fix: address sender-side voice ducking with voice processing controls

Disable AGC by default to prevent Chrome from crushing mic sensitivity
when stream audio is playing. Add user-facing toggles for echo
cancellation, noise suppression, and auto gain control. Decouple voice
and stream audio by routing through ctx.destination instead of shared
compressor. Track mic stream generation to re-publish when settings change.

packages/web/src/stores/voiceStore.js

@@ -131,7 +131,11 @@ export const useVoiceStore = create()(persist((set, get) => ({
     setFocusedParticipant: (id) => set({ focusedParticipantId: id }),
     setVideoQuality: (quality) => set({ videoQuality: quality }),
     noiseSuppression: true,
+    echoCancellation: true,
+    autoGainControl: false,
     toggleNoiseSuppression: () => set((state) => ({ noiseSuppression: !state.noiseSuppression })),
+    setEchoCancellation: (enabled) => set({ echoCancellation: enabled }),
+    setAutoGainControl: (enabled) => set({ autoGainControl: enabled }),
     deafenedUserIds: new Set(),
     setUserDeafened: (userId, deafened) => {
         set((state) => {
@@ -203,11 +207,15 @@ export const useVoiceStore = create()(persist((set, get) => ({
     }),
 }), {
     name: 'opencord-voice-settings',
-    version: 1,
+    version: 2,
     migrate: (persistedState, version) => {
         if (version === 0) {
             persistedState.streamAttenuationEnabled = false;
         }
+        if (version < 2) {
+            persistedState.echoCancellation = true;
+            persistedState.autoGainControl = false;
+        }
         return persistedState;
     },
     storage: createJSONStorage(() => localStorage),
@@ -222,6 +230,8 @@ export const useVoiceStore = create()(persist((set, get) => ({
         outputDeviceId: state.outputDeviceId,
         videoQuality: state.videoQuality,
         noiseSuppression: state.noiseSuppression,
+        echoCancellation: state.echoCancellation,
+        autoGainControl: state.autoGainControl,
         streamAttenuationEnabled: state.streamAttenuationEnabled,
         streamAttenuationStrength: state.streamAttenuationStrength,
     }),

packages/web/src/stores/voiceStore.ts

@@ -62,7 +62,11 @@ interface VoiceState {
   setFocusedParticipant: (id: string | null) => void;
   setVideoQuality: (quality: '1080p' | '1080p60' | '720p' | '720p60' | '540p' | '360p') => void;
   noiseSuppression: boolean;
+  echoCancellation: boolean;
+  autoGainControl: boolean;
   toggleNoiseSuppression: () => void;
+  setEchoCancellation: (enabled: boolean) => void;
+  setAutoGainControl: (enabled: boolean) => void;
   deafenedUserIds: Set<string>;
   setUserDeafened: (userId: string, deafened: boolean) => void;
   // WebSocket-based voice user status (visible without joining LiveKit)
@@ -221,7 +225,11 @@ export const useVoiceStore = create<VoiceState>()(
       setFocusedParticipant: (id) => set({ focusedParticipantId: id }),
       setVideoQuality: (quality) => set({ videoQuality: quality }),
       noiseSuppression: true,
+      echoCancellation: true,
+      autoGainControl: false,
       toggleNoiseSuppression: () => set((state) => ({ noiseSuppression: !state.noiseSuppression })),
+      setEchoCancellation: (enabled) => set({ echoCancellation: enabled }),
+      setAutoGainControl: (enabled) => set({ autoGainControl: enabled }),
       deafenedUserIds: new Set(),
       setUserDeafened: (userId, deafened) => {
         set((state) => {
@@ -296,11 +304,15 @@ export const useVoiceStore = create<VoiceState>()(
     }),
     {
       name: 'opencord-voice-settings',
-      version: 1,
+      version: 2,
       migrate: (persistedState: any, version: number) => {
         if (version === 0) {
           persistedState.streamAttenuationEnabled = false;
         }
+        if (version < 2) {
+          persistedState.echoCancellation = true;
+          persistedState.autoGainControl = false;
+        }
         return persistedState;
       },
       storage: createJSONStorage(() => localStorage),
@@ -315,6 +327,8 @@ export const useVoiceStore = create<VoiceState>()(
         outputDeviceId: state.outputDeviceId,
         videoQuality: state.videoQuality,
         noiseSuppression: state.noiseSuppression,
+        echoCancellation: state.echoCancellation,
+        autoGainControl: state.autoGainControl,
         streamAttenuationEnabled: state.streamAttenuationEnabled,
         streamAttenuationStrength: state.streamAttenuationStrength,
       }),