refactor(call): move noise-suppression toggle out of the call bar

Default flipped to off so voice doesn't get coloured by browser NS on
first run. Users turn it on explicitly under Settings → Sprache, where
the toggle already lived before the in-call button shipped.

The in-call SparklesIcon button and all the associated wiring
(onToggleNoiseSuppression, noiseSuppression prop, local subscription
in InCallPanel) is removed. The hot-swap UX is preserved: a new
subscribeAudioSettings watcher in CallContext detects noiseSuppression
flips during an active call and re-runs setupMicPipeline so the change
takes effect without rejoining.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop/src/components/InCallPanel.tsx

@@ -6,11 +6,6 @@ import { useTranslation } from 'react-i18next';
 
 import { useAuth } from '../context/AuthContext';
 import { type CallMode, useCall } from '../context/CallContext';
-import {
-  getAudioSettings,
-  subscribeAudioSettings,
-  updateAudioSettings,
-} from '../lib/audioSettings';
 import {
   getPttSettings,
   type PttSettings,
@@ -80,7 +75,6 @@ export function InCallPanel({ conversation }: Props) {
     hangup,
     setCallMode,
     setFocusedId,
-    setAudioInputDevice,
     micError,
     clearMicError,
     retryMic,
@@ -94,10 +88,6 @@ export function InCallPanel({ conversation }: Props) {
   const [volumeMenu, setVolumeMenu] = useState<
     { userId: string; displayName: string; x: number; y: number } | null
   >(null);
-  const [noiseSuppression, setNoiseSuppression] = useState<boolean>(
-    () => getAudioSettings().noiseSuppression,
-  );
-  useEffect(() => subscribeAudioSettings((s) => setNoiseSuppression(s.noiseSuppression)), []);
   // Active-speaker auto-focus uses "who most recently started speaking"
   // rather than "exactly one speaker" — matches Discord more closely and
   // handles the case where two people talk briefly without the focus
@@ -180,7 +170,6 @@ export function InCallPanel({ conversation }: Props) {
       sharing={isScreenSharing}
       video={isCameraEnabled}
       deafened={isDeafened}
-      noiseSuppression={noiseSuppression}
       onToggleMute={toggleMute}
       // 1-click share uses last-saved preset + displaySurface. Right-click
       // opens the quality picker for users who want to change settings
@@ -198,14 +187,6 @@ export function InCallPanel({ conversation }: Props) {
       }}
       onToggleVideo={() => void toggleCamera()}
       onToggleDeafen={toggleDeafen}
-      // Hot-swap the mic track with new constraints by replaying the
-      // input-device switch with the same id. setAudioInputDevice re-reads
-      // audioSettings, so flipping noiseSuppression first is enough.
-      onToggleNoiseSuppression={() => {
-        const prev = getAudioSettings().noiseSuppression;
-        updateAudioSettings({ noiseSuppression: !prev });
-        void setAudioInputDevice(getAudioSettings().inputDeviceId);
-      }}
       onOpenParticipants={() => setParticipantsOpen((v) => !v)}
       participantsOpen={participantsOpen}
       onToggleSoundboard={() => setSoundboardOpen((v) => !v)}