fix: update react-native-audio-api usage for v0.11.6 API changes

- AudioRecorder constructor no longer accepts options
- Move sampleRate/bufferLength/channelCount to onAudioReady options
- Rename 'allowBluetooth' iOS option to 'allowBluetoothHFP'

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: msluszniak

apps/llm/app/voice_chat/index.tsx

@@ -37,13 +37,7 @@ function VoiceChatScreen() {
   const [isRecording, setIsRecording] = useState(false);
   const [liveTranscription, setLiveTranscription] = useState('');
 
-  const [recorder] = useState(
-    () =>
-      new AudioRecorder({
-        sampleRate: 16000,
-        bufferLengthInSamples: 1600,
-      })
-  );
+  const [recorder] = useState(() => new AudioRecorder());
 
   const { setGlobalGenerating } = useContext(GeneratingContext);
 
@@ -60,7 +54,7 @@ function VoiceChatScreen() {
     AudioManager.setAudioSessionOptions({
       iosCategory: 'playAndRecord',
       iosMode: 'spokenAudio',
-      iosOptions: ['allowBluetooth', 'defaultToSpeaker'],
+      iosOptions: ['allowBluetoothHFP', 'defaultToSpeaker'],
     });
     AudioManager.requestRecordingPermissions();
   }, []);
@@ -74,9 +68,12 @@ function VoiceChatScreen() {
       setIsRecording(true);
       setLiveTranscription('');
 
-      recorder.onAudioReady(({ buffer }) => {
-        speechToText.streamInsert(buffer.getChannelData(0));
-      });
+      recorder.onAudioReady(
+        { sampleRate: 16000, bufferLength: 1600, channelCount: 1 },
+        ({ buffer }) => {
+          speechToText.streamInsert(buffer.getChannelData(0));
+        }
+      );
       recorder.start();
 
       let finalResult = '';