fix: scope voice response parsing to its backend lifetime

src/voice/realtimeBackend.js

@@ -7,9 +7,12 @@ export function createRealtimeBackend({
   tokenTransport = (...args) => fetch(...args),
   connectionTransport = (...args) => fetch(...args),
   timeoutMs = 30_000,
+  signal: lifetime,
 } = {}) {
   const scoped = (signal) =>
-    AbortSignal.any([signal, AbortSignal.timeout(timeoutMs)].filter(Boolean));
+    AbortSignal.any(
+      [lifetime, signal, AbortSignal.timeout(timeoutMs)].filter(Boolean),
+    );
   return Object.freeze({
     protocol: 'openai-realtime',
     async requestToken({ tier = DEFAULT_VOICE_TIER, signal } = {}) {

src/voice/realtimeBackend.test.mjs

@@ -89,12 +89,13 @@ test('cancellation rejects late token and SDP bodies without promoting a stopped
       release = resolve;
     });
     const backend = createRealtimeBackend({
+      signal: lifetime.signal,
       tokenTransport: async () => ({ ok: true, json: () => pending }),
       connectionTransport: async () => ({ ok: true, text: () => pending }),
     });
     const result =
       phase === 'token'
-        ? backend.requestToken({ signal: lifetime.signal })
+        ? backend.requestToken()
         : backend.negotiate({
             credential: { token: 'test' },
             offerSdp: 'offer',

src/voice/realtimeController.js

@@ -2598,4 +2598,3 @@ function resetVoiceVisualizerBars(bars) {
     bar.style.removeProperty('--audio-opacity');
   }
 }
-