feat(chat): load older messages on scroll-to-top (history pagination) (v1.11.0+15)

Repository keeps one live Timeline per room and re-yields on its
onUpdate callback (fires for both live events AND requestHistory),
not just onSync which never fires for pagination. loadMoreMessages
now paginates that same instance; added canLoadMore.

Timeline widget requests older history when scrolled within 400px of
the oldest end, guarded against re-entry, with a top loading spinner.

Verified: widget test drives a drag-to-top and asserts loadMoreMessages
fires; live smoke test confirms the onUpdate delivery path (reused by
history) still shows new messages after the refactor.

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

assets/images/m8logo.svg

@@ -1,24 +1,15 @@
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+<!-- Version: 1.1.0 | Updated: 2026-07-03 -->
+<!-- Fills inlined as attributes: flutter_svg does not parse <style> blocks,
+     which made the whole logo render black in the app. -->
 <svg id="Layer_1" xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 429 429">
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+      <path fill="#f8fbfe" d="M314.5,196.52c-.17,1.23-.35,1.29.62,2.05,1.48,1.17,4.67,2.13,6.85,3.96,14.91,12.55,13.43,36.51-1.56,48.38-32.68,25.9-99.5.6-75.74-40.74,3.72-6.47,7.66-7.16,11.77-11.23,2.88-2.86-2.4-3.42-4.98-5.91-5.84-5.64-9.59-17-8.95-25.02,2.88-36.49,69.63-40.37,84.39-11.41,6.95,13.63,2.68,34.19-12.4,39.91ZM281.26,156.76c-20.8,2.86-20.27,28.16-1.17,30.66,10.68,1.4,26.97-.71,27.32-14.51.36-14.27-14.74-17.71-26.15-16.15ZM279.26,207.76c-8.99,1.29-15.54,7.92-15.55,17.24-.02,22.72,41.87,22.15,44.72,3.94,3.04-19.37-13.32-23.45-29.17-21.18Z"/>
+      <path fill="#1466eb" d="M279.26,207.76c15.85-2.28,32.21,1.81,29.17,21.18-2.86,18.21-44.75,18.78-44.72-3.94,0-9.32,6.57-15.95,15.55-17.24Z"/>
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help4bis-claude-notes/decisions.md

@@ -69,3 +69,67 @@
 - **Rationale:** Element X sends {} when ending calls (verified from DB). Our {'memberships': []} wasn't being recognised.
 - **Files affected:** livekit_service.dart
 - **Status:** Deployed. NOT YET TESTED.
+### 2026-07-03 05:20 — Functionality audit + brand retheme (v1.6.0+8)
+- **Decision:** Retheme app from purple (#5C35C9) to m8chat.au brand blues taken from the site's Elementor kit: brandBlue #1265ED, accentBlue #3B8BFF, navy darks derived from Ancop Blue #010B46.
+- **Rationale:** Full audit (2026-07-03) found look and feel did not match m8chat.au. Logo rendered black because flutter_svg does not parse SVG <style> blocks; fills now inlined as attributes in m8logo.svg. Profile screen showed stale hardcoded appVersion 1.3.0. UI strings contained em-dashes (global style rule violation).
+- **Audit results:** Backend all healthy (client API, livekit JWT, Jitsi external_api.js, push gateway, TURN 3478/5349). Full E2E pass in headless Chromium: login, rooms, spaces, profile, conference, help tabs, room open, message send verified on Synapse. Disposable audit users created and erased via admin API.
+- **Files affected:** assets/images/m8logo.svg, lib/app/theme.dart (2.0.0), lib/core/config/app_config.dart (2.1.0), web/manifest.json, pubspec.yaml (1.6.0+8), em-dash fixes in 8 presentation/util files, chat_screen.dart lint fix (_leaveRoom context param).
+- **Status:** Done — built, deployed to app2.m8chat.au (backup public_html.bak.20260703_pre160.tar.gz), visually verified light+dark.
+
+### 2026-07-04 07:15 — Jitsi conference join fixed (v1.6.2+10)
+- **Decision:** Root cause of "blank page on join" was the JS interop binding calling JitsiMeetExternalAPI (an ES6 class) as a plain function, i.e. without `new`. Browsers throw "Class constructor cannot be invoked without 'new'" and the meeting screen stayed blank. Feature had never worked in the web release build.
+- **Fix:** `_JitsiApi` extension type with an external constructor (compiles to `new`), container-div wait loop in joinMeeting (post-frame callback could fire before the platform view div existed), JS options built via setProperty instead of Map.jsify (DOM node in a jsify map is unsupported), joinMeeting returns bool, jitsi_screen shows an error screen instead of blank on failure.
+- **Verified:** headless Chromium on production build: iframe renders, prejoin page shows, devices pass, name entry works, reaches the Prosody JWT auth gate (expected for a tokenless room). COEP require-corp turned out NOT to block conf.m8chat.au in current Chromium.
+- **Files affected:** lib/features/jitsi/data/jitsi_web_service.dart (1.2.0), lib/features/jitsi/presentation/jitsi_screen.dart (1.3.0), app_config 1.6.2, pubspec 1.6.2+10.
+- **Status:** Done — deployed to app2.m8chat.au (backups pre160/pre161 tarballs on server).
+
+### 2026-07-04 07:35 — Feature build round 1 (v1.7.0+11)
+- **P1 Encrypted history:** new key_restore_prompt.dart offers recovery-key restore right after login when the account has secret storage and the fresh device can't read history (was buried in Profile). Fires once per session from rooms_screen initState.
+- **P2 Incoming calls:** overlay existed but (a) was never mounted and (b) only listened for legacy m.call.invite. Fixed: IncomingCallOverlayHost mounted in app.dart MaterialApp.builder; matrixrtc_repository now also detects MSC3401 org.matrix.msc3401.call.member (what Element X sends), with stale-event + dedupe guards. Accept uses routerProvider (overlay is above the router navigator).
+- **P3 Reactions/edit/delete:** reactions + delete were already wired (notes were stale). Added editMessage (sendTextEvent editEventId) + EditMessage notifier + Edit tile/dialog. Verified full context menu renders Reply/React/Copy/Edit/Delete.
+- **P4 File/image send:** already implemented (sendFile + file_picker + UploadFile). Confirmed, no change needed.
+- **P5 Panic button:** NEW feature/panic module. Config in account data au.m8chat.panic (room + message). Hold-to-fire button in rooms AppBar (only shows when armed); Profile tile to arm/disarm. Alert text sent FIRST, then best-effort m.location pin (geo: uri, msc3488) with 10s geolocation budget so a denied permission never blocks the alert. VERIFIED end-to-end: text + location with exact GPS landed in the target room via mock geolocation.
+- **Status:** built, deployed app2.m8chat.au v1.7.0+11 (backup pre170 tarball on server). Analyze clean, tests pass.
+- **Deferred:** ghost-device cleanup, rooms-provider rebuild perf, native session persistence — still open from original notes.
+
+### 2026-07-04 07:50 — Mobile UI v2 design pass (v1.8.0+12)
+- **Process:** ran a 7-agent design workflow (3 lens designers: information-density, reachability-flow, polish-delight; 3 judges; 1 synthesiser). All proposals scored 8-9/10. Output: prioritised spec (A high-impact/low-risk, B medium, C defer). Full spec archived in session.
+- **Implemented the whole A tier + safe B items:**
+  - A1/A2 message bubble contrast: self #1265ED (selfBubble token, WCAG AA 5.11:1 vs failing 3.32:1), incoming #1C2452 + hairline border.
+  - A3 replaced failing low-alpha read text with subtleText token (rooms empty state, room tile).
+  - A4 deterministic per-user avatar colour (8-hue brand palette, name.hashCode) in matrix_avatar.dart — every disc now distinct.
+  - A5/A6 room tile: unread preview brightened+w500, compact density, timestamp aligned to title, unread dot spacing.
+  - A7 fixed stale "pencil icon" empty-state copy.
+  - A9 FAB now "New message" (compose) in thumb zone; explore moved to AppBar compass. Straight onPressed swap.
+  - A8 login + welcome brand gradient (#0A0F2E→#131A42), card hairline outlines.
+  - B7 message input capped minLines 1 / maxLines 6. B8 bubble maxWidth = viewport*0.78 clamped 560. B10 AppBar scrolledUnderElevation + hairline.
+- **Deferred (documented in spec):** B1 message grouping, B2 day separators, B4 quick-reaction row, B5 panic hold-ring, B6 scroll-to-latest FAB, C1 swipe-to-reply (iOS PWA back-gesture risk), C2 group sender prefix (needs RoomModel field), C3 demote Help nav.
+- **Verified:** headless Chromium at 390x844 on production build — gradient login, distinct avatar colours, compose FAB, AA bubble contrast all confirmed.
+- **Status:** built + deployed app2.m8chat.au v1.8.0+12 (backup pre180 tarball). Analyze clean, tests pass.
+
+### 2026-07-04 08:10 — Deferred UI items built (v1.9.0+13)
+- **B1 message grouping:** MessageBubble gains optional isFirstInGroup/isLastInGroup (defaulted true so callers keep compiling). _Timeline computes them from reverse-index neighbours (older=index+1, newer=index-1) + 5-min gap. Sender name only on first-of-run, avatar only on last-of-run (32px gutter holds space otherwise), tail corner only on last-of-run, tight 1px padding mid-run.
+- **B2 day separators:** _DayChip (Today/Yesterday/d MMM, toLocal AEST) rendered in a Column above the first message of each local day. Column wraps the gesture widget so long-press stays intact.
+- **B4 quick-reaction row:** _MessageContextMenu gains a top row of six presets (👍❤️😂😮😢🙏, 44dp each) + "+" opening the existing EmojiPicker, above Reply. Uses existing sendReaction provider.
+- **Verified in headless Chromium on production build:** grouping renders (Sam's 3-run collapsed to tight blue bubbles; Alex's 2-run shows name once + avatar on last bubble only, amber deterministic disc), "Today" chip renders, quick-react row renders with all six presets + picker button, tapping ❤️ sent a real m.reaction (confirmed via server /messages). Long-press context menu still fires (all of Reply/React/Copy/Edit/Delete intact).
+- **Note:** cross-day separators are logic-only verified (can't backdate events without an appservice); the same-day "Today" chip confirms the render path.
+- **Status:** built + deployed app2.m8chat.au v1.9.0+13 (backup pre190 tarball). Analyze clean, format clean, tests pass.
+
+### 2026-07-04 08:30 — Scroll-to-latest + panic hold-ring (v1.10.0+14)
+- **B6 scroll-to-latest:** _Timeline converted ConsumerWidget → ConsumerStatefulWidget with a ScrollController. When offset > 400 (reverse list, newest at 0), an AnimatedScale FloatingActionButton.small(arrow_downward) fades in at Positioned(right:12,bottom:12) inside a Stack around the ListView (NOT the Scaffold FAB slot). Tap → animateTo(0, 200ms, easeOut).
+- **B5 panic hold-ring:** panic_button.dart → onLongPressDown starts a 700ms AnimationController; a red CircularProgressIndicator(value: controller.value) fills around the emergency_share icon; on completion HapticFeedback.heavyImpact + fire; early release resets silently. onTap still shows the hint; configured guard + _sending state preserved.
+- **Verified:**
+  - Panic ring: headless Chromium screenshot mid-hold shows the red arc ~half-filled; completing the hold fired the alert (🚨 text landed in the SES Emergency room; location correctly skipped when geolocation not granted, proving the alert-before-location safeguard).
+  - Scroll-to-latest: the Flutter CanvasKit surface would NOT accept synthetic scroll input from Playwright (mouse wheel and drag both no-op on the canvas; input field steals focus). Verified instead with a deterministic widget test (test/scroll_to_latest_test.dart): 40 messages, starts at offset 0, drag up → offset > 400 + button appears, tap → offset back to 0. Passes.
+- **Note for future:** getTimeline() only yields the ~10-event sync window and there is no scroll-back history pagination, so on a normal phone the timeline rarely exceeds ~1 screen and the jump button seldom shows in practice. Wiring requestHistory() on near-top scroll would make both the button and long-scrollback genuinely useful. Flagged, not built.
+- **Status:** built + deployed app2.m8chat.au v1.10.0+14 (backup pre1100 tarball). Analyze clean, 4 tests pass.
+
+### 2026-07-04 08:50 — Scroll-back history pagination (v1.11.0+15)
+- **What:** wired requestHistory() so older messages load as you scroll toward the top. Completes the scroll-to-latest feature (previously the timeline only ever held the ~10-event sync window).
+- **Repository (chat_repository.dart v1.5.0):** now keeps one live Timeline per room in `_timelines` map. watchTimeline creates it with an onUpdate callback that drives a StreamController signal, re-yielding the mapped list on BOTH live events and history pagination (the old code only re-yielded on onSync, which does NOT fire for requestHistory). loadMoreMessages paginates that stored instance (old code called requestHistory on a throwaway getTimeline() — wrong instance). Added canLoadMore(roomId) → timeline.canRequestHistory. Timeline cancelled + removed in the stream's finally.
+- **UI (chat_screen.dart v1.7.0):** _TimelineState._onScroll detects near-top (reverse list: pixels >= maxScrollExtent - 400) and calls _loadOlder, guarded by _loadingMore + canLoadMore. Top-centre spinner while loading. Prepended older content grows maxScrollExtent while pixels stays put, so the viewport stays anchored and you move out of the trigger band (no infinite loop).
+- **Verified:**
+  - Widget test test/history_pagination_test.dart: 40 msgs, fake repo, drag to top → loadMoreMessages called (with offset/override assertions). Passes. 5 tests total green.
+  - Live smoke test on production: room displays the synced window correctly after the refactor, and a newly-sent message appears at the bottom — proving the onUpdate→remap→display path (which history reuses) works.
+  - NOT screenshot-verified: older messages (1-5) materialising on scroll-to-top, because the CanvasKit surface rejects synthetic scroll in headless Chromium. Trigger (widget test) + delivery path (live message) are both proven; the SDK calls onUpdate after requestHistory (timeline.dart:115), same path.
+- **Status:** built + deployed app2.m8chat.au v1.11.0+15 (backup pre1110 tarball). Analyze clean, 5 tests pass.

lib/app/app.dart

@@ -1,9 +1,12 @@
-// Version: 1.0.0 | Created: 2026-04-01
-// Root MaterialApp widget. Wires together theme + router.
+// Version: 1.1.0 | Created: 2026-04-01 | Updated: 2026-07-04
+// Root MaterialApp widget. Wires together theme + router + incoming-call
+// overlay (v1.1.0 — the overlay existed but was never mounted, so incoming
+// calls showed nothing).
 
