Update README: Phase 3 features complete

README.md

@@ -55,9 +55,18 @@ npm run dev
 - [x] Giphy GIF search + trending
 - [x] Terminal/Gruvbox dark aesthetic
 - [x] Voice/video rooms (LiveKit)
-- [ ] Roles + permissions (Phase 3)
-- [ ] PWA push notifications (Phase 3)
-- [ ] WebAuthn passkeys (Phase 3)
+- [x] Online presence (online/idle/dnd/offline)
+- [x] Typing indicators
+- [x] Message reactions (emoji picker, counts)
+- [x] Message replies/threads
+- [x] PWA with service worker
+- [x] Invite link system
+- [x] @mention autocomplete
+- [x] Dark/light mode toggle
+- [x] Mobile-responsive layout (bottom nav, drawer)
+- [ ] Push notifications (backend VAPID keys needed)
+- [ ] Roles + permissions (Phase 4)
+- [ ] WebAuthn passkeys (future)
 - [ ] TUI client (Phase 5)
 
 ## Project Structure
@@ -79,11 +88,13 @@ dumpsterChat/
 │   ├── middleware/        # Session auth middleware
 │   ├── server/           # Server CRUD + membership
 │   ├── upload/           # MinIO file upload + serve
-│   └── voice/            # LiveKit voice/video integration
+│   ├── voice/            # LiveKit voice/video integration
+│   ├── reaction/         # Message reactions
+│   └── invite/           # Server invite links
 ├── web/                  # React frontend (PWA)
 │   ├── src/
-│   │   ├── components/   # Layout, ChatArea, LoginForm, UserSettings, GiphyPicker, VoiceChannel, VoicePanel, VoiceControls
-│   │   ├── stores/       # Zustand (auth, server, channel, message, ws, voice)
+│   │   ├── components/   # Layout, ChatArea, LoginForm, UserSettings, GiphyPicker, VoiceChannel, VoicePanel, VoiceControls, TypingIndicator, ReactionBar, EmojiPicker, ReplyBar, MentionPopup, InviteModal, JoinServer, MobileNav, MobileDrawer, ThemeToggle, InstallPrompt
+│   │   ├── stores/       # Zustand (auth, server, channel, message, ws, voice, presence, typing, push)
 │   │   └── lib/          # API client, WebSocket client
 │   └── tailwind.config.js
 ├── docker/               # Docker Compose, Dockerfile, Caddyfile, LiveKit config