fix(notifications): timed mutes are lifted by any Lotus device, not just the one that set them (#333)

A timed mute writes a server-side push rule (muted everywhere), but the
unmute timer lived in one browser's localStorage: close that laptop and
the room stayed muted on the phone until it was reopened, and forever
after a logout there. Timers now live in account data
(io.lotus.mute_timers: { timers: { [roomId]: unmuteAt } }). Every
client schedules from it, reschedules when it changes, and the first one
online after expiry unmutes. An indefinite mute clears a pending timer.
Local timers from before are migrated once.

Fixes #333

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/app/pages/client/ClientNonUIFeatures.tsx

@@ -58,8 +58,8 @@ import { useMediaAuthentication } from '../../hooks/useMediaAuthentication';
 import { presenceStateFromSetting, usePresenceUpdater } from '../../hooks/usePresenceUpdater';
 import {
   MAX_MUTE_TIMEOUT_MS,
-  MuteTimerEntry,
   loadMuteTimers,
+  migrateLocalMuteTimers,
   unmuteRoom,
 } from '../../features/room-nav/muteTimers';
 import { STATUS_EXPIRY_KEY, STATUS_MSG_KEY } from '../../features/settings/account/Profile';
@@ -91,6 +91,7 @@ import {
   shouldNotifyThreadReply,
   THREAD_NOTIFICATIONS_FALLBACK_BEHAVIOR,
 } from '../../utils/threadNotifications';
+import { AccountDataEvent } from '../../../types/matrix/accountData';
 
 // Grace period after the initial sync settles before invite notifications arm, so
 // the async invite-atom population lands first and isn't mistaken for new invites.
@@ -369,30 +370,35 @@ function PresenceUpdater() {
 function MuteTimerRestore() {
   const mx = useMatrixClient();
 
+  // [Gitea #333] Timers are in account data, so a mute set on another device
+  // is lifted here too, and changes there (a new mute, a manual unmute)
+  // reschedule. Moves any timers this browser kept locally (pre-#333) first.
   useEffect(() => {
-    const timers = loadMuteTimers();
-    if (timers.length === 0) return undefined;
-
-    const now = Date.now();
-    const pastDue: MuteTimerEntry[] = [];
-    const future: MuteTimerEntry[] = [];
-    timers.forEach((entry) => (entry.unmuteAt <= now ? pastDue : future).push(entry));
-
-    pastDue.forEach((entry) => {
-      unmuteRoom(mx, entry.roomId);
-    });
-
-    const handles = future.map((entry) =>
-      setTimeout(
-        () => {
-          unmuteRoom(mx, entry.roomId);
-        },
-        Math.min(entry.unmuteAt - now, MAX_MUTE_TIMEOUT_MS),
-      ),
-    );
+    migrateLocalMuteTimers(mx).catch(() => {});
+  }, [mx]);
 
+  useEffect(() => {
+    let handles: ReturnType<typeof setTimeout>[] = [];
+    const schedule = () => {
+      handles.forEach(clearTimeout);
+      const now = Date.now();
+      handles = loadMuteTimers(mx).map((entry) =>
+        setTimeout(
+          () => {
+            unmuteRoom(mx, entry.roomId);
+          },
+          Math.max(0, Math.min(entry.unmuteAt - now, MAX_MUTE_TIMEOUT_MS)),
+        ),
+      );
+    };
+    const onAccountData = (event: MatrixEvent) => {
+      if (event.getType() === AccountDataEvent.LotusMuteTimers) schedule();
+    };
+    schedule();
+    mx.on(ClientEvent.AccountData, onAccountData);
     return () => {
       handles.forEach(clearTimeout);
+      mx.removeListener(ClientEvent.AccountData, onAccountData);
     };
   }, [mx]);