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
+import '../features/calls/presentation/incoming_call_overlay.dart';
 import 'router.dart';
 import 'theme.dart';
 
@@ -26,6 +29,8 @@ class M8ChatApp extends ConsumerWidget {
       themeMode: ThemeMode.system,
       routerConfig: router,
       debugShowCheckedModeBanner: false,
+      builder: (context, child) =>
+          IncomingCallOverlayHost(child: child ?? const SizedBox.shrink()),
     );
   }
 }

lib/app/router.dart

@@ -1,4 +1,4 @@
-// Version: 1.0.2 | Created: 2026-04-01
+// Version: 1.1.0 | Created: 2026-04-01 | Updated: 2026-04-05
 // All route definitions in one place.
 // GoRouter is created ONCE (keepAlive) and re-evaluates redirects via
 // refreshListenable — avoids the GoRouter recreation bug from ref.watch.
@@ -12,6 +12,8 @@ import '../core/auth/auth_state.dart';
 import '../features/auth/presentation/login_screen.dart';
 import '../features/calls/presentation/call_screen.dart';
 import '../features/chat/presentation/chat_screen.dart';
+import '../features/jitsi/presentation/jitsi_screen.dart';
+import '../features/jitsi/presentation/welcome_screen.dart';
 import '../features/profile/presentation/profile_screen.dart';
 import '../features/rooms/presentation/rooms_screen.dart';
 import '../features/spaces/presentation/spaces_screen.dart';
@@ -21,12 +23,14 @@ part 'router.g.dart';
 /// Route path constants — use these instead of raw strings.
 abstract final class AppRoutes {
   static const String root = '/';
+  static const String welcome = '/welcome';
   static const String login = '/login';
   static const String rooms = '/rooms';
   static const String chat = '/rooms/:roomId';
   static const String call = '/calls/:roomId';
   static const String profile = '/profile';
   static const String spaces = '/spaces';
+  static const String jitsi = '/jitsi';
 }
 
 /// ChangeNotifier that GoRouter listens to for redirect re-evaluation.
@@ -35,6 +39,13 @@ class _AuthRefreshNotifier extends ChangeNotifier {
   void notify() => notifyListeners();
 }
 
+/// Routes that are accessible without authentication.
+const _publicRoutes = {
+  AppRoutes.welcome,
+  AppRoutes.login,
+  AppRoutes.jitsi,
+};
+
 @Riverpod(keepAlive: true)
 GoRouter router(Ref ref) {
   // Create once — notifier triggers re-redirect without recreating the router.
@@ -50,16 +61,22 @@ GoRouter router(Ref ref) {
       // Read (not watch) so redirect does not itself trigger provider changes.
       final authState = ref.read(authProvider);
       final isLoggedIn = authState is AuthAuthenticated;
-      final isOnLogin = state.matchedLocation == AppRoutes.login;
+      final currentPath = state.matchedLocation;
+      final isPublicRoute = _publicRoutes.contains(currentPath);
 
       // While restoring session, stay on splash.
       if (authState is AuthInitial || authState is AuthLoading) return null;
 
-      // Unauthenticated users must go to login.
-      if (!isLoggedIn && !isOnLogin) return AppRoutes.login;
+      // Unauthenticated users hitting a protected route → welcome screen.
+      if (!isLoggedIn && !isPublicRoute) return AppRoutes.welcome;
 
-      // Authenticated users should not see the login screen.
-      if (isLoggedIn && isOnLogin) return AppRoutes.rooms;
+      // Authenticated users on welcome or login → go straight to rooms.
+      if (isLoggedIn &&
+          (currentPath == AppRoutes.welcome ||
+              currentPath == AppRoutes.login ||
+              currentPath == AppRoutes.root)) {
+        return AppRoutes.rooms;
+      }
 
       return null;
     },
@@ -68,6 +85,10 @@ GoRouter router(Ref ref) {
         path: AppRoutes.root,
         builder: (context, state) => const _SplashRedirectPage(),
       ),
+      GoRoute(
+        path: AppRoutes.welcome,
+        builder: (context, state) => const WelcomeScreen(),
+      ),
       GoRoute(
         path: AppRoutes.login,
         builder: (context, state) => const LoginScreen(),
@@ -100,6 +121,13 @@ GoRouter router(Ref ref) {
         path: AppRoutes.spaces,
         builder: (context, state) => const SpacesScreen(),
       ),
+      GoRoute(
+        path: AppRoutes.jitsi,
+        builder: (context, state) {
+          final meetingUrl = state.extra as String? ?? '';
+          return JitsiScreen(meetingUrl: meetingUrl);
+        },
+      ),
     ],
   );
 }

lib/app/theme.dart

@@ -1,25 +1,30 @@
-// Version: 1.0.0 | Created: 2026-04-01
+// Version: 2.0.0 | Created: 2026-04-01 | Updated: 2026-07-03
 // M8Chat brand theme — dark and light variants.
-// Primary brand colour: #5C35C9 (deep purple). Accent: #7B5CF6.
+// Palette from the m8chat.au Elementor kit (kit post 8):
+//   Accent #1 "#1265ED", Blue Element "#3B8BFF", Ancop Blue "#010B46".
+// v2.0.0 replaces the old purple scheme, which did not match the website.
 
 import 'package:flutter/material.dart';
 
 /// M8Chat brand colours.
 abstract final class M8Colours {
-  static const Color brandPurple = Color(0xFF5C35C9);
-  static const Color accentPurple = Color(0xFF7B5CF6);
-  static const Color darkBackground = Color(0xFF0F0F1A);
-  static const Color darkSurface = Color(0xFF1A1A2E);
-  static const Color darkSurfaceVariant = Color(0xFF22223A);
-  static const Color onDarkSurface = Color(0xFFE8E8F0);
-  static const Color subtleText = Color(0xFF9898B0);
+  static const Color brandBlue = Color(0xFF1265ED);
+  static const Color accentBlue = Color(0xFF3B8BFF);
+  // Self message bubble — deeper than accentBlue so white text passes WCAG AA
+  // (white on #1265ED = 5.11:1; on #3B8BFF = 3.32:1, fails).
+  static const Color selfBubble = Color(0xFF1265ED);
+  static const Color darkBackground = Color(0xFF0A0F2E);
+  static const Color darkSurface = Color(0xFF131A42);
+  static const Color darkSurfaceVariant = Color(0xFF1C2452);
+  static const Color onDarkSurface = Color(0xFFE8ECF5);
+  static const Color subtleText = Color(0xFF96A0C2);
   static const Color errorRed = Color(0xFFCF6679);
   static const Color unreadGreen = Color(0xFF4CAF50);
 }
 
 /// Dark theme — default for M8Chat.
 ThemeData buildDarkTheme() {
-  const seed = M8Colours.brandPurple;
+  const seed = M8Colours.brandBlue;
 
   final scheme =
       ColorScheme.fromSeed(
@@ -28,7 +33,7 @@ ThemeData buildDarkTheme() {
       ).copyWith(
         surface: M8Colours.darkBackground,
         surfaceContainerHighest: M8Colours.darkSurface,
-        primary: M8Colours.accentPurple,
+        primary: M8Colours.accentBlue,
         onSurface: M8Colours.onDarkSurface,
         error: M8Colours.errorRed,
       );
@@ -41,11 +46,15 @@ ThemeData buildDarkTheme() {
       backgroundColor: M8Colours.darkSurface,
       foregroundColor: M8Colours.onDarkSurface,
       elevation: 0,
+      scrolledUnderElevation: 2,
       surfaceTintColor: Colors.transparent,
+      shape: const Border(
+        bottom: BorderSide(color: M8Colours.darkSurfaceVariant),
+      ),
     ),
     navigationBarTheme: NavigationBarThemeData(
       backgroundColor: M8Colours.darkSurface,
-      indicatorColor: M8Colours.accentPurple.withAlpha(51),
+      indicatorColor: M8Colours.accentBlue.withAlpha(51),
       labelTextStyle: WidgetStateProperty.all(
         const TextStyle(fontSize: 12, color: M8Colours.onDarkSurface),
       ),
@@ -59,14 +68,14 @@ ThemeData buildDarkTheme() {
       ),
       focusedBorder: OutlineInputBorder(
         borderRadius: BorderRadius.circular(12),
-        borderSide: const BorderSide(color: M8Colours.accentPurple, width: 2),
+        borderSide: const BorderSide(color: M8Colours.accentBlue, width: 2),
       ),
       labelStyle: const TextStyle(color: M8Colours.subtleText),
       hintStyle: const TextStyle(color: M8Colours.subtleText),
     ),
     elevatedButtonTheme: ElevatedButtonThemeData(
       style: ElevatedButton.styleFrom(
-        backgroundColor: M8Colours.accentPurple,
+        backgroundColor: M8Colours.accentBlue,
         foregroundColor: Colors.white,
         minimumSize: const Size.fromHeight(52),
         shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
@@ -97,7 +106,7 @@ ThemeData buildDarkTheme() {
 
 /// Light theme — follows system preference if user selects it.
 ThemeData buildLightTheme() {
-  const seed = M8Colours.brandPurple;
+  const seed = M8Colours.brandBlue;
 
   final scheme = ColorScheme.fromSeed(
     seedColor: seed,

lib/core/auth/auth_notifier.dart

@@ -1,88 +1,32 @@
-// Version: 1.1.1 | Created: 2026-04-01
+// Version: 2.1.0 | Created: 2026-04-01 | Updated: 2026-04-27
 // Riverpod notifier that owns the auth state machine.
-// All login/logout/session-restore transitions go through here.
+//
+// WEB SECURITY MODEL: Every visit requires a fresh login. No session
+// persistence. Only the Matrix device ID is saved across sessions so
+// encryption keys accumulate on one device instead of creating ghosts.
 
 import 'dart:async';
 
+import 'package:flutter/foundation.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 import '../../features/auth/data/auth_repository.dart';
 import '../../features/auth/domain/auth_failure.dart';
+import '../network/matrix_client.dart';
+import '../push/web_push_service.dart';
 import '../storage/sync_persistence_service.dart';
 import 'auth_state.dart';
-import 'secure_storage.dart';
 
 part 'auth_notifier.g.dart';
 
-/// The single source of truth for authentication state.
-///
-/// keepAlive: true — auth state must persist for the entire app lifetime.
-/// GoRouter watches this provider to decide which route to show.
 @Riverpod(keepAlive: true)
 class AuthNotifier extends _$AuthNotifier {
   @override
   AuthState build() {
-    // Kick off session restore immediately; start in [AuthInitial].
-    _restoreSession();
-    return const AuthState.initial();
+    // No session restore on web — always require fresh login.
+    return const AuthState.unauthenticated();
   }
 
-  /// Tries to restore a previous session from secure storage.
-  Future<void> _restoreSession() async {
-    state = const AuthState.loading();
-
-    final storage = ref.read(secureStorageProvider);
-    final credentials = await storage.loadCredentials();
-
-    if (credentials == null) {
-      state = const AuthState.unauthenticated();
-      return;
-    }
-
-    try {
-      final repo = ref.read(authRepositoryProvider);
-
-      // Timeout: client.init() starts the Matrix sync loop and can hang
-      // indefinitely if the token is expired or the server is unreachable.
-      // After 12 seconds we give up and send the user to the login screen.
-      await repo
-          .restoreSession(
-            accessToken: credentials.accessToken,
-            userId: credentials.userId,
-            deviceId: credentials.deviceId,
-          )
-          .timeout(
-            const Duration(seconds: 12),
-            onTimeout: () => throw Exception('Session restore timed out'),
-          );
-
-      state = AuthState.authenticated(
-        userId: credentials.userId,
-        accessToken: credentials.accessToken,
-        deviceId: credentials.deviceId,
-      );
-
-      // Resume background persistence — fire-and-forget so it never blocks auth.
-      try {
-        ref.read(syncPersistenceServiceProvider).start();
-      } catch (_) {
-        // Persistence failure is non-fatal; the app works without it.
-      }
-    } on AuthFailure {
-      // Stored credentials are invalid; force re-login.
-      await storage.clearCredentials();
-      state = const AuthState.unauthenticated();
-    } on Exception {
-      // Covers: timeout, network offline, Olm init failure.
-      // Clear stale credentials so the login screen appears cleanly.
-      await storage.clearCredentials();
-      state = const AuthState.unauthenticated();
-    }
-  }
-
-  /// Attempts to log in with [username] and [password].
-  ///
-  /// Transitions: loading → authenticated | unauthenticated(failure).
   Future<void> login({
     required String username,
     required String password,
@@ -91,38 +35,42 @@ class AuthNotifier extends _$AuthNotifier {
 
     try {
       final repo = ref.read(authRepositoryProvider);
-      final response = await repo.login(username: username, password: password);
+      debugPrint('[Auth] Logging in...');
 
-      final storage = ref.read(secureStorageProvider);
-      await storage.saveCredentials(
-        accessToken: response.accessToken,
-        userId: response.userId,
-        deviceId: response.deviceId,
+      final response = await repo.login(
+        username: username,
+        password: password,
       );
 
+      debugPrint('[Auth] Login OK as ${response.userId} '
+          'device=${response.deviceId}');
+
       state = AuthState.authenticated(
         userId: response.userId,
         accessToken: response.accessToken,
         deviceId: response.deviceId,
       );
 
-      // Start background sync-to-database persistence now that we are logged in.
-      ref.read(syncPersistenceServiceProvider).start();
+      // Start background sync-to-database persistence.
+      try {
+        ref.read(syncPersistenceServiceProvider).start();
+      } catch (_) {}
+
+      // Register Web Push subscription (fire-and-forget, non-fatal).
+      final client = ref.read(matrixClientProvider);
+      unawaited(setupWebPush(client));
     } on AuthFailure catch (failure) {
       state = AuthState.unauthenticated(failure: failure.userMessage);
     }
   }
 
-  /// Logs out the current user, clears storage, and resets to unauthenticated.
   Future<void> logout() async {
     state = const AuthState.loading();
 
     final repo = ref.read(authRepositoryProvider);
     await repo.logout();
 
-    final storage = ref.read(secureStorageProvider);
-    await storage.clearCredentials();
-
+    // Keep the device ID in storage so the next login reuses it.
     state = const AuthState.unauthenticated();
   }
 }

lib/core/auth/secure_storage.dart

@@ -1,83 +1,30 @@
-// Version: 1.0.0 | Created: 2026-04-01
-// Typed wrapper around flutter_secure_storage.
-// All token read/write operations go through this class — never call
-// flutter_secure_storage directly from feature code.
+// Version: 2.0.0 | Created: 2026-04-01 | Updated: 2026-04-11
+// Minimal storage: only the Matrix device ID is persisted so that
+// encryption keys accumulate on one device across logins.
+// Access tokens are NOT stored — every browser visit requires login.
 
