fix(calls): harden ML denoise shim against static; fix lint/format

ML noise suppression produced loud static on real calls. RNNoise requires
mono 48kHz float input; feeding it stereo or wrong-rate data is the classic
cause of that static. Harden the shim:
- request mono (channelCount:1) + 48kHz capture
- run a 48kHz AudioContext and BAIL to the raw mic if the browser won't
  give a true 48kHz context (wrong-rate data -> static)
- force the worklet node to explicit mono in/out
- use the non-SIMD rnnoise.wasm (SIMD build artifacts on some GPUs)
- share one AudioContext across captures

Also fix the two CI-blocking eslint errors (unused vars in UrlPreviewCard
and useLocalMessageSearch) and apply repo-wide prettier formatting so
check:eslint and check:prettier pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/hooks/usePresenceUpdater.ts

@@ -37,11 +37,7 @@ export function usePresenceUpdater() {
       return mx
         .setPresence({
           presence: 'unavailable',
-          ...(statusMsg
-            ? { status_msg: statusMsg }
-            : status
-              ? { status_msg: status }
-              : {}),
+          ...(statusMsg ? { status_msg: statusMsg } : status ? { status_msg: status } : {}),
         })
         .catch(() => undefined);
     };

src/app/hooks/useUserNotes.ts

@@ -21,14 +21,11 @@ export function useUserNotes(): {
 
   useAccountDataCallback(
     mx,
-    useCallback(
-      (evt) => {
-        if (evt.getType() === NOTES_KEY) {
-          setNotes(evt.getContent<UserNotesContent>() ?? {});
-        }
-      },
-      [],
-    ),
+    useCallback((evt) => {
+      if (evt.getType() === NOTES_KEY) {
+        setNotes(evt.getContent<UserNotesContent>() ?? {});
+      }
+    }, []),
   );
 
   useEffect(() => {