fix(voice): cleanup audio context on processing init failure

apps/client/src/components/voice-provider/index.tsx

@@ -415,6 +415,28 @@ const VoiceProvider = memo(({ children }: TVoiceProviderProps) => {
     let rnnoiseNode: AudioWorkletNode | undefined;
     let gateNode: AudioWorkletNode | undefined;
 
+    const cleanupLocalProcessing = async () => {
+      try {
+        gateNode?.disconnect();
+        rnnoiseNode?.disconnect();
+        deepFilterNode?.disconnect();
+        source.disconnect();
+        dest.disconnect();
+        deepFilterCore?.destroy?.();
+      } catch {
+        // ignore cleanup failures
+      }
+
+      try {
+        if (ctx.state !== 'closed') {
+          await ctx.close();
+        }
+      } catch {
+        // ignore context close failures
+      }
+    };
+
+    try {
       if (useDeepFilterNet) {
         const deepFilterSuppression = sensitivityToDeepFilterLevel(
           devices.voiceSensitivity ?? 70
@@ -488,6 +510,10 @@ const VoiceProvider = memo(({ children }: TVoiceProviderProps) => {
       });
 
       return dest.stream;
+    } catch (err) {
+      await cleanupLocalProcessing();
+      throw err;
+    }
   }, [devices.noiseSuppressionDeepFilterNet, devices.noiseSuppressionRnnoise, devices.keyboardSuppression, devices.voiceSensitivity, cleanupAudioProcessing]);
 
   const acquireMicStream = useCallback(async (): Promise<{ stream: MediaStream; track: MediaStreamTrack; raw: MediaStream }> => {