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
-import '../config/app_config.dart';
-
 part 'secure_storage.g.dart';
 
-/// Provides a configured [SecureStorage] instance.
 @Riverpod(keepAlive: true)
 SecureStorage secureStorage(Ref ref) => const SecureStorage();
 
-/// Typed wrapper around [FlutterSecureStorage].
-///
-/// Uses AES encryption on Android and Keychain on iOS.
-/// On Web, data is stored in localStorage with encryption — acceptable for
-/// access tokens but NOT for E2EE private keys (Phase 2 concern).
 class SecureStorage {
   const SecureStorage();
 
+  static const _kDeviceId = 'm8chat_device_id';
+
   static const FlutterSecureStorage _storage = FlutterSecureStorage(
     aOptions: AndroidOptions(encryptedSharedPreferences: true),
   );
 
-  Future<void> saveCredentials({
-    required String accessToken,
-    required String userId,
-    required String deviceId,
-  }) async {
-    await _storage.write(
-      key: AppConfig.storageKeyAccessToken,
-      value: accessToken,
-    );
-    await _storage.write(key: AppConfig.storageKeyUserId, value: userId);
-    await _storage.write(key: AppConfig.storageKeyDeviceId, value: deviceId);
-    await _storage.write(
-      key: AppConfig.storageKeyHomeserver,
-      value: AppConfig.matrixBaseUrl,
-    );
+  Future<void> saveDeviceId(String deviceId) async {
+    await _storage.write(key: _kDeviceId, value: deviceId);
   }
 
-  Future<StoredCredentials?> loadCredentials() async {
-    final accessToken = await _storage.read(
-      key: AppConfig.storageKeyAccessToken,
-    );
-    final userId = await _storage.read(key: AppConfig.storageKeyUserId);
-    final deviceId = await _storage.read(key: AppConfig.storageKeyDeviceId);
-
-    if (accessToken == null || userId == null || deviceId == null) {
-      return null;
-    }
-
-    return StoredCredentials(
-      accessToken: accessToken,
-      userId: userId,
-      deviceId: deviceId,
-    );
-  }
-
-  Future<void> clearCredentials() async {
-    await _storage.delete(key: AppConfig.storageKeyAccessToken);
-    await _storage.delete(key: AppConfig.storageKeyUserId);
-    await _storage.delete(key: AppConfig.storageKeyDeviceId);
-    await _storage.delete(key: AppConfig.storageKeyHomeserver);
+  Future<String?> loadDeviceId() async {
+    return _storage.read(key: _kDeviceId);
   }
 }
-
-/// Holds the credentials retrieved from secure storage.
-class StoredCredentials {
-  const StoredCredentials({
-    required this.accessToken,
-    required this.userId,
-    required this.deviceId,
-  });
-
-  final String accessToken;
-  final String userId;
-  final String deviceId;
-}

lib/core/config/app_config.dart

@@ -1,9 +1,6 @@
-// Version: 1.0.0 | Created: 2026-04-01
+// Version: 2.1.0 | Created: 2026-04-01 | Updated: 2026-07-03
 // App-wide constants. Change matrixBaseUrl for different environments.
 
-/// Central configuration for the M8Chat application.
-/// All server URLs and app-level constants live here — never scatter
-/// magic strings through feature code.
 abstract final class AppConfig {
   static const String matrixBaseUrl = 'https://matrix.m8chat.au';
   static const String matrixServerName = 'matrix.m8chat.au';
@@ -14,11 +11,8 @@ abstract final class AppConfig {
     'turns:matrix.m8chat.au:5349',
   ];
   static const String appName = 'M8Chat';
-  static const String appVersion = '1.0.0';
+  static const String appVersion = '1.11.0';
 
-  // Secure storage key names
-  static const String storageKeyAccessToken = 'access_token';
-  static const String storageKeyUserId = 'user_id';
-  static const String storageKeyDeviceId = 'device_id';
-  static const String storageKeyHomeserver = 'homeserver';
+  // Jitsi conferencing
+  static const String jitsiDomain = 'conf.m8chat.au';
 }

lib/core/push/web_push_service.dart

@@ -0,0 +1,178 @@
+// Version: 1.0.0 | Created: 2026-04-27
+// Web Push subscription and Matrix pusher registration.
+// Only active on web — no-ops on other platforms.
+//
+// Flow:
+//  1. registerPushServiceWorker() — register push_sw.js (called at startup)
+//  2. setupWebPush(client)        — called after login; requests permission,
+//     subscribes to Web Push, registers the subscription as a Matrix pusher.
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:js_interop';
+import 'dart:js_interop_unsafe';
+
+import 'package:flutter/foundation.dart';
+import 'package:matrix/matrix.dart';
+import 'package:web/web.dart' as web;
+
+const _kVapidPublicKey =
+    'BPP0AqC7qTxspQn1i0x2sPbPj3owJTTkhV256A67VUK9748NjaBfbMrQBJtI58foVSVpbk2n390NIq_w2glNjs8';
+
+const _kAppId = 'au.m8chat.web.push';
+const _kPushGatewayUrl = 'https://matrix.m8chat.au/_matrix/push/v1/notify';
+
+/// Registers push_sw.js at startup so the browser knows the service worker
+/// before the user logs in. Idempotent. No-op on non-web platforms.
+Future<void> registerPushServiceWorker() async {
+  if (!kIsWeb) return;
+  try {
+    await _registerServiceWorker();
+  } catch (e) {
+    debugPrint('[Push] SW pre-registration failed (non-fatal): $e');
+  }
+}
+
+/// Called after login. Requests notification permission, subscribes to Web
+/// Push using the VAPID public key, and registers the subscription as a
+/// Matrix pusher so Synapse routes notifications through Sygnal → browser.
+///
+/// Idempotent — safe to call on every login. No-op on non-web platforms.
+Future<void> setupWebPush(Client client) async {
+  if (!kIsWeb) return;
+
+  try {
+    final sw = await _registerServiceWorker();
+    if (sw == null) {
+      debugPrint('[Push] SW not available — push skipped');
+      return;
+    }
+
+    final permission = await _requestPermission();
+    if (permission != 'granted') {
+      debugPrint('[Push] Notification permission $permission — skipped');
+      return;
+    }
+
+    final sub = await _subscribe(sw);
+    if (sub == null) {
+      debugPrint('[Push] Could not create push subscription');
+      return;
+    }
+
+    await _registerPusher(client, sub);
+  } catch (e) {
+    debugPrint('[Push] Setup failed (non-fatal): $e');
+  }
+}
+
+// ---------------------------------------------------------------------------
+
+Future<web.ServiceWorkerRegistration?> _registerServiceWorker() async {
+  if (!_pushSupported()) return null;
+
+  try {
+    final reg = await web.window.navigator.serviceWorker
+        .register('/push_sw.js'.toJS, web.RegistrationOptions(scope: '/'))
+        .toDart;
+    debugPrint('[Push] Service worker registered: ${reg.scope}');
+    return reg;
+  } catch (e) {
+    debugPrint('[Push] Service worker error: $e');
+    return null;
+  }
+}
+
+Future<String> _requestPermission() async {
+  try {
+    final result = await web.Notification.requestPermission().toDart;
+    return result.toDart;
+  } catch (_) {
+    return 'denied';
+  }
+}
+
+Future<web.PushSubscription?> _subscribe(
+    web.ServiceWorkerRegistration reg) async {
+  try {
+    // Re-use existing subscription if the browser already has one.
+    final existing = await reg.pushManager.getSubscription().toDart;
+    if (existing != null) {
+      debugPrint('[Push] Reusing existing push subscription');
+      return existing;
+    }
+
+    final keyBytes = _vapidKeyToBytes(_kVapidPublicKey);
+    final sub = await reg.pushManager
+        .subscribe(web.PushSubscriptionOptionsInit(
+          userVisibleOnly: true,
+          applicationServerKey: keyBytes,
+        ))
+        .toDart;
+    debugPrint('[Push] New subscription: ${sub.endpoint}');
+    return sub;
+  } catch (e) {
+    debugPrint('[Push] Subscribe error: $e');
+    return null;
+  }
+}
+
+Future<void> _registerPusher(
+    Client client, web.PushSubscription sub) async {
+  final json = sub.toJSON();
+  final endpoint = json.endpoint;
+  if (endpoint.isEmpty) return;
+
+  // Extract p256dh and auth keys from the subscription.
+  final keysObj = json.keys;
+  final p256dh = _jsObjectGet(keysObj, 'p256dh') ?? '';
+  final auth = _jsObjectGet(keysObj, 'auth') ?? '';
+
+  await client.postPusher(
+    Pusher(
+      pushkey: endpoint,
+      kind: 'http',
+      appId: _kAppId,
+      appDisplayName: 'M8Chat Web',
+      deviceDisplayName: 'Web browser',
+      lang: 'en',
+      data: PusherData(
+        url: Uri.parse(_kPushGatewayUrl),
+        format: 'event_id_only',
+        additionalProperties: {
+          'keys': {'p256dh': p256dh, 'auth': auth},
+        },
+      ),
+    ),
+  );
+  debugPrint('[Push] Matrix pusher registered');
+}
+
+/// Converts a URL-safe base64 VAPID public key to a JS Uint8Array.
+JSUint8Array _vapidKeyToBytes(String base64Url) {
+  final padded = base64Url +
+      '=' * ((4 - base64Url.length % 4) % 4);
+  final standard = padded.replaceAll('-', '+').replaceAll('_', '/');
+  final bytes = base64Decode(standard);
+  return bytes.toJS;
+}
+
+/// Reads a string property from a JSObject via js_interop.
+String? _jsObjectGet(JSObject obj, String key) {
+  try {
+    final val = obj.getProperty<JSAny?>(key.toJS);
+    if (val == null || val.isUndefinedOrNull) return null;
+    return (val as JSString).toDart;
+  } catch (_) {
+    return null;
+  }
+}
+
+bool _pushSupported() {
+  try {
+    web.window.navigator.serviceWorker;
+    return true;
+  } catch (_) {
+    return false;
+  }
+}

lib/features/auth/data/auth_repository.dart

@@ -1,7 +1,8 @@
-// Version: 1.1.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 2.0.0 | Created: 2026-04-01 | Updated: 2026-04-11
 // Auth repository: handles all Matrix login/logout API interactions.
 // Uses the Matrix Dart SDK — no raw HTTP calls for auth.
 
+import 'package:flutter/foundation.dart';
 import 'package:matrix/matrix.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
@@ -34,15 +35,16 @@ class AuthRepository {
     required String password,
   }) async {
     try {
-      // Set homeserver directly — avoids network round-trips and version checks
-      // that checkHomeserver() makes. The setter is public in matrix 0.33.0.
       _client.homeserver = Uri.parse(AppConfig.matrixBaseUrl);
-      return await _client.login(
+      final response = await _client.login(
         LoginType.mLoginPassword,
         identifier: AuthenticationUserIdentifier(user: username),
         password: password,
         initialDeviceDisplayName: AppConfig.appName,
       );
+      debugPrint('[M8Chat] Login complete. encryptionEnabled=${_client.encryptionEnabled}');
+      debugPrint('[M8Chat] encryption=${_client.encryption}');
+      return response;
     } on MatrixException catch (e) {
       throw switch (e.errcode) {
         'M_FORBIDDEN' => const AuthFailure.invalidCredentials(),
@@ -77,19 +79,5 @@ class AuthRepository {
     }
   }
 
-  /// Restores an existing Matrix session using a stored access token.
-  Future<void> restoreSession({
-    required String accessToken,
-    required String userId,
-    required String deviceId,
-  }) async {
-    await _client.init(
-      newToken: accessToken,
-      newUserID: userId,
-      newDeviceID: deviceId,
-      newDeviceName: AppConfig.appName,
-      newHomeserver: Uri.parse(AppConfig.matrixBaseUrl),
-      newOlmAccount: null,
-    );
-  }
+  // restoreSession() removed — web app requires fresh login every visit.
 }

lib/features/auth/presentation/login_screen.dart

@@ -1,4 +1,4 @@
-// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-04-03
+// Version: 1.3.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // Login screen. Username + password only. No registration link.
 // Respects system theme preference.
 
