fix(notifications): quiet hours start and end while the app stays open (#325)

useNotificationsQuiet evaluated the quiet-hours window (and the
"Pause notifications" expiry) only at render time, and the long-lived
message/invite notifiers rarely re-render, so someone leaving Lotus open
overnight with quiet hours 22:00–07:00 got every sound all night (and a
30-minute pause could outlast itself). The hook now re-evaluates every
30 s.

Verified headless (notifications granted, window unfocused): quiet
hours set to start ~75 s after the app opened; a DM before the window
notified; one inside the window, with the app left alone: before it
still notified, now it's silent.

Fixes #325

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

src/app/hooks/useNotificationsQuiet.ts

@@ -1,3 +1,4 @@
+import { useEffect, useState } from 'react';
 import { useAtomValue } from 'jotai';
 import { focusAssistActiveAtom } from '../state/focusAssist';
 import { manualDndAtom } from '../state/manualDnd';
@@ -6,6 +7,8 @@ import { isWithinTimeWindow } from '../utils/timeWindow';
 import { useSetting } from '../state/hooks/settings';
 import { settingsAtom } from '../state/settings';
 
+const QUIET_TICK_MS = 30_000;
+
 export type NotificationsQuietInputs = {
   focusAssistActive: boolean;
   manualDnd: boolean;
@@ -40,6 +43,15 @@ export function isNotificationsQuiet({
 // Live-atoms/settings-backed version of `isNotificationsQuiet` for use in
 // components.
 export function useNotificationsQuiet(): boolean {
+  // [Gitea #325] The quiet-hours window and the snooze expiry depend on the
+  // clock, but the long-lived notifiers using this hook rarely re-render, so a
+  // window starting (or a 30-minute pause ending) while the app stayed open was
+  // never noticed. Re-evaluate on a tick, like the night-light overlay.
+  const [, setTick] = useState(0);
+  useEffect(() => {
+    const id = setInterval(() => setTick((t) => t + 1), QUIET_TICK_MS);
+    return () => clearInterval(id);
+  }, []);
   const focusAssistActive = useAtomValue(focusAssistActiveAtom);
   const manualDnd = useAtomValue(manualDndAtom);
   const snoozeUntil = useAtomValue(notificationSnoozeUntilAtom);