feat: stop command (stopAllAudio), sequential audio queue with stop support

Co-authored-by: Cursor <cursoragent@cursor.com>

src/bot/audioProcedure.ts

@@ -22,6 +22,7 @@ export class AudioProcedure {
   private _initScriptInjected: boolean = false;
   private _audioQueue: Array<{ audioData: string; format: 'mp3' | 'wav' | 'pcm' }> = [];
   private _isPlaying: boolean = false;
+  private _stopRequested: boolean = false;
 
   constructor(page: Page, logger: Logger) {
     this._page = page;
@@ -138,8 +139,9 @@ export class AudioProcedure {
   private async _processAudioQueue(): Promise<void> {
     if (this._isPlaying) return;
     this._isPlaying = true;
+    this._stopRequested = false;
 
-    while (this._audioQueue.length > 0) {
+    while (this._audioQueue.length > 0 && !this._stopRequested) {
       const item = this._audioQueue.shift()!;
       try {
         await this._playAudioInternal(item.audioData, item.format);
@@ -148,7 +150,37 @@ export class AudioProcedure {
       }
     }
 
+    if (this._stopRequested) {
+      this._audioQueue = [];
+      this._logger.info('Audio queue cleared due to stop request');
+    }
+
     this._isPlaying = false;
+    this._stopRequested = false;
+  }
+
+  /**
+   * Stop all audio immediately: stop current playback and clear the queue.
+   * Called when a user says "<botname> STOP" or similar.
+   */
+  async stopAllAudio(): Promise<void> {
+    this._logger.info('Stop all audio requested');
+    this._stopRequested = true;
+    this._audioQueue = [];
+
+    try {
+      await this._page.evaluate(() => {
+        const ctx = (window as any).__ttsAudioContext as AudioContext;
+        if (ctx) {
+          // Suspend immediately stops all audio output
+          ctx.suspend();
+          // Resume after a short delay so future audio can play
+          setTimeout(() => ctx.resume(), 100);
+        }
+      });
+    } catch {
+      // Page might not be ready
+    }
   }
 
   /**

src/bot/orchestrator.ts

@@ -334,6 +334,13 @@ export class BotOrchestrator {
           this.sendChatMessageToMeeting(chatMsg.text);
           break;
 
+        case 'stopAudio':
+          this._logger.info('Stop audio command received from Gateway');
+          if (this._audioProcedure) {
+            this._audioProcedure.stopAllAudio();
+          }
+          break;
+
         case 'pong':
           // Heartbeat response
           break;