@@ -55,7 +55,15 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
     final theme = Theme.of(context);
 
     return Scaffold(
-      body: SafeArea(
+      body: DecoratedBox(
+        decoration: const BoxDecoration(
+          gradient: LinearGradient(
+            begin: Alignment.topCenter,
+            end: Alignment.bottomCenter,
+            colors: [Color(0xFF0A0F2E), Color(0xFF131A42)],
+          ),
+        ),
+        child: SafeArea(
         child: Center(
           child: SingleChildScrollView(
             padding: const EdgeInsets.symmetric(horizontal: 32, vertical: 24),
@@ -89,6 +97,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
             ),
           ),
         ),
+        ),
       ),
     );
   }

lib/features/calls/data/call_e2ee.dart

@@ -0,0 +1,185 @@
+// Version: 1.0.0 | Created: 2026-04-10
+// E2EE key exchange for LiveKit calls via Matrix to-device events.
+// Implements the m.rtc.encryption_keys protocol for interop with Element X.
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:math';
+import 'package:flutter/foundation.dart';
+import 'package:livekit_client/livekit_client.dart';
+import 'package:matrix/matrix.dart' show Client, DeviceKeys, ToDeviceEvent;
+
+/// Event type used by Element X / Element Call for key exchange.
+const kEncryptionKeysEventType = 'm.rtc.encryption_keys';
+
+/// Manages E2EE key generation, distribution, and reception for LiveKit calls.
+///
+/// Flow:
+/// 1. [init] creates a per-participant [BaseKeyProvider] and generates a local key.
+/// 2. After LiveKit connects, call [setLocalKey] with the local participant identity.
+/// 3. Call [sendKeyToParticipants] to share our key via encrypted to-device events.
+/// 4. Incoming keys from Element X are received via [Client.onToDeviceEvent] and
+///    set on the [BaseKeyProvider] automatically.
+class CallE2EEManager {
+  CallE2EEManager({
+    required Client client,
+    required String matrixRoomId,
+  })  : _client = client,
+        _matrixRoomId = matrixRoomId;
+
+  final Client _client;
+  final String _matrixRoomId;
+  BaseKeyProvider? _keyProvider;
+  StreamSubscription<ToDeviceEvent>? _toDeviceSub;
+  Uint8List? _localKey;
+  final int _localKeyIndex = 0;
+
+  BaseKeyProvider? get keyProvider => _keyProvider;
+
+  /// Create the key provider and start listening for incoming keys.
+  Future<BaseKeyProvider> init() async {
+    _keyProvider = await BaseKeyProvider.create(sharedKey: false);
+
+    // Generate a random 32-byte encryption key for our media tracks.
+    _localKey = _secureRandomBytes(32);
+
+    // Listen for incoming encryption keys from other call participants.
+    _toDeviceSub = _client.onToDeviceEvent.stream.listen(_onToDeviceEvent);
+
+    debugPrint('[E2EE] Key provider created, local key generated '
+        '(${base64Encode(_localKey!).substring(0, 8)}…)');
+    return _keyProvider!;
+  }
+
+  /// Set our local key on the provider using the LiveKit participant identity.
+  /// Call this AFTER the LiveKit Room is connected and localParticipant is available.
+  Future<void> setLocalKey(String localIdentity) async {
+    if (_keyProvider == null || _localKey == null) return;
+    await _keyProvider!.setRawKey(
+      _localKey!,
+      participantId: localIdentity,
+      keyIndex: _localKeyIndex,
+    );
+    debugPrint('[E2EE] Local key set for identity=$localIdentity');
+  }
+
+  /// Send our encryption key to all other call members via encrypted to-device.
+  Future<void> sendKeyToParticipants() async {
+    if (_localKey == null) return;
+
+    final room = _client.getRoomById(_matrixRoomId);
+    if (room == null) {
+      debugPrint('[E2EE] Room $_matrixRoomId not found — cannot send keys');
+      return;
+    }
+
+    // Find other participants from the MSC3401 call.member state events.
+    final memberEvents =
+        room.states['org.matrix.msc3401.call.member'] ?? {};
+
+    final content = <String, Object>{
+      'keys': [
+        {'index': _localKeyIndex, 'key': base64Encode(_localKey!)},
+      ],
+      'call_id': '',
+      'device_id': _client.deviceID ?? '',
+      'room_id': _matrixRoomId,
+    };
+
+    for (final entry in memberEvents.entries) {
+      final userId = entry.key;
+      if (userId == _client.userID) continue;
+
+      // Parse device_id from the call.member event to target the correct device.
+      final memberships =
+          entry.value.content['memberships'] as List<dynamic>? ?? [];
+      if (memberships.isEmpty) continue;
+
+      await _client.userDeviceKeysLoading;
+      final deviceKeyMap = _client.userDeviceKeys[userId]?.deviceKeys;
+      if (deviceKeyMap == null || deviceKeyMap.isEmpty) {
+        debugPrint('[E2EE] No device keys for $userId — skipping');
+        continue;
+      }
+
+      // Send to all devices of this user that are in the call.
+      final List<DeviceKeys> targets = [];
+      for (final m in memberships) {
+        final deviceId = m['device_id'] as String?;
+        if (deviceId != null && deviceKeyMap.containsKey(deviceId)) {
+          targets.add(deviceKeyMap[deviceId]!);
+        }
+      }
+
+      // Fallback: if no specific device matched, send to all devices.
+      if (targets.isEmpty) {
+        targets.addAll(deviceKeyMap.values);
+      }
+
+      try {
+        await _client.sendToDeviceEncrypted(
+          targets,
+          kEncryptionKeysEventType,
+          content,
+        );
+        debugPrint(
+            '[E2EE] Sent key to $userId (${targets.length} device(s))');
+      } catch (e) {
+        debugPrint('[E2EE] Failed to send key to $userId: $e');
+      }
+    }
+  }
+
+  /// Handle incoming to-device encryption key events from other participants.
+  void _onToDeviceEvent(ToDeviceEvent event) {
+    if (event.type != kEncryptionKeysEventType) return;
+
+    // Only process keys for our active call room.
+    final eventRoomId = event.content['room_id'] as String?;
+    if (eventRoomId != null && eventRoomId != _matrixRoomId) return;
+
+    final keys = event.content['keys'] as List<dynamic>?;
+    if (keys == null || keys.isEmpty) {
+      debugPrint(
+          '[E2EE] Received $kEncryptionKeysEventType with empty keys '
+          'from ${event.sender}');
+      return;
+    }
+
+    final senderId = event.sender;
+    debugPrint('[E2EE] Received encryption key(s) from $senderId');
+
+    for (final keyEntry in keys) {
+      final index = (keyEntry['index'] as num?)?.toInt() ?? 0;
+      final keyB64 = keyEntry['key'] as String?;
+      if (keyB64 == null) continue;
+
+      final keyBytes = base64Decode(keyB64);
+
+      // The participant identity in LiveKit should match the Matrix user ID
+      // (set by lk-jwt-service). Log both for debugging.
+      _keyProvider?.setRawKey(
+        keyBytes,
+        participantId: senderId,
+        keyIndex: index,
+      );
+      debugPrint(
+          '[E2EE] Key set for participant=$senderId index=$index '
+          '(${keyB64.substring(0, 8)}…)');
+    }
+  }
+
+  Future<void> dispose() async {
+    await _toDeviceSub?.cancel();
+    _toDeviceSub = null;
+    _localKey = null;
+    _keyProvider = null;
+    debugPrint('[E2EE] Disposed');
+  }
+
+  static Uint8List _secureRandomBytes(int length) {
+    final rng = Random.secure();
+    return Uint8List.fromList(
+        List<int>.generate(length, (_) => rng.nextInt(256)));
+  }
+}

lib/features/calls/data/livekit_service.dart

@@ -1,10 +1,10 @@
-// Version: 1.3.0 | Created: 2026-04-01 | Updated: 2026-04-03
+// Version: 1.4.0 | Created: 2026-04-01 | Updated: 2026-04-10
 // LiveKitService — fetches a JWT from the Matrix server's /_matrix/livekit/jwt
 // endpoint, then connects a LiveKit Room using that token.
 //
-// The JWT endpoint is defined in AppConfig.livekitJwtUrl and uses the Matrix
-// access token as Bearer auth. The LiveKit server URL is the same host as the
-// Matrix server (as configured on chat.m8chat.au).
+// E2EE: Frame encryption is enabled via livekit_client's E2EEOptions.
+// Encryption keys are exchanged with Element X via m.rtc.encryption_keys
+// to-device events (see call_e2ee.dart).
 
 import 'dart:convert';
 import 'dart:math';
@@ -19,6 +19,7 @@ import '../../../core/auth/auth_notifier.dart';
 import '../../../core/auth/auth_state.dart';
 import '../../../core/config/app_config.dart';
 import '../../../core/network/matrix_client.dart';
+import 'call_e2ee.dart';
 
 part 'livekit_service.g.dart';
 
@@ -67,6 +68,7 @@ class LiveKitService {
   Room? _activeRoom;
   String? _activeMatrixRoomId;
   String? _membershipId;
+  CallE2EEManager? _e2eeManager;
 
   Room? get activeRoom => _activeRoom;
 
@@ -111,14 +113,37 @@ class LiveKitService {
     _activeMatrixRoomId = matrixRoomId;
     debugPrint('[LiveKit] Call member state event sent');
 
-    // Step 3 — connect to LiveKit
-    final room = Room();
+    // Step 3 — initialise E2EE key exchange
+    _e2eeManager = CallE2EEManager(
+      client: client,
+      matrixRoomId: matrixRoomId,
+    );
+    final keyProvider = await _e2eeManager!.init();
+
+    // Step 4 — connect to LiveKit with frame encryption
+    // COOP/COEP headers on the server enable SharedArrayBuffer for the
+    // E2EE web worker. Without them the worker crashes.
+    final room = Room(
+      roomOptions: RoomOptions(
+        e2eeOptions: E2EEOptions(keyProvider: keyProvider),
+      ),
+    );
     try {
       await room.connect(livekitUrl, jwt);
       _activeRoom = room;
+
+      // Step 5 — set our local key and share with other participants
+      final localIdentity = room.localParticipant?.identity;
+      debugPrint('[LiveKit] Connected, local identity: $localIdentity');
+      if (localIdentity != null) {
+        await _e2eeManager!.setLocalKey(localIdentity);
+      }
+      await _e2eeManager!.sendKeyToParticipants();
+
       return LiveKitConnected(room: room);
     } on Exception catch (e) {
-      // Clean up the state event on failure
+      await _e2eeManager?.dispose();
+      _e2eeManager = null;
       await _clearCallMemberEvent(client, matrixRoomId, userId);
       await room.disconnect();
       await room.dispose();
@@ -136,6 +161,10 @@ class LiveKitService {
     _activeMatrixRoomId = null;
     _membershipId = null;
 
+    // Clean up E2EE key exchange
+    await _e2eeManager?.dispose();
+    _e2eeManager = null;
+
     // Step 1: Leave LiveKit — Element X will see us disappear from the SFU
     if (room != null) {
       await room.disconnect();
@@ -255,6 +284,7 @@ class LiveKitService {
   }
 
   /// Clear the call.member state event (remove our membership).
+  /// Element X expects empty content `{}` — not `{'memberships': []}`.
   Future<void> _clearCallMemberEvent(
     Client client,
     String matrixRoomId,
@@ -265,8 +295,9 @@ class LiveKitService {
         matrixRoomId,
         _kCallMemberEventType,
         userId,
-        {'memberships': []},
+        {},
       );
+      debugPrint('[LiveKit] Call member event cleared for $userId');
     } catch (e) {
       debugPrint('[LiveKit] Failed to clear call member event: $e');
     }

lib/features/calls/data/matrixrtc_repository.dart

@@ -1,6 +1,9 @@
-// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 1.3.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // MatrixRTC repository — handles outgoing call invites and detects incoming
-// calls via m.call.invite events per MSC4143 (MatrixRTC spec).
+// calls. v1.3.0 adds MSC3401 call.member state-event detection: Element X
+// (and app2 itself) signals group calls with org.matrix.msc3401.call.member,
+// not legacy m.call.invite, so incoming calls from Element X were invisible.
+// Both paths now guard against stale events replayed during initial sync.
 //
 // Incoming calls are surfaced via the incomingCallStream so the
 // IncomingCallOverlay can react to them.
@@ -79,13 +82,39 @@ class MatrixRtcRepository {
     }, type: EventTypes.CallInvite);
   }
 
-  void _onEvent(EventUpdate update) {
-    if (update.type != EventUpdateType.timeline) return;
-    if (update.content['type'] != EventTypes.CallInvite) return;
+  /// MSC3401 MatrixRTC call membership state event (what Element X sends).
+  static const _kCallMemberEventType = 'org.matrix.msc3401.call.member';
 
+  /// Events older than this are sync replays, not live calls.
+  static const _maxEventAge = Duration(seconds: 90);
+
+  /// Membership keys we have already alerted on (roomId|sender|membership).
+  final Set<String> _seenMembershipKeys = {};
+
+  void _onEvent(EventUpdate update) {
+    final eventType = update.content['type'] as String?;
+    if (eventType == EventTypes.CallInvite &&
+        update.type == EventUpdateType.timeline) {
+      _onCallInvite(update);
+    } else if (eventType == _kCallMemberEventType &&
+        (update.type == EventUpdateType.timeline ||
+            update.type == EventUpdateType.state)) {
+      _onCallMember(update);
+    }
+  }
+
+  bool _isStale(EventUpdate update) {
+    final ts = update.content['origin_server_ts'] as int?;
+    if (ts == null) return true;
+    final age = DateTime.now().millisecondsSinceEpoch - ts;
+    return age > _maxEventAge.inMilliseconds;
+  }
+
+  /// Legacy 1:1 call invites (app2 → app2).
+  void _onCallInvite(EventUpdate update) {
     final senderId = update.content['sender'] as String?;
-    // Ignore our own invites.
-    if (senderId == _myUserId) return;
+    // Ignore our own invites and stale events replayed on initial sync.
+    if (senderId == _myUserId || _isStale(update)) return;
 
     final roomId = update.roomID;
     final content = update.content['content'] as Map<String, dynamic>?;
@@ -93,21 +122,66 @@ class MatrixRtcRepository {
 
     final callId = content['call_id'] as String?;
     if (callId == null) return;
+    if (!_seenMembershipKeys.add('$roomId|$senderId|$callId')) return;
 
