searchArtistAlbums(name, page, 50)) ?? (await this.searchArtistAlbums(name, page, 50));
+      if (list === null) return null;
+      if (list.length === 0) break;
+      let added = 0;
+      for (const entry of list) {
+        if (!isArtistAlbum(entry, artistId)) continue;
+        const mid = String(entry?.albumMID ?? entry?.album_mid ?? "");
+        if (mid && !seen.has(mid)) {
+          seen.add(mid);
+          ids.push(mid);
+          added++;
+        }
+      }
+      if (ids.length >= ARTIST_ALBUM_MAX) break;
+      // A page that adds nothing means the search has drifted off this singer.
+      if (added === 0) break;
+    }
+    return ids.slice(0, ARTIST_ALBUM_MAX);
+  }
+
+  /** search_type=2 album search for a singer name — raw entries, null on failure. */
+  private async searchArtistAlbums(
+    name: string,
+    pageNum: number,
+    numPerPage: number
+  ): Promise<any[] | null> {
+    try {
+      const reqData = JSON.stringify({
+        req_album: {
+          module: "music.search.SearchCgiService",
+          method: "DoSearchForQQMusicDesktop",
+          param: {
+            query: name,
+            num_per_page: Math.max(10, Math.min(numPerPage, 50)),
+            page_num: pageNum,
+            search_type: 2,
+          },
+        },
+      });
+      const res = await qqMusicuApi.get("/cgi-bin/musicu.fcg", {
+        params: { format: "json", data: reqData },
+      });
+      return res.data?.req_album?.data?.body?.album?.list ?? [];
+    } catch {
+      return null;
+    }
+  }
+
+  async getArtistAlbums(artistId: string, limit = 20): Promise<Album[]> {
+    // QQ has no working "albums for this singer MID" endpoint: the homepage tab
+    // API returns a null AlbumList and music.web_singer_info_svr/get_singer_album
+    // returns an empty list even with a logged-in cookie (verified 2026-10).
+    // The album shelf is therefore built from the album search for the singer's
+    // name, filtered down to entries whose singerMID actually matches.
+    const detail = await this.fetchSingerDetail(artistId, 1);
+    const name = detail?.singer_info?.name;
+    if (!name) return [];
+    const list = (await this.searchArtistAlbums(name, 1, limit)) ?? [];
+    const mine = list.filter((a: any) => isArtistAlbum(a, artistId));
+    return mapQqAlbums(mine).slice(0, limit);
+  }
+
   async getLyrics(songId: string): Promise<LyricLine[]> {
     const res = await this.api.get("/getLyric", {
       params: { songmid: songId, ...this.cookieParams },