waitForGeneration racing

Author: simllll

agents/src/voice/speech_handle.ts

@@ -165,9 +165,6 @@ export class SpeechHandle {
 
   /** @internal */
   _authorizeGeneration(): void {
-    if (this.interruptFut.done) {
-      return;
-    }
     const fut = new Future<void>();
     this.generations.push(fut);
     this.authorizedEvent.set();
@@ -194,7 +191,7 @@ export class SpeechHandle {
     if (!generation) {
       throw new Error(`Generation at index ${index} not found.`);
     }
-    return generation.await;
+    return Promise.race([generation.await, this.interruptFut.await]);
   }
 
   /** @internal */