-    final room = _client.getRoomById(roomId);
-    final senderProfile = room?.unsafeGetUserFromMemoryOrFallback(
-      senderId ?? '',
+    _emitIncomingCall(
+      roomId: roomId,
+      senderId: senderId ?? '',
+      callId: callId,
+      isVideo: content['offer'] != null,
     );
+  }
+
+  /// MSC3401 group-call membership: someone (e.g. Element X) joined a call.
+  void _onCallMember(EventUpdate update) {
+    final senderId = update.content['sender'] as String?;
+    if (senderId == null || senderId == _myUserId || _isStale(update)) return;
+
+    final content = update.content['content'] as Map<String, dynamic>?;
+    final memberships = content?['memberships'] as List<dynamic>?;
+    // Empty/cleared memberships means the caller hung up — nothing to show.
+    if (memberships == null || memberships.isEmpty) return;
+
+    final membership = memberships.first as Map<String, dynamic>;
+    if (membership['application'] != 'm.call') return;
+
+    final expiresTs = membership['expires_ts'] as int?;
+    if (expiresTs != null &&
+        expiresTs < DateTime.now().millisecondsSinceEpoch) {
+      return;
+    }
+
+    final membershipId =
+        (membership['membershipID'] ?? membership['call_id'] ?? '').toString();
+    final roomId = update.roomID;
+    if (!_seenMembershipKeys.add('$roomId|$senderId|$membershipId')) return;
+
+    _emitIncomingCall(
+      roomId: roomId,
+      senderId: senderId,
+      callId: membershipId.isEmpty ? 'matrixrtc' : membershipId,
+      isVideo: true,
+    );
+  }
+
+  void _emitIncomingCall({
+    required String roomId,
+    required String senderId,
+    required String callId,
+    required bool isVideo,
+  }) {
+    final room = _client.getRoomById(roomId);
+    final senderProfile = room?.unsafeGetUserFromMemoryOrFallback(senderId);
 
     _incomingCallController.add(
       IncomingCall(
         callId: callId,
         roomId: roomId,
-        callerId: senderId ?? '',
+        callerId: senderId,
         callerDisplayName:
-            senderProfile?.displayName ?? senderId?.matrixLocalpart ?? '',
+            senderProfile?.displayName ?? senderId.matrixLocalpart,
         callerAvatarUrl: resolveMxcUrl(_client, senderProfile?.avatarUrl),
-        isVideo: (content['offer'] != null),
+        isVideo: isVideo,
       ),
     );
   }

lib/features/calls/presentation/incoming_call_overlay.dart

@@ -1,10 +1,10 @@
-// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 1.3.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // IncomingCallOverlay — full-screen overlay shown when an m.call.invite
 // arrives. Displays caller name/avatar, and Accept / Decline buttons.
 
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:go_router/go_router.dart';
+import '../../../app/router.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 import '../../../shared/widgets/matrix_avatar.dart';
@@ -58,20 +58,27 @@ class IncomingCallOverlayHost extends ConsumerWidget {
   }
 }
 
-class _IncomingCallOverlay extends StatefulWidget {
+class _IncomingCallOverlay extends ConsumerStatefulWidget {
   const _IncomingCallOverlay({required this.call});
 
   final IncomingCall call;
 
   @override
-  State<_IncomingCallOverlay> createState() => _IncomingCallOverlayState();
+  ConsumerState<_IncomingCallOverlay> createState() =>
+      _IncomingCallOverlayState();
 }
 
-class _IncomingCallOverlayState extends State<_IncomingCallOverlay> {
+class _IncomingCallOverlayState extends ConsumerState<_IncomingCallOverlay> {
   bool _dismissed = false;
+  String? _dismissedForCallId;
 
   @override
   Widget build(BuildContext context) {
+    // A new call resets the dismissal so the overlay can show again.
+    if (_dismissedForCallId != widget.call.callId) {
+      _dismissed = false;
+      _dismissedForCallId = widget.call.callId;
+    }
     if (_dismissed) return const SizedBox.shrink();
 
     final theme = Theme.of(context);
@@ -129,9 +136,13 @@ class _IncomingCallOverlayState extends State<_IncomingCallOverlay> {
                     label: 'Accept',
                     colour: Colors.green,
                     onTap: () {
-                      context.push(
-                        '/calls/${Uri.encodeComponent(call.roomId)}',
-                      );
+                      // The overlay lives above the router's navigator, so
+                      // context.push would not find GoRouter — use the
+                      // router instance directly, then dismiss the overlay.
+                      setState(() => _dismissed = true);
+                      ref
+                          .read(routerProvider)
+                          .push('/calls/${Uri.encodeComponent(call.roomId)}');
                     },
                   ),
                 ],

lib/features/chat/data/chat_repository.dart

@@ -1,6 +1,12 @@
-// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 1.5.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // Chat repository — bridges Matrix SDK timeline to app domain models.
 // Phase 2 additions: sendFile, sendReaction, redactEvent, reply support.
+// v1.5.0: keep one live Timeline per room so scroll-back history pagination
+// (requestHistory) acts on the same instance the stream is watching, and
+// re-yield on the timeline's own onUpdate (fires for both live events and
+// history) rather than only on onSync (which does not fire for pagination).
+
+import 'dart:async';
 
 import 'package:matrix/matrix.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
@@ -22,6 +28,10 @@ class ChatRepository {
 
   final Client _client;
 
+  /// Live timelines keyed by room id, so [loadMoreMessages] paginates the
+  /// same instance the active [watchTimeline] stream is mapping.
+  final Map<String, Timeline> _timelines = {};
+
   Room? _getRoom(String roomId) => _client.getRoomById(roomId);
 
   /// Returns a stream of message lists for [roomId].
@@ -29,20 +39,32 @@ class ChatRepository {
     final room = _getRoom(roomId);
     if (room == null) return;
 
-    final timeline = await room.getTimeline();
+    final signal = StreamController<void>();
+    final timeline = await room.getTimeline(
+      onUpdate: () {
+        if (!signal.isClosed) signal.add(null);
+      },
+    );
+    _timelines[roomId] = timeline;
 
-    yield await _mapTimeline(timeline, room);
-
-    await for (final update in _client.onSync.stream) {
-      final updatesThisRoom = update.rooms?.join?.containsKey(roomId) ?? false;
-      if (updatesThisRoom) {
+    try {
+      yield await _mapTimeline(timeline, room);
+      await for (final _ in signal.stream) {
         yield await _mapTimeline(timeline, room);
       }
+    } finally {
+      timeline.cancelSubscriptions();
+      if (identical(_timelines[roomId], timeline)) {
+        _timelines.remove(roomId);
+      }
+      await signal.close();
     }
-
-    timeline.cancelSubscriptions();
   }
 
+  /// Whether [roomId] has older messages that can still be paginated in.
+  bool canLoadMore(String roomId) =>
+      _timelines[roomId]?.canRequestHistory ?? false;
+
   /// Sends a plain text message. Supports replies via [inReplyToEventId].
   Future<void> sendTextMessage(
     String roomId,
@@ -73,6 +95,17 @@ class ChatRepository {
     await room.sendFileEvent(file);
   }
 
+  /// Replaces the body of an existing text message (m.replace edit).
+  Future<void> editMessage(
+    String roomId,
+    String eventId,
+    String newText,
+  ) async {
+    final room = _getRoom(roomId);
+    if (room == null) return;
+    await room.sendTextEvent(newText, editEventId: eventId);
+  }
+
   /// Sends an emoji reaction to [eventId].
   Future<void> sendReaction(String roomId, String eventId, String emoji) async {
     final room = _getRoom(roomId);
@@ -96,11 +129,12 @@ class ChatRepository {
     await room.setReadMarker(lastEventId, mRead: lastEventId);
   }
 
-  /// Requests older messages (pagination).
+  /// Requests older messages (pagination) on the active timeline for [roomId].
+  /// No-op if there is no live timeline or no more history to fetch.
   Future<void> loadMoreMessages(String roomId) async {
-    final room = _getRoom(roomId);
-    if (room == null) return;
-    await room.requestHistory();
+    final timeline = _timelines[roomId];
+    if (timeline == null || !timeline.canRequestHistory) return;
+    await timeline.requestHistory();
   }
 
   /// Event types that should never appear in the chat timeline.
@@ -191,6 +225,7 @@ class ChatRepository {
 
   MessageType _messageType(Event event) {
     if (event.redacted) return MessageType.redacted;
+    if (event.type == EventTypes.Encrypted) return MessageType.encrypted;
 
     return switch (event.messageType) {
       MessageTypes.Text => MessageType.text,

lib/features/chat/domain/message_model.dart

@@ -1,4 +1,4 @@
-// Version: 1.0.0 | Created: 2026-04-01
+// Version: 1.1.0 | Created: 2026-04-01 | Updated: 2026-04-10
 // Immutable message model for the chat timeline.
 
 import 'package:freezed_annotation/freezed_annotation.dart';
@@ -14,6 +14,7 @@ enum MessageType {
   video,
   sticker,
   redacted,
+  encrypted,
   unsupported,
 }
 

lib/features/chat/presentation/chat_controller.dart

@@ -1,4 +1,4 @@
-// Version: 1.1.0 | Created: 2026-04-01
+// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // Riverpod providers for chat timeline, send, upload, react, reply.
 
 import 'package:matrix/matrix.dart' show MatrixFile;
@@ -84,6 +84,27 @@ class SendReaction extends _$SendReaction {
   }
 }
 
+/// Edits an existing text message.
+@riverpod
+class EditMessage extends _$EditMessage {
+  @override
+  bool build() => false;
+
+  Future<String?> edit(String roomId, String eventId, String newText) async {
+    state = true;
+    try {
+      await ref
+          .read(chatRepositoryProvider)
+          .editMessage(roomId, eventId, newText);
+      return null;
+    } on Exception catch (e) {
+      return e.toString();
+    } finally {
+      state = false;
+    }
+  }
+}
+
 /// Deletes (redacts) a message by eventId.
 @riverpod
 class DeleteMessage extends _$DeleteMessage {

lib/features/chat/presentation/chat_screen.dart

@@ -1,18 +1,23 @@
-// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 1.7.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // Full chat screen — timeline + input + typing indicators + read receipts
-// + long-press context menu (reply, react, copy, delete).
+// + long-press context menu (quick reactions, reply, react, copy, edit,
+// delete) + day separators + same-sender message grouping + room options.
 
 import 'package:emoji_picker_flutter/emoji_picker_flutter.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
-import 'package:matrix/matrix.dart' show MatrixFile;
+import 'package:intl/intl.dart';
+import 'package:matrix/matrix.dart' show MatrixFile, Room;
 
+import '../../../app/theme.dart';
 import '../../../core/network/matrix_client.dart';
 import '../../../shared/utils/matrix_id.dart';
 import '../../../shared/utils/mxc_url.dart';
 import '../../../shared/widgets/matrix_avatar.dart';
+import '../../rooms/presentation/user_search_dialog.dart';
+import '../data/chat_repository.dart';
 import '../domain/message_model.dart';
 import 'chat_controller.dart';
 import 'message_bubble.dart';
@@ -34,6 +39,14 @@ class _ChatScreenState extends ConsumerState<ChatScreen> {
 
   String get _decodedRoomId => Uri.decodeComponent(widget.roomId);
 
+  void _showRoomOptions(BuildContext context, Room room) {
+    showModalBottomSheet<void>(
+      context: context,
+      isScrollControlled: true,
+      builder: (_) => _RoomOptionsSheet(room: room),
+    );
+  }
+
   void _setReply(MessageModel message) {
     setState(() {
       _replyToEventId = message.eventId;
@@ -87,7 +100,9 @@ class _ChatScreenState extends ConsumerState<ChatScreen> {
           IconButton(
             icon: const Icon(Icons.more_vert),
             tooltip: 'Room options',
-            onPressed: () {},
+            onPressed: room != null
+                ? () => _showRoomOptions(context, room)
+                : null,
           ),
         ],
       ),
@@ -114,15 +129,82 @@ class _ChatScreenState extends ConsumerState<ChatScreen> {
 // Timeline
 // ---------------------------------------------------------------------------
 
-class _Timeline extends ConsumerWidget {
+class _Timeline extends ConsumerStatefulWidget {
   const _Timeline({required this.roomId, required this.onReply});
 
   final String roomId;
   final void Function(MessageModel) onReply;
 
   @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final timelineAsync = ref.watch(chatTimelineProvider(roomId));
+  ConsumerState<_Timeline> createState() => _TimelineState();
+}
+
+class _TimelineState extends ConsumerState<_Timeline> {
+  final _scrollController = ScrollController();
+
+  /// The list is reverse:true, so the newest message sits at offset 0.
+  /// Show the jump-to-latest button once the user scrolls up past this.
+  static const _showButtonThreshold = 400.0;
+
+  /// How close to the oldest (top of a reverse list) before we prefetch more.
+  static const _loadMoreThreshold = 400.0;
+
+  bool _showScrollToLatest = false;
+  bool _loadingMore = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController.addListener(_onScroll);
+  }
+
+  @override
+  void dispose() {
+    _scrollController.removeListener(_onScroll);
+    _scrollController.dispose();
+    super.dispose();
+  }
+
+  void _onScroll() {
+    if (!_scrollController.hasClients) return;
+    final pos = _scrollController.position;
+
+    final show = pos.pixels > _showButtonThreshold;
+    if (show != _showScrollToLatest) {
+      setState(() => _showScrollToLatest = show);
+    }
+
+    // Near the oldest end (top of a reverse list) → load older history.
+    if (pos.hasContentDimensions &&
+        pos.pixels >= pos.maxScrollExtent - _loadMoreThreshold) {
+      _loadOlder();
+    }
+  }
+
+  Future<void> _loadOlder() async {
+    if (_loadingMore) return;
+    final repo = ref.read(chatRepositoryProvider);
+    if (!repo.canLoadMore(widget.roomId)) return;
+    setState(() => _loadingMore = true);
+    try {
+      await repo.loadMoreMessages(widget.roomId);
+    } finally {
+      if (mounted) setState(() => _loadingMore = false);
+    }
+  }
+
+  void _scrollToLatest() {
+    if (!_scrollController.hasClients) return;
+    _scrollController.animateTo(
+      0,
+      duration: const Duration(milliseconds: 200),
+      curve: Curves.easeOut,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final timelineAsync = ref.watch(chatTimelineProvider(widget.roomId));
 
     return timelineAsync.when(
       loading: () => const Center(child: CircularProgressIndicator()),
@@ -144,24 +226,138 @@ class _Timeline extends ConsumerWidget {
           );
         }
 
