feat: add bot core — command parser, BotInstance with full commands, BotManager

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/bot/commands.ts

@@ -0,0 +1,60 @@
+export interface ParsedCommand {
+  name: string;
+  args: string;
+  rawArgs: string[];
+  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",
+]);
+
+export const ADMIN_COMMANDS = new Set([
+  "stop", "clear", "move", "vol", "mode", "follow", "remove",
+]);
+
+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);
+}