fix(wave-3): audit fixes — ACL guards, presence, moderation, theming perf

Wave-3 bug-hunt fixes (findings in LOTUS_TODO), reviewed + gate-green:
- 🔴 ACL editor [H1–H4]: block saving an empty allow-list (was a one-click
  federation brick), warn on self-ban (case-insensitive glob match of
  mx.getDomain() vs allow/deny), accept real globs (1.2.3.*, *.evil.*), and
  gate Save behind a confirm dialog.
- 🔴 [P1] room context menu no longer acts on the wrong room after a live
  reorder (key by roomId, not list index). 🔴 [P2] status writes no longer
  force presence to online over Invisible/DND (shared presenceStateFromSetting).
- 🟠 [P3] timed mutes restored on boot; [P4] custom-status auto-clear now fires
  (always-mounted StatusExpiryMonitor); [P5] timezone also PUT to the m.tz
  profile field so it's visible to others; [H6] RoomInsights single-pass
  min/max (was Math.min(...spread) stack overflow); [H7/H8] mod-log labels.
- 🟡 [P6/P7] favorites collapse+filter, [P8] charCount reset, [P9] DM preview
  refresh on decrypt; theming [T-P1] lazy decorations, [T-P2] drop the redundant
  always-on body animation, [T-P4] live useReducedMotion, [T-P5] decoration key.
- NATIVE-CINNY LAW: notification presets + Powers permissions use folds icons.

DEFERRED: [H5] invite-QR is fetched from api.qrserver.com (third-party leak);
local generation needs a bundled QR lib (not added). tsc/eslint/prettier clean,
build OK, 677 tests.

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

src/app/features/room-nav/RoomNavItem.tsx

@@ -1,5 +1,5 @@
 import React, { MouseEventHandler, forwardRef, useCallback, useRef, useState } from 'react';
-import { Room } from 'matrix-js-sdk';
+import { MatrixClient, Room } from 'matrix-js-sdk';
 import {
   Avatar,
   Box,
@@ -263,27 +263,46 @@ function RenameRoomDialog({ room, onClose }: RenameRoomDialogProps) {
 }
 
 // localStorage key for timed mute timers
-const MUTE_TIMERS_KEY = 'io.lotus.mute_timers';
+export const MUTE_TIMERS_KEY = 'io.lotus.mute_timers';
 
-type MuteTimerEntry = { roomId: string; unmuteAt: number };
+// setTimeout's delay is a signed 32-bit int; larger values overflow and fire
+// immediately. Clamp long delays to this max (~24.8 days).
+export const MAX_MUTE_TIMEOUT_MS = 2_147_483_647;
 
-function loadMuteTimers(): MuteTimerEntry[] {
+export type MuteTimerEntry = { roomId: string; unmuteAt: number };
+
+export function loadMuteTimers(): MuteTimerEntry[] {
   try {
-    return JSON.parse(localStorage.getItem(MUTE_TIMERS_KEY) ?? '[]');
+    const parsed = JSON.parse(localStorage.getItem(MUTE_TIMERS_KEY) ?? '[]');
+    return Array.isArray(parsed) ? parsed : [];
   } catch {
     return [];
   }
 }
 
-function saveMuteTimers(timers: MuteTimerEntry[]): void {
+export function saveMuteTimers(timers: MuteTimerEntry[]): void {
   localStorage.setItem(MUTE_TIMERS_KEY, JSON.stringify(timers));
 }
 
+// Reverse a timed mute: restore the room's notification mode to Unset and drop
+// its persisted timer. Shared by the in-session timer and the boot-time restore.
+export async function unmuteRoom(mx: MatrixClient, roomId: string): Promise<void> {
+  const { setRoomNotificationPreference } =
+    await import('../../hooks/useRoomsNotificationPreferences');
+  await setRoomNotificationPreference(
+    mx,
+    roomId,
+    RoomNotificationMode.Unset,
+    RoomNotificationMode.Mute,
+  ).catch(() => {});
+  saveMuteTimers(loadMuteTimers().filter((e) => e.roomId !== roomId));
+}
+
 function scheduleMuteTimer(roomId: string, durationMs: number, onUnmute: () => void): void {
   const unmuteAt = Date.now() + durationMs;
   const existing = loadMuteTimers().filter((e) => e.roomId !== roomId);
   saveMuteTimers([...existing, { roomId, unmuteAt }]);
-  setTimeout(onUnmute, durationMs);
+  setTimeout(onUnmute, Math.min(durationMs, MAX_MUTE_TIMEOUT_MS));
 }
 
 type RoomNavItemMenuProps = {
@@ -338,13 +357,7 @@ const RoomNavItemMenu = forwardRef<HTMLDivElement, RoomNavItemMenuProps>(
         ).catch(() => {});
         if (durationMs !== null) {
           scheduleMuteTimer(room.roomId, durationMs, () => {
-            setRoomNotificationPreference(
-              mx,
-              room.roomId,
-              RoomNotificationMode.Unset,
-              RoomNotificationMode.Mute,
-            ).catch(() => {});
-            saveMuteTimers(loadMuteTimers().filter((e) => e.roomId !== room.roomId));
+            unmuteRoom(mx, room.roomId);
           });
         }
         requestClose();