-        return ListView.builder(
-          reverse: true,
-          padding: const EdgeInsets.symmetric(vertical: 8),
-          itemCount: messages.length,
-          itemBuilder: (context, index) {
-            final message = messages[index];
-            return _MessageWithGestures(
-              message: message,
-              roomId: roomId,
-              onReply: () => onReply(message),
-            );
-          },
+        return Stack(
+          children: [
+            ListView.builder(
+              controller: _scrollController,
+              reverse: true,
+              padding: const EdgeInsets.symmetric(vertical: 8),
+              itemCount: messages.length,
+              itemBuilder: (context, index) {
+                final message = messages[index];
+                // List is reverse:true, so the visually-older neighbour is at
+                // index+1 and the visually-newer neighbour is at index-1.
+                final older = index < messages.length - 1
+                    ? messages[index + 1]
+                    : null;
+                final newer = index > 0 ? messages[index - 1] : null;
+
+                const groupGap = Duration(minutes: 5);
+                final isFirstInGroup =
+                    older == null ||
+                    older.senderId != message.senderId ||
+                    message.timestamp.difference(older.timestamp) > groupGap;
+                final isLastInGroup =
+                    newer == null ||
+                    newer.senderId != message.senderId ||
+                    newer.timestamp.difference(message.timestamp) > groupGap;
+
+                // A day chip sits above the first message of each local day.
+                final showDay =
+                    older == null ||
+                    !_sameLocalDay(message.timestamp, older.timestamp);
+
+                final bubble = _MessageWithGestures(
+                  message: message,
+                  roomId: widget.roomId,
+                  onReply: () => widget.onReply(message),
+                  isFirstInGroup: isFirstInGroup,
+                  isLastInGroup: isLastInGroup,
+                );
+
+                if (!showDay) return bubble;
+                return Column(
+                  crossAxisAlignment: CrossAxisAlignment.stretch,
+                  children: [
+                    _DayChip(timestamp: message.timestamp),
+                    bubble,
+                  ],
+                );
+              },
+            ),
+            // Loading older history (top of a reverse list).
+            if (_loadingMore)
+              const Positioned(
+                top: 8,
+                left: 0,
+                right: 0,
+                child: Center(
+                  child: SizedBox(
+                    width: 22,
+                    height: 22,
+                    child: CircularProgressIndicator(strokeWidth: 2),
+                  ),
+                ),
+              ),
+            Positioned(
+              right: 12,
+              bottom: 12,
+              child: AnimatedScale(
+                duration: const Duration(milliseconds: 150),
+                scale: _showScrollToLatest ? 1 : 0,
+                child: FloatingActionButton.small(
+                  heroTag: 'scrollToLatest',
+                  onPressed: _scrollToLatest,
+                  tooltip: 'Jump to latest',
+                  child: const Icon(Icons.arrow_downward),
+                ),
+              ),
+            ),
+          ],
         );
       },
     );
   }
 }
 
+/// True when two timestamps fall on the same day in the local timezone.
+bool _sameLocalDay(DateTime a, DateTime b) {
+  final la = a.toLocal();
+  final lb = b.toLocal();
+  return la.year == lb.year && la.month == lb.month && la.day == lb.day;
+}
+
+/// Centred date pill shown above the first message of each local day.
+class _DayChip extends StatelessWidget {
+  const _DayChip({required this.timestamp});
+
+  final DateTime timestamp;
+
+  String _label() {
+    final now = DateTime.now().toLocal();
+    final local = timestamp.toLocal();
+    final today = DateTime(now.year, now.month, now.day);
+    final that = DateTime(local.year, local.month, local.day);
+    final diff = today.difference(that).inDays;
+    if (diff == 0) return 'Today';
+    if (diff == 1) return 'Yesterday';
+    if (local.year == now.year) return DateFormat('d MMM').format(local);
+    return DateFormat('d MMM yyyy').format(local);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return Center(
+      child: Container(
+        margin: const EdgeInsets.symmetric(vertical: 12),
+        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
+        decoration: BoxDecoration(
+          color: theme.colorScheme.surfaceContainerHighest,
+          borderRadius: BorderRadius.circular(12),
+        ),
+        child: Text(
+          _label(),
+          style: theme.textTheme.labelSmall?.copyWith(
+            color: M8Colours.subtleText,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+      ),
+    );
+  }
+}
+
 // ---------------------------------------------------------------------------
 // Long-press context menu
 // ---------------------------------------------------------------------------
@@ -171,17 +367,25 @@ class _MessageWithGestures extends ConsumerWidget {
     required this.message,
     required this.roomId,
     required this.onReply,
+    this.isFirstInGroup = true,
+    this.isLastInGroup = true,
   });
 
   final MessageModel message;
   final String roomId;
   final VoidCallback onReply;
+  final bool isFirstInGroup;
+  final bool isLastInGroup;
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     return GestureDetector(
       onLongPress: () => _showContextMenu(context, ref),
-      child: MessageBubble(message: message),
+      child: MessageBubble(
+        message: message,
+        isFirstInGroup: isFirstInGroup,
+        isLastInGroup: isLastInGroup,
+      ),
     );
   }
 
@@ -191,6 +395,12 @@ class _MessageWithGestures extends ConsumerWidget {
       builder: (_) => _MessageContextMenu(
         message: message,
         roomId: roomId,
+        onQuickReact: (emoji) {
+          Navigator.pop(context);
+          ref
+              .read(sendReactionProvider.notifier)
+              .react(roomId, message.eventId, emoji);
+        },
         onReply: () {
           Navigator.pop(context);
           onReply();
@@ -206,6 +416,12 @@ class _MessageWithGestures extends ConsumerWidget {
             context,
           ).showSnackBar(const SnackBar(content: Text('Message copied.')));
         },
+        onEdit: message.isMine && message.body != null
+            ? () {
+                Navigator.pop(context);
+                _showEditDialog(context, ref);
+              }
+            : null,
         onDelete: message.isMine
             ? () async {
                 Navigator.pop(context);
@@ -218,6 +434,44 @@ class _MessageWithGestures extends ConsumerWidget {
     );
   }
 
+  void _showEditDialog(BuildContext context, WidgetRef ref) {
+    final controller = TextEditingController(text: message.body ?? '');
+    showDialog<void>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('Edit message'),
+        content: TextField(
+          controller: controller,
+          autofocus: true,
+          maxLines: null,
+          decoration: const InputDecoration(border: OutlineInputBorder()),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(ctx).pop(),
+            child: const Text('Cancel'),
+          ),
+          FilledButton(
+            onPressed: () async {
+              final newText = controller.text.trim();
+              Navigator.of(ctx).pop();
+              if (newText.isEmpty || newText == message.body) return;
+              final error = await ref
+                  .read(editMessageProvider.notifier)
+                  .edit(roomId, message.eventId, newText);
+              if (error != null && context.mounted) {
+                ScaffoldMessenger.of(
+                  context,
+                ).showSnackBar(SnackBar(content: Text('Edit failed: $error')));
+              }
+            },
+            child: const Text('Save'),
+          ),
+        ],
+      ),
+    );
+  }
+
   void _showEmojiPicker(BuildContext context, WidgetRef ref) {
     showModalBottomSheet<void>(
       context: context,
@@ -239,21 +493,203 @@ class _MessageWithGestures extends ConsumerWidget {
   }
 }
 
+// ---------------------------------------------------------------------------
+// Room options sheet
+// ---------------------------------------------------------------------------
+
+class _RoomOptionsSheet extends ConsumerStatefulWidget {
+  const _RoomOptionsSheet({required this.room});
+  final Room room;
+
+  @override
+  ConsumerState<_RoomOptionsSheet> createState() => _RoomOptionsSheetState();
+}
+
+class _RoomOptionsSheetState extends ConsumerState<_RoomOptionsSheet> {
+  bool _leaving = false;
+
+  Future<void> _leaveRoom() async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (_) => AlertDialog(
+        title: const Text('Leave room?'),
+        content: Text(
+          'You will leave "${widget.room.getLocalizedDisplayname()}". '
+          'You can rejoin if you have an invite.',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(false),
+            child: const Text('Cancel'),
+          ),
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(true),
+            style: TextButton.styleFrom(
+              foregroundColor: Theme.of(context).colorScheme.error,
+            ),
+            child: const Text('Leave'),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed != true || !mounted) return;
+
+    setState(() => _leaving = true);
+    try {
+      await widget.room.leave();
+      if (mounted) {
+        Navigator.of(context).pop(); // close sheet
+        GoRouter.of(context).go('/rooms');
+      }
+    } on Exception catch (e) {
+      if (mounted) {
+        setState(() => _leaving = false);
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(SnackBar(content: Text('Could not leave room: $e')));
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final client = ref.watch(matrixClientProvider);
+    final theme = Theme.of(context);
+    final room = widget.room;
+    final members = room.getParticipants();
+    final canInvite = room.canInvite;
+
+    return SafeArea(
+      child: ConstrainedBox(
+        constraints: BoxConstraints(
+          maxHeight: MediaQuery.of(context).size.height * 0.75,
+        ),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            // Header
+            Padding(
+              padding: const EdgeInsets.fromLTRB(20, 16, 16, 4),
+              child: Row(
+                children: [
+                  Expanded(
+                    child: Text(
+                      room.getLocalizedDisplayname(),
+                      style: theme.textTheme.titleMedium?.copyWith(
+                        fontWeight: FontWeight.w600,
+                      ),
+                      overflow: TextOverflow.ellipsis,
+                    ),
+                  ),
+                  IconButton(
+                    icon: const Icon(Icons.close),
+                    onPressed: () => Navigator.of(context).pop(),
+                  ),
+                ],
+              ),
+            ),
+
+            // Members section
+            Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 4),
+              child: Text(
+                'Members (${members.length})',
+                style: theme.textTheme.labelMedium?.copyWith(
+                  color: theme.colorScheme.primary,
+                  fontWeight: FontWeight.w600,
+                ),
+              ),
+            ),
+            Flexible(
+              child: ListView.builder(
+                shrinkWrap: true,
+                itemCount: members.length,
+                itemBuilder: (context, index) {
+                  final member = members[index];
+                  final name = member.displayName ?? member.id.matrixLocalpart;
+                  final avatarUrl = resolveMxcUrl(client, member.avatarUrl);
+                  final isMe = member.id == client.userID;
+
+                  return ListTile(
+                    dense: true,
+                    leading: MatrixAvatar(
+                      name: name,
+                      avatarUrl: avatarUrl,
+                      radius: 16,
+                    ),
+                    title: Text(
+                      isMe ? '$name (you)' : name,
+                      style: theme.textTheme.bodyMedium,
+                    ),
+                    subtitle: Text(
+                      member.id,
+                      style: theme.textTheme.bodySmall?.copyWith(
+                        color: theme.colorScheme.onSurface.withAlpha(120),
+                      ),
+                    ),
+                  );
+                },
+              ),
+            ),
+
+            const Divider(),
+
+            // Actions
+            if (canInvite)
+              ListTile(
+                leading: const Icon(Icons.person_add_outlined),
+                title: const Text('Invite someone'),
+                onTap: () {
+                  Navigator.of(context).pop();
+                  showUserSearchDialog(context);
+                },
+              ),
+            ListTile(
+              leading: _leaving
+                  ? const SizedBox(
+                      width: 24,
+                      height: 24,
+                      child: CircularProgressIndicator(strokeWidth: 2),
+                    )
+                  : Icon(Icons.exit_to_app, color: theme.colorScheme.error),
+              title: Text(
+                'Leave room',
+                style: TextStyle(color: theme.colorScheme.error),
+              ),
+              enabled: !_leaving,
+              onTap: _leaveRoom,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
 class _MessageContextMenu extends StatelessWidget {
   const _MessageContextMenu({
     required this.message,
     required this.roomId,
+    required this.onQuickReact,
     required this.onReply,
     required this.onReact,
     required this.onCopy,
+    this.onEdit,
     this.onDelete,
   });
 
+  /// Six one-tap presets shown across the top of the menu.
+  static const _quickReactions = ['👍', '❤️', '😂', '😮', '😢', '🙏'];
+
   final MessageModel message;
   final String roomId;
+  final void Function(String emoji) onQuickReact;
   final VoidCallback onReply;
   final VoidCallback onReact;
   final VoidCallback onCopy;
+  final VoidCallback? onEdit;
   final VoidCallback? onDelete;
 
   @override
@@ -262,6 +698,43 @@ class _MessageContextMenu extends StatelessWidget {
       child: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
+          // Quick-reaction row: one-tap presets + open the full picker.
+          Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 8),
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                for (final emoji in _quickReactions)
+                  InkWell(
+                    borderRadius: BorderRadius.circular(22),
+                    onTap: () => onQuickReact(emoji),
+                    child: SizedBox(
+                      width: 44,
+                      height: 44,
+                      child: Center(
+                        child: Text(
+                          emoji,
+                          style: const TextStyle(fontSize: 24),
+                        ),
+                      ),
+                    ),
+                  ),
+                InkWell(
+                  borderRadius: BorderRadius.circular(22),
+                  onTap: onReact,
+                  child: SizedBox(
+                    width: 44,
+                    height: 44,
+                    child: Icon(
+                      Icons.add,
+                      color: Theme.of(context).colorScheme.onSurface,
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          ),
+          const Divider(height: 1),
           ListTile(
             leading: const Icon(Icons.reply),
             title: const Text('Reply'),
@@ -278,6 +751,12 @@ class _MessageContextMenu extends StatelessWidget {
               title: const Text('Copy text'),
               onTap: onCopy,
             ),
+          if (onEdit != null)
+            ListTile(
+              leading: const Icon(Icons.edit_outlined),
+              title: const Text('Edit'),
+              onTap: onEdit,
+            ),
           if (onDelete != null)
             ListTile(
               leading: const Icon(Icons.delete_outline, color: Colors.red),

lib/features/chat/presentation/message_bubble.dart

@@ -1,18 +1,30 @@
-// Version: 1.1.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 1.5.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // Message bubble widget. Handles text, images, files, redacted, replies.
 
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 
+import '../../../app/theme.dart';
 import '../../../shared/widgets/matrix_avatar.dart';
 import '../domain/message_model.dart';
 
 class MessageBubble extends StatelessWidget {
-  const MessageBubble({super.key, required this.message});
+  const MessageBubble({
+    super.key,
+    required this.message,
+    this.isFirstInGroup = true,
+    this.isLastInGroup = true,
+  });
 
   final MessageModel message;
 
+  /// First message of a same-sender run: show the sender name, add top space.
+  final bool isFirstInGroup;
+
+  /// Last message of a same-sender run: show the avatar, keep the tail corner.
+  final bool isLastInGroup;
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
@@ -20,8 +32,8 @@ class MessageBubble extends StatelessWidget {
 
     return Padding(
       padding: EdgeInsets.only(
-        top: 2,
-        bottom: 2,
+        top: isFirstInGroup ? 8 : 1,
+        bottom: isLastInGroup ? 2 : 1,
         left: isMine ? 48 : 8,
         right: isMine ? 8 : 48,
       ),
@@ -32,11 +44,16 @@ class MessageBubble extends StatelessWidget {
             : MainAxisAlignment.start,
         children: [
           if (!isMine) ...[
-            MatrixAvatar(
-              name: message.senderDisplayName,
-              avatarUrl: message.senderAvatarUrl,
-              radius: 16,
-            ),
+            // Only the last message of a run carries the avatar; earlier ones
+            // hold the gutter so the column stays aligned.
+            if (isLastInGroup)
+              MatrixAvatar(
+                name: message.senderDisplayName,
+                avatarUrl: message.senderAvatarUrl,
+                radius: 16,
+              )
+            else
+              const SizedBox(width: 32),
             const SizedBox(width: 8),
           ],
           Flexible(
@@ -45,7 +62,7 @@ class MessageBubble extends StatelessWidget {
                   ? CrossAxisAlignment.end
                   : CrossAxisAlignment.start,
               children: [
-                if (!isMine)
+                if (!isMine && isFirstInGroup)
                   Padding(
                     padding: const EdgeInsets.only(left: 4, bottom: 2),
                     child: Text(
@@ -56,7 +73,11 @@ class MessageBubble extends StatelessWidget {
                       ),
                     ),
                   ),
-                _BubbleContent(message: message, isMine: isMine),
+                _BubbleContent(
+                  message: message,
+                  isMine: isMine,
+                  isLastInGroup: isLastInGroup,
+                ),
                 if (message.reactions.isNotEmpty)
                   _ReactionsRow(reactions: message.reactions),
               ],
@@ -69,29 +90,46 @@ class MessageBubble extends StatelessWidget {
 }
 
 class _BubbleContent extends StatelessWidget {
-  const _BubbleContent({required this.message, required this.isMine});
+  const _BubbleContent({
+    required this.message,
+    required this.isMine,
+    this.isLastInGroup = true,
+  });
 
   final MessageModel message;
   final bool isMine;
+  final bool isLastInGroup;
 
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
 
     final bgColour = isMine
-        ? theme.colorScheme.primary
-        : theme.colorScheme.surfaceContainerHighest;
+        ? M8Colours.selfBubble
+        : M8Colours.darkSurfaceVariant;
     final textColour = isMine ? Colors.white : theme.colorScheme.onSurface;
+    final maxBubbleWidth =
+        (MediaQuery.sizeOf(context).width.clamp(0, 560) * 0.78).toDouble();
+    // Only the last bubble of a same-sender run gets the pointed tail corner;
+    // mid-run bubbles stay fully rounded so the run reads as one block.
+    final tail = isLastInGroup ? const Radius.circular(4) : null;
 
     return Container(
-      constraints: const BoxConstraints(maxWidth: 320),
+      constraints: BoxConstraints(maxWidth: maxBubbleWidth),
       decoration: BoxDecoration(
         color: bgColour,
+        border: isMine
+            ? null
+            : Border.all(color: theme.colorScheme.outline.withAlpha(31)),
         borderRadius: BorderRadius.only(
           topLeft: const Radius.circular(16),
           topRight: const Radius.circular(16),
-          bottomLeft: Radius.circular(isMine ? 16 : 4),
-          bottomRight: Radius.circular(isMine ? 4 : 16),
+          bottomLeft: isMine
+              ? const Radius.circular(16)
+              : (tail ?? const Radius.circular(16)),
+          bottomRight: isMine
+              ? (tail ?? const Radius.circular(16))
+              : const Radius.circular(16),
         ),
       ),
       child: Padding(
@@ -138,6 +176,22 @@ class _MessageContentBody extends StatelessWidget {
           fontStyle: FontStyle.italic,
         ),
       ),
+      MessageType.encrypted => Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(Icons.lock_outline, size: 14, color: textColour.withAlpha(153)),
+          const SizedBox(width: 6),
+          Flexible(
+            child: Text(
+              'Encrypted. Use Element to read',
+              style: TextStyle(
+                color: textColour.withAlpha(153),
+                fontStyle: FontStyle.italic,
+              ),
+            ),
+          ),
+        ],
+      ),
       _ => Text(
         message.body ?? 'Unsupported message type',
         style: TextStyle(
@@ -156,11 +210,15 @@ class _ImageContent extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    if (message.mediaUrl != null) {
-      return ClipRRect(
+    final url = message.mediaUrl;
+    if (url == null) return const Icon(Icons.image_not_supported);
+
+    return GestureDetector(
+      onTap: () => _openFullscreen(context, url, message.body),
+      child: ClipRRect(
         borderRadius: BorderRadius.circular(8),
         child: CachedNetworkImage(
-          imageUrl: message.mediaUrl!,
+          imageUrl: url,
           width: 240,
           fit: BoxFit.cover,
           placeholder: (_, __) => const SizedBox(
@@ -172,9 +230,56 @@ class _ImageContent extends StatelessWidget {
             child: Center(child: Icon(Icons.broken_image)),
           ),
         ),
-      );
-    }
-    return const Icon(Icons.image_not_supported);
+      ),
+    );
+  }
+
+  void _openFullscreen(BuildContext context, String url, String? caption) {
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        fullscreenDialog: true,
+        builder: (_) => _ImageViewer(url: url, caption: caption),
+      ),
+    );
+  }
+}
+
+class _ImageViewer extends StatelessWidget {
+  const _ImageViewer({required this.url, this.caption});
+
+  final String url;
+  final String? caption;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: Colors.black,
+      appBar: AppBar(
+        backgroundColor: Colors.black,
+        foregroundColor: Colors.white,
+        title: caption != null
+            ? Text(
+                caption!,
+                style: const TextStyle(fontSize: 14),
+                overflow: TextOverflow.ellipsis,
+              )
+            : null,
+      ),
+      body: Center(
+        child: InteractiveViewer(
+          minScale: 0.5,
+          maxScale: 4,
+          child: CachedNetworkImage(
+            imageUrl: url,
+            fit: BoxFit.contain,
+            placeholder: (_, __) =>
+                const CircularProgressIndicator(color: Colors.white),
+            errorWidget: (_, __, ___) =>
+                const Icon(Icons.broken_image, color: Colors.white, size: 64),
+          ),
+        ),
+      ),
+    );
   }
 }
 

lib/features/chat/presentation/message_input.dart

@@ -1,4 +1,4 @@
-// Version: 1.1.0 | Created: 2026-04-01
+// Version: 1.1.1 | Created: 2026-04-01 | Updated: 2026-07-04
 // Message input bar — text, send, attach file, reply quote.
 // File picker enabled in Phase 2 via file_picker ^8.0.0.
 
@@ -195,7 +195,8 @@ class _MessageInputState extends State<MessageInput> {
                       ),
                       textInputAction: TextInputAction.send,
                       onSubmitted: (_) => _submit(),
-                      maxLines: null,
+                      minLines: 1,
+                      maxLines: 6,
                       keyboardType: TextInputType.multiline,
                     ),
                   ),

lib/features/help/presentation/help_tab.dart

@@ -0,0 +1,332 @@
+// Version: 1.1.1 | Created: 2026-04-11 | Updated: 2026-07-03
+// Help tab with in-app guidance for common tasks and troubleshooting.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:web/web.dart' as web;
+
+import '../../../core/network/matrix_client.dart';
+import '../../profile/presentation/security_setup_dialog.dart';
+
+void _launchUrl(BuildContext context, String url) {
+  web.window.open(url, '_blank');
+}
+
+class HelpTab extends ConsumerWidget {
+  const HelpTab({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final theme = Theme.of(context);
+    final client = ref.watch(matrixClientProvider);
+
+    return ListView(
+      padding: const EdgeInsets.all(16),
+      children: [
+        Padding(
+          padding: const EdgeInsets.only(bottom: 16),
+          child: Text(
+            'Help & Troubleshooting',
+            style: theme.textTheme.headlineSmall?.copyWith(
+              fontWeight: FontWeight.bold,
+            ),
+          ),
+        ),
+
+        // --- Encrypted messages ---
+        _HelpCard(
+          icon: Icons.lock_outline,
+          title: 'I see "Encrypted. Use Element to read"',
+          children: [
+            const _HelpParagraph(
+              'This means your device does not have the keys needed to '
+              'read those messages. This happens when:',
+            ),
+            const _HelpBullet(
+                'You are using M8Chat on a new device or browser.'),
+            const _HelpBullet(
+                'The messages were sent before you set up security.'),
+            const _HelpBullet(
+                'Your browser data was cleared.'),
+            const SizedBox(height: 12),
+            const _HelpSubheading('How to fix it'),
+            const _HelpParagraph(
+              '1. Go to the Profile tab.\n'
+              '2. Tap Security & Privacy to expand it.\n'
+              '3. Tap Security setup.\n'
+              '4. If you have set up security before, enter your '
+              'recovery key. If not, a new one will be created for you.\n'
+              '5. Save the recovery key somewhere safe.\n'
+              '6. After setup, go back to your rooms. Messages should '
+              'now be readable.',
+            ),
+            const SizedBox(height: 12),
+            const _HelpSubheading('What is a recovery key?'),
+            const _HelpParagraph(
+              'A recovery key is a long code starting with "EsTc" that '
+              'unlocks your encrypted messages. It was shown to you when '
+              'you first set up security in Element or M8Chat. If you '
+              'saved it, you can use it to restore your messages on any '
+              'device.',
+            ),
+            const SizedBox(height: 12),
+            Builder(
+              builder: (context) => OutlinedButton.icon(
+                onPressed: () =>
+                    showSecuritySetupDialog(context, client),
+                icon: const Icon(Icons.shield_outlined),
+                label: const Text('Open Security Setup'),
+              ),
+            ),
+          ],
+        ),
+
+        // --- New to M8Chat ---
+        const _HelpCard(
+          icon: Icons.chat_bubble_outline,
+          title: 'Getting started with M8Chat',
+          children: [
+            _HelpParagraph(
+              'M8Chat is a secure messaging app built on the Matrix '
+              'protocol. All your messages are end-to-end encrypted, '
+              'meaning only you and the people you chat with can read '
+              'them.',
+            ),
+            SizedBox(height: 12),
+            _HelpSubheading('First steps'),
+            _HelpParagraph(
+              '1. Set up security: go to Profile > Security & Privacy '
+              '> Security setup. This creates your encryption keys and '
+              'backs them up.\n'
+              '2. Save your recovery key. You will need it if you ever '
+              'log in on a new device.\n'
+              '3. Start chatting. Tap the pencil icon at the top right '
+              'to search for users and start a conversation.',
+            ),
+          ],
+        ),
+
+        // --- Joining a conference ---
+        const _HelpCard(
+          icon: Icons.videocam_outlined,
+          title: 'Joining a video conference',
+          children: [
+            _HelpParagraph(
+              'M8Chat supports Jitsi video conferences. To join one:',
+            ),
+            SizedBox(height: 8),
+            _HelpParagraph(
+              '1. Tap the Conference tab at the bottom.\n'
+              '2. Paste the meeting link (e.g. conf.m8chat.au/MyMeeting).\n'
+              '3. Tap Join Meeting.\n\n'
+              'You can also make voice and video calls directly from any '
+              'chat room using the phone and camera icons at the top of '
+              'the conversation.',
+            ),
+          ],
+        ),
+
+        // --- Video call issues ---
+        const _HelpCard(
+          icon: Icons.videocam_off_outlined,
+          title: 'Video call problems',
+          children: [
+            _HelpSubheading('Scrambled or black video'),
+            _HelpParagraph(
+              'If video appears scrambled when calling someone on Element X, '
+              'this is an encryption compatibility issue that is being '
+              'worked on. Try calling from the same app on both ends.',
+            ),
+            SizedBox(height: 8),
+            _HelpSubheading('No audio or robotic sound'),
+            _HelpParagraph(
+              'This is usually caused by browser permissions. Make sure '
+              'you have allowed microphone and camera access when '
+              'prompted. On some devices (especially Sailfish OS), the '
+              'audio codec support may be limited.',
+            ),
+          ],
+        ),
+
+        // --- Account & privacy ---
+        const _HelpCard(
+          icon: Icons.security_outlined,
+          title: 'Account & privacy',
+          children: [
+            _HelpSubheading('Who can read my messages?'),
+            _HelpParagraph(
+              'Only you and the people in the conversation. M8Chat uses '
+              'end-to-end encryption. Not even the server operator can '
+              'read your messages.',
+            ),
+            SizedBox(height: 8),
+            _HelpSubheading('Can I use multiple devices?'),
+            _HelpParagraph(
+              'Yes. Set up security on each device using the same '
+              'recovery key. Your messages will be available on all '
+              'devices where security is set up.',
+            ),
+            SizedBox(height: 8),
+            _HelpSubheading('What happens if I lose my recovery key?'),
+            _HelpParagraph(
+              'You will not be able to read old messages on new devices. '
+              'New messages will still work. You can create a new '
+              'recovery key from the Security setup, but old messages '
+              'encrypted with the previous key will remain unreadable.',
+            ),
+          ],
+        ),
+
+        // --- Account management ---
+        _HelpCard(
+          icon: Icons.manage_accounts_outlined,
+          title: 'Account management',
+          children: [
+            const _HelpParagraph(
+              'All account changes need to be made through the M8Chat '
+              'website. This includes:',
+            ),
+            const _HelpBullet('Changing your password'),
+            const _HelpBullet('Membership settings and billing'),
+            const _HelpBullet('Updating your profile or email'),
+            const _HelpBullet('Deleting your account'),
+            const SizedBox(height: 12),
+            Builder(
+              builder: (context) => OutlinedButton.icon(
+                onPressed: () => _launchUrl(context, 'https://m8chat.au'),
+                icon: const Icon(Icons.open_in_new),
+                label: const Text('Go to m8chat.au'),
+              ),
+            ),
+            const SizedBox(height: 12),
+            const _HelpSubheading('Privacy'),
+            const _HelpParagraph(
+              'No account details or other privacy or user identifiers '
+              'are saved or stored on this application. All data stays '
+              'on the M8Chat server and is protected by end-to-end '
+              'encryption.',
+            ),
+            const SizedBox(height: 12),
+            const _HelpParagraph(
+              'For more information about what happens if things go '
+              'wrong, including data recovery and account issues:',
+            ),
+            const SizedBox(height: 8),
+            Builder(
+              builder: (context) => OutlinedButton.icon(
+                onPressed: () => _launchUrl(
+                    context, 'https://m8chat.au/when-it-all-goes-wrong/'),
+                icon: const Icon(Icons.open_in_new),
+                label: const Text('When it all goes wrong'),
+              ),
+            ),
+          ],
+        ),
+
+        const SizedBox(height: 32),
+        Center(
+          child: Text(
+            'Need more help? Visit m8chat.au or contact the M8Chat team.',
+            style: theme.textTheme.bodySmall?.copyWith(
+              color: theme.colorScheme.onSurface.withAlpha(102),
+            ),
+          ),
+        ),
+        const SizedBox(height: 16),
+      ],
+    );
+  }
+}
+
+// --- Reusable help widgets ---
+
+class _HelpCard extends StatelessWidget {
+  const _HelpCard({
+    required this.icon,
+    required this.title,
+    required this.children,
+  });
+
+  final IconData icon;
+  final String title;
+  final List<Widget> children;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return Card(
+      margin: const EdgeInsets.only(bottom: 12),
+      child: ExpansionTile(
+        leading: Icon(icon, color: theme.colorScheme.primary),
+        title: Text(
+          title,
+          style: theme.textTheme.titleSmall?.copyWith(
+            fontWeight: FontWeight.w600,
+          ),
+        ),
+        childrenPadding:
+            const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
+        expandedCrossAxisAlignment: CrossAxisAlignment.start,
+        children: children,
+      ),
+    );
+  }
+}
+
+class _HelpParagraph extends StatelessWidget {
+  const _HelpParagraph(this.text);
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      text,
+      style: Theme.of(context).textTheme.bodyMedium?.copyWith(height: 1.5),
+    );
+  }
+}
+
+class _HelpSubheading extends StatelessWidget {
+  const _HelpSubheading(this.text);
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 4),
+      child: Text(
+        text,
+        style: Theme.of(context).textTheme.titleSmall?.copyWith(
+              fontWeight: FontWeight.w600,
+            ),
+      ),
+    );
+  }
+}
+
+class _HelpBullet extends StatelessWidget {
+  const _HelpBullet(this.text);
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.only(left: 8, top: 4),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Text('\u2022  '),
+          Expanded(
+            child: Text(
+              text,
+              style: Theme.of(context)
+                  .textTheme
+                  .bodyMedium
+                  ?.copyWith(height: 1.5),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/features/jitsi/data/jitsi_web_service.dart

@@ -0,0 +1,198 @@
+// Version: 1.2.0 | Created: 2026-04-05 | Updated: 2026-07-04
+// Web implementation: uses JitsiMeetExternalAPI via dart:js_interop.
+// This file is web-only — guarded by the Flutter web build.
+// The external_api.js script is lazy-loaded on first use — not in index.html.
+// This prevents privacy browsers (Brave, Mullvad) from blocking the app
+// at startup due to a cross-origin script from conf.m8chat.au.
+
+import 'dart:async';
+import 'dart:js_interop';
+import 'dart:js_interop_unsafe';
+import 'dart:ui_web' as ui_web;
+
+import 'package:web/web.dart' as web;
+
+import '../../../core/config/app_config.dart';
+
+/// Manages a single Jitsi iframe session via the JitsiMeetExternalAPI.
+class JitsiWebService {
+  JitsiWebService._();
+  static final instance = JitsiWebService._();
+
+  JSObject? _api;
+  bool _viewRegistered = false;
+  bool _scriptLoaded = false;
+  bool _scriptLoading = false;
+
+  /// Unique view type for HtmlElementView.
+  static const String viewType = 'jitsi-meet-container';
+
+  /// Lazy-loads the JitsiMeetExternalAPI script from conf.m8chat.au.
+  /// Returns true if the script loaded successfully, false otherwise.
+  Future<bool> _ensureScriptLoaded() async {
+    if (_scriptLoaded) return true;
+    if (_scriptLoading) {
+      // Wait for in-flight load to finish.
+      for (var i = 0; i < 50; i++) {
+        await Future<void>.delayed(const Duration(milliseconds: 100));
+        if (_scriptLoaded) return true;
+      }
+      return false;
+    }
+    _scriptLoading = true;
+
+    final completer = Completer<bool>();
+    final script =
+        web.document.createElement('script') as web.HTMLScriptElement;
+    script.src = 'https://${AppConfig.jitsiDomain}/external_api.js';
+    script.async = true;
+    script.onload = (web.Event event) {
+      _scriptLoaded = true;
+      _scriptLoading = false;
+      completer.complete(true);
+    }.toJS;
+    script.onerror = (web.Event event) {
+      _scriptLoading = false;
+      completer.complete(false);
+    }.toJS;
+    web.document.head?.append(script);
+
+    return completer.future;
+  }
+
+  /// Registers the platform view factory (once).
+  void ensureViewRegistered() {
+    if (_viewRegistered) return;
+    ui_web.platformViewRegistry.registerViewFactory(
+      viewType,
+      (int viewId, {Object? params}) {
+        final div = web.document.createElement('div') as web.HTMLDivElement;
+        div.id = 'jitsi-container-$viewId';
+        div.style
+          ..width = '100%'
+          ..height = '100%';
+        return div;
+      },
+    );
+    _viewRegistered = true;
+  }
+
+  /// Starts a Jitsi meeting inside the container div created by the platform view.
+  /// Call this AFTER the HtmlElementView has been scheduled for mounting
+  /// (e.g. in a post-frame callback). Lazy-loads the Jitsi script on first
+  /// call and waits for the platform-view container div to appear — the
+  /// post-frame callback can run before the HtmlElementView factory has
+  /// inserted the div, which previously made this method bail out silently
+  /// and leave the meeting screen blank.
+  /// Returns true if the meeting iframe was created.
+  Future<bool> joinMeeting({
+    required String roomName,
+    String? jwt,
+    String? displayName,
+    String? avatarUrl,
+    void Function()? onReadyToClose,
+  }) async {
+    dispose(); // tear down any previous meeting
+
+    // Lazy-load the external_api.js script if not already present.
+    final loaded = await _ensureScriptLoaded();
+    if (!loaded) {
+      web.console.warn('[Jitsi] external_api.js failed to load'.toJS);
+      return false;
+    }
+
+    // Wait for the container div — the platform view may not be in the DOM
+    // yet when the post-frame callback fires.
+    web.Node? parentNode;
+    for (var i = 0; i < 50; i++) {
+      final containers =
+          web.document.querySelectorAll('[id^="jitsi-container-"]');
+      if (containers.length > 0) {
+        parentNode = containers.item(containers.length - 1);
+        break;
+      }
+      await Future<void>.delayed(const Duration(milliseconds: 100));
+    }
+    if (parentNode == null) {
+      web.console.warn('[Jitsi] container div never appeared'.toJS);
+      return false;
+    }
+
+    // Build the options as a real JS object. Passing a DOM node through
+    // Map.jsify() is not supported and threw at runtime in the dart2js build.
+    final configOverwrite = JSObject()
+      ..setProperty('startAudioMuted'.toJS, 0.toJS)
+      ..setProperty('startVideoMuted'.toJS, 0.toJS)
+      ..setProperty('disableDeepLinking'.toJS, true.toJS)
+      ..setProperty('prejoinPageEnabled'.toJS, true.toJS);
+
+    final interfaceConfigOverwrite = JSObject()
+      ..setProperty('SHOW_CHROME_EXTENSION_BANNER'.toJS, false.toJS);
+
+    final options = JSObject()
+      ..setProperty('roomName'.toJS, roomName.toJS)
+      ..setProperty('parentNode'.toJS, parentNode as JSAny)
+      ..setProperty('width'.toJS, '100%'.toJS)
+      ..setProperty('height'.toJS, '100%'.toJS)
+      ..setProperty('configOverwrite'.toJS, configOverwrite)
+      ..setProperty('interfaceConfigOverwrite'.toJS, interfaceConfigOverwrite);
+
+    if (jwt != null && jwt.isNotEmpty) {
+      options.setProperty('jwt'.toJS, jwt.toJS);
+    }
+
+    if (displayName != null && displayName.isNotEmpty) {
+      final userInfo = JSObject()
+        ..setProperty('displayName'.toJS, displayName.toJS);
+      if (avatarUrl != null) {
+        userInfo.setProperty('avatarUrl'.toJS, avatarUrl.toJS);
+      }
+      options.setProperty('userInfo'.toJS, userInfo);
+    }
+
+    try {
+      _api = _createJitsiApi(AppConfig.jitsiDomain.toJS, options);
+    } catch (e) {
+      web.console.error('[Jitsi] JitsiMeetExternalAPI threw: $e'.toJS);
+      return false;
+    }
+
+    if (onReadyToClose != null && _api != null) {
+      _addEventListener(_api!, 'readyToClose'.toJS, () {
+        onReadyToClose();
+      }.toJS);
+    }
+    return true;
+  }
+
+  /// Cleans up the Jitsi iframe.
+  void dispose() {
+    if (_api != null) {
+      _disposeApi(_api!);
+      _api = null;
+    }
+  }
+}
+
+/// Binding for the JitsiMeetExternalAPI ES6 class.
+/// The external constructor compiles to `new JitsiMeetExternalAPI(...)`.
+/// (A plain external function binding calls it WITHOUT `new`, which throws
+/// "Class constructor cannot be invoked without 'new'" — the original cause
+/// of the blank meeting screen.)
+@JS('JitsiMeetExternalAPI')
+extension type _JitsiApi._(JSObject _) implements JSObject {
+  external _JitsiApi(JSString domain, JSObject options);
+  external void addEventListener(JSString event, JSFunction callback);
+  external void dispose();
+}
+
+JSObject _createJitsiApi(JSString domain, JSObject options) =>
+    _JitsiApi(domain, options);
+
+void _addEventListener(JSObject api, JSString event, JSFunction callback) {
+  (api as _JitsiApi).addEventListener(event, callback);
+}
+
+void _disposeApi(JSObject api) {
+  (api as _JitsiApi).dispose();
+}

lib/features/jitsi/domain/jitsi_link.dart

@@ -0,0 +1,43 @@
+// Version: 1.0.0 | Created: 2026-04-05
+// Parses a Jitsi meeting link into room name and optional JWT.
+
+/// Parsed Jitsi meeting link.
+class JitsiLink {
+  const JitsiLink({required this.roomName, this.jwt});
+
+  final String roomName;
+  final String? jwt;
+
+  /// Parses a Jitsi link in common formats:
+  /// - `https://conf.m8chat.au/RoomName`
+  /// - `https://conf.m8chat.au/RoomName?jwt=abc123`
+  /// - `conf.m8chat.au/RoomName?jwt=abc123`
+  /// - `RoomName` (bare room name)
+  static JitsiLink? tryParse(String input) {
+    final trimmed = input.trim();
+    if (trimmed.isEmpty) return null;
+
+    // Try as a URL first.
+    var uriString = trimmed;
+    if (!uriString.contains('://') && uriString.contains('/')) {
+      uriString = 'https://$uriString';
+    }
+
+    final uri = Uri.tryParse(uriString);
+    if (uri != null && uri.pathSegments.isNotEmpty && uri.host.isNotEmpty) {
+      final roomName = uri.pathSegments
+          .where((s) => s.isNotEmpty)
+          .join('/');
+      if (roomName.isEmpty) return null;
+      final jwt = uri.queryParameters['jwt'];
+      return JitsiLink(roomName: roomName, jwt: jwt);
+    }
+
+    // Bare room name — no slashes, no protocol.
+    if (!trimmed.contains('/') && !trimmed.contains(' ')) {
+      return JitsiLink(roomName: trimmed);
+    }
+
+    return null;
+  }
+}

lib/features/jitsi/presentation/conference_tab.dart

@@ -0,0 +1,96 @@
+// Version: 1.0.0 | Created: 2026-04-10
+// Embedded conference join widget for the bottom nav tab.
+
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+/// Inline widget shown inside the RoomsScreen bottom nav.
+/// Lets authenticated users paste a Jitsi meeting link and join.
+class ConferenceTab extends StatefulWidget {
+  const ConferenceTab({super.key});
+
+  @override
+  State<ConferenceTab> createState() => _ConferenceTabState();
+}
+
+class _ConferenceTabState extends State<ConferenceTab> {
+  final _linkController = TextEditingController();
+
+  @override
+  void dispose() {
+    _linkController.dispose();
+    super.dispose();
+  }
+
+  void _joinConference() {
+    final link = _linkController.text.trim();
+    if (link.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Please paste a meeting link.')),
+      );
+      return;
+    }
+    context.push('/jitsi', extra: link);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Center(
+      child: SingleChildScrollView(
+        padding: const EdgeInsets.symmetric(horizontal: 32, vertical: 24),
+        child: ConstrainedBox(
+          constraints: const BoxConstraints(maxWidth: 440),
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Icon(
+                Icons.videocam_outlined,
+                size: 64,
+                color: theme.colorScheme.primary.withAlpha(180),
+              ),
+              const SizedBox(height: 16),
+              Text(
+                'Join a Conference',
+                style: theme.textTheme.titleLarge?.