Bump to v1.1.0 and bring all documentation current

Version bump in both pyproject.toml and package.json. Documentation
update covers everything shipped since v1.0.0 (direct messages,
message deletion, custom emoji, video attachments, DM/room email
notifications, active sessions, and more), and corrects claims that
had gone stale -- backend/README.md and DEPLOYMENT.md both still said
"no server-side session revocation" and backend/README.md said "no
custom/uploaded emoji," both now false.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

frontend/README.md

@@ -1,13 +1,15 @@
 # DS Chat frontend
 
 React 19 + TypeScript + Vite PWA. The full client for DS Chat: auth and
-invite-based signup, room CRUD with roles/invites, real-time WebSocket chat
-(Markdown, @mentions, reactions, image/file attachments with previews,
-message editing), unread indicators and presence, per-user theming
-(presets plus a custom theme builder), Web Push notifications, offline
-caching and an auto-update banner via a custom service worker, and a
-site-admin portal — wired to the backend's REST API and `/ws/chat` WebSocket
-endpoint. See [`../README.md`](../README.md) and
+invite-based signup, room CRUD with roles/invites, direct messages,
+real-time WebSocket chat (Markdown, @mentions, reactions, built-in and
+custom emoji, image/video/file attachments with previews, message editing
+and deletion), unread indicators and presence, per-user theming (presets
+plus a custom theme builder), Web Push/email notifications and a desktop-
+notification bridge, an active-sessions view for managing where you're
+logged in, offline caching and an auto-update banner via a custom service
+worker, and a site-admin portal — wired to the backend's REST API and
+`/ws/chat` WebSocket endpoint. See [`../README.md`](../README.md) and
 [`../backend/README.md`](../backend/README.md) for full local setup.
 
 ## Dev
@@ -39,20 +41,24 @@ worker.
 ```
 src/
   main.tsx, App.tsx        routes: /login, /signup, /forgot-password, /reset-password,
-                             /rooms, /rooms/:roomId, /admin (AdminRoute-gated); mounts
-                             UpdateBanner globally and ChatSocketProvider once authed
+                             /rooms, /rooms/:roomId, /admin (AdminRoute-gated), /help;
+                             mounts UpdateBanner globally, ChatSocketProvider and
+                             CustomEmojiProvider once authed
   types.ts                  shared request/response/WS-envelope types, mirroring the
                              backend's Pydantic schemas
 
   api/                      fetch wrappers, one file per backend resource: client
-                              (base fetch/error handling), auth, signup, rooms, users,
-                              bots, webhooks, push, admin, customThemes, uploads
+                              (base fetch/error handling), auth (incl. active sessions),
+                              signup, rooms (incl. DMs), users, bots, webhooks, push,
+                              admin, customThemes, customEmoji, uploads
   ws/useChatSocket.ts        the WebSocket hook: connect/reconnect with backoff,
-                              join/leave rooms, send/edit/react, visibility-gated
+                              join/leave rooms, send/edit/delete/react, visibility-gated
                               presence, triggers an SW update check on reconnect
   context/
     AuthContext.tsx            current-user state, hydrated via GET /api/auth/me
     ChatSocketContext.tsx      shares one useChatSocket instance across the app
+    CustomEmojiContext.tsx     fetches the site's custom emoji once, exposes a
+                                 shortcode lookup + a refresh() called after upload/delete
 
   lib/
     avatar.ts                  deterministic accent-color cycling for avatars
@@ -61,7 +67,9 @@ src/
     fileSize.ts                 human-readable byte formatting
     lastUser.ts                 cached "who was I last logged in as" for offline shell render
     messageGrouping.ts          groups consecutive messages by sender/time, presence lookup
-    push.ts                     PushManager subscribe/unsubscribe, VAPID key conversion
+    push.ts                     PushManager subscribe/unsubscribe, VAPID key conversion,
+                                  timeout-guarded so a browser that never settles the
+                                  permission prompt can't leave the UI stuck forever
     swUpdate.ts                  bridges the SW registration to useChatSocket's reconnect hook
     theme.ts                     applies preset/custom themes as CSS custom properties
 
@@ -73,24 +81,36 @@ src/
 
   components/
     ProtectedRoute.tsx, AdminRoute.tsx        auth/site-admin route guards
-    TopBar.tsx, Sidebar.tsx, RoomRow.tsx        room list chrome
+    TopBar.tsx, Sidebar.tsx, RoomRow.tsx        room list chrome (DMs and Rooms as
+                                                  independently collapsible sections)
     ChatPane.tsx, MessageList.tsx, Composer.tsx    chat view: history+live merge,
-                                                     message rendering, composer/attach/send
-    MessageContent.tsx, MentionAutocomplete.tsx    Markdown rendering + @mention highlighting/autocomplete
-    ImageLightbox.tsx, FilePreviewModal.tsx        attachment viewers (image/PDF/text/Markdown)
-    EmojiPicker.tsx                                reaction/composer emoji picker
-    RoomInfoPanel.tsx                              room details/members/roles panel
-    NewRoomModal.tsx, BrowseRoomsModal.tsx, UserPicker.tsx    room creation/discovery, member picking
+                                                     message rendering (incl. deleted-message
+                                                     tombstones), composer/attach/send
+    MessageContent.tsx, MentionAutocomplete.tsx    Markdown rendering (mentions, room
+                                                     links, custom emoji `:shortcode:`,
+                                                     heading ids, sub/superscript) +
+                                                     @mention highlighting/autocomplete
+    ImageLightbox.tsx, VideoLightbox.tsx,
+    FilePreviewModal.tsx                           attachment viewers (image/video/PDF/
+                                                     text/Markdown)
+    EmojiPicker.tsx, CustomEmojiUploadModal.tsx     reaction/composer emoji picker
+                                                      (built-in + site's custom emoji) and
+                                                      its upload dialog
+    RoomInfoPanel.tsx                              room details/members/roles/email-
+                                                     notification-toggle panel
+    NewRoomModal.tsx, BrowseRoomsModal.tsx, UserPicker.tsx    room creation/discovery, member
+                                                                picking (also how a DM starts)
     ProfileModal.tsx, ThemeBuilderModal.tsx, CustomThemePreview.tsx
-                                                    profile settings + the custom theme editor
-                                                    (opened in its own wide dialog) with a live,
+                                                    profile settings (incl. active-sessions
+                                                    list) + the custom theme editor (opened
+                                                    in its own wide dialog) with a live,
                                                     hoverable mockup of the real UI
     RoomAvatar.tsx, UserAvatar.tsx                 avatar rendering (incl. presence dot)
     OfflineBanner.tsx, UpdateBanner.tsx            connectivity state / new-version-available prompt
 
   pages/
     LoginPage.tsx, SignupPage.tsx, ForgotPasswordPage.tsx, ResetPasswordPage.tsx
-    ChatShellPage.tsx, AdminPage.tsx
+    ChatShellPage.tsx, AdminPage.tsx, HelpPage.tsx
 
   styles/tokens.css          design tokens (DarkSingularity theme: colors, spacing, etc.)
   sw.ts                      custom service worker (injectManifest): app-shell