feat(mobile): Saved Messages accessible from room header More Options menu

On mobile, SidebarNav (which contains BookmarksTab) is hidden while
inside a room. Added a Saved Messages toggle to the RoomMenu (···More
Options) so users can open/close the bookmarks panel without leaving
the room. Works on all screen sizes; UNTESTED on device.

Also marks Remind Me Later as done in LOTUS_TODO — it was already
fully wired (RemindMeDialog + ReminderMonitor + Message.tsx trigger).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

LOTUS_TODO.md

@@ -436,14 +436,13 @@ Themes:
 ## 🚀 Features to Add
 
 - [ ] **Mobile Audit:** Comprehensive audit of all features in LOTUS_FEATURES.md for mobile PWA usability and layout responsiveness.
-- [ ] **Remind Me Later:** Slack-style reminders for messages (ping user at a set time, add to bookmarks).
-  - **Root Cause:** Feature does not exist. Reminders require persistence in Matrix account data and a background worker to trigger notifications.
-  - **Approach:** Expand `useReminders.ts` to include `removeReminder`. Add a "Remind me" menu item to `Message.tsx` that triggers a `DatePicker`/`TimePicker` modal (reusing logic from `JumpToTime.tsx`). Implement a `ReminderMonitor` in `ClientNonUIFeatures.tsx` that polls active reminders from `io.lotus.reminders` and pushes to `toastQueueAtom` in `state/toast.ts` when due.
-  - **Complexity:** Medium.
-- [ ] **Mobile Bookmarks:** Fix visibility issue where bookmarks do not show up when selected via PWA on mobile.
-  - **Root Cause:** `ClientLayout.tsx` explicitly restricts `BookmarksPanel` rendering to `ScreenSize.Desktop` (lines 51-56).
-  - **Approach:** Update `ClientLayout.tsx` to remove the `ScreenSize.Desktop` restriction. Pass `isMobile={screenSize !== ScreenSize.Desktop}` to `BookmarksPanel`. `BookmarksPanel.tsx` already supports this prop (line 127) to enable full-screen absolute positioning and reactive layout.
-  - **Complexity:** Low.
+- [x] **Remind Me Later:** Slack-style reminders for messages — fully implemented ⚠️ UNTESTED end-to-end
+  - **Storage:** `useReminders.ts` — persists to `io.lotus.reminders` account data with `addReminder` / `removeReminder` / `getReminders`
+  - **UI:** `RemindMeDialog.tsx` — 4 presets (20 min, 1 hr, 3 hr, tomorrow 9am); wired into `Message.tsx` context menu via `remindOpen` state; `useModalStyle(320)` for mobile fullscreen
+  - **Monitor:** `ReminderMonitor` in `ClientNonUIFeatures.tsx` — polls every 30s + on tab visibility; fires Lotus toast when due and calls `removeReminder`
+- [x] **Mobile Bookmarks:** Fixed ⚠️ UNTESTED — bookmarks now accessible from within any room on mobile
+  - **Root Cause:** `BookmarksPanel` renders correctly on mobile but `BookmarksTab` lives in `SidebarNav`, which is hidden when inside a room on mobile (`MobileFriendlyClientNav` returns `null`). No trigger existed.
+  - **Fix:** Added "Saved Messages" `MenuItem` to the `RoomMenu` (···More Options) in `RoomViewHeader.tsx`. Toggles `bookmarksPanelAtom` and closes the menu. Works on all screen sizes — desktop users see it as a duplicate of the sidebar star, mobile users now have their only in-room access point.
 
 ---
 

src/app/features/room/RoomViewHeader.tsx

@@ -74,6 +74,8 @@ import { useLivekitSupport } from '../../hooks/useLivekitSupport';
 import { webRTCSupported } from '../../utils/rtc';
 import { MediaGallery } from './MediaGallery';
 import { usePendingKnocks } from '../../hooks/usePendingKnocks';
+import { useAtom } from 'jotai';
+import { bookmarksPanelAtom } from '../../state/bookmarksPanel';
 
 type RoomMenuProps = {
   room: Room;
@@ -96,6 +98,7 @@ const RoomMenu = forwardRef<HTMLDivElement, RoomMenuProps>(({ room, requestClose
 
   const [invitePrompt, setInvitePrompt] = useState(false);
   const [reportRoomOpen, setReportRoomOpen] = useState(false);
+  const [bookmarksOpen, setBookmarksOpen] = useAtom(bookmarksPanelAtom);
 
   const handleMarkAsRead = () => {
     markAsRead(mx, room.roomId, hideActivity);
@@ -169,6 +172,20 @@ const RoomMenu = forwardRef<HTMLDivElement, RoomMenuProps>(({ room, requestClose
       </Box>
       <Line variant="Surface" size="300" />
       <Box direction="Column" gap="100" style={{ padding: config.space.S100 }}>
+        <MenuItem
+          onClick={() => {
+            setBookmarksOpen((v) => !v);
+            requestClose();
+          }}
+          size="300"
+          after={<Icon size="100" src={Icons.Star} filled={bookmarksOpen} />}
+          radii="300"
+          aria-pressed={bookmarksOpen}
+        >
+          <Text style={{ flexGrow: 1 }} as="span" size="T300" truncate>
+            Saved Messages
+          </Text>
+        </MenuItem>
         {!isServerNotice && (
           <MenuItem
             onClick={handleInvite}