Add Micro auto

frontend/src/App.jsx

@@ -101,6 +101,7 @@ export default function App() {
   const audioContextRef = useRef(null)
   const analyserRef = useRef(null)
   const sourceNodeRef = useRef(null)
+  const monitorGainRef = useRef(null)
   const animationFrameRef = useRef(null)
   const silenceStartedAtRef = useRef(null)
   const hasSpeechInSegmentRef = useRef(false)
@@ -282,6 +283,10 @@ export default function App() {
       sourceNodeRef.current.disconnect()
       sourceNodeRef.current = null
     }
+    if (monitorGainRef.current) {
+      monitorGainRef.current.disconnect()
+      monitorGainRef.current = null
+    }
     if (audioContextRef.current) {
       audioContextRef.current.close().catch(() => {})
       audioContextRef.current = null
@@ -455,16 +460,25 @@ export default function App() {
           autoGainControl: true,
         },
       })
-      const audioContext = new window.AudioContext()
+      const AudioContextClass = window.AudioContext || window.webkitAudioContext
+      const audioContext = new AudioContextClass()
+      if (audioContext.state === 'suspended') {
+        await audioContext.resume()
+      }
       const analyser = audioContext.createAnalyser()
       analyser.fftSize = 2048
       analyser.smoothingTimeConstant = 0.85
       const sourceNode = audioContext.createMediaStreamSource(stream)
+      const monitorGain = audioContext.createGain()
+      monitorGain.gain.value = 0
       sourceNode.connect(analyser)
+      analyser.connect(monitorGain)
+      monitorGain.connect(audioContext.destination)
 
       audioContextRef.current = audioContext
       analyserRef.current = analyser
       sourceNodeRef.current = sourceNode
+      monitorGainRef.current = monitorGain
       mediaStreamRef.current = stream
       setIsAutoListening(true)
       setVoiceStatus('Micro actif. Parle quand tu veux, j’enverrai après 2,5 s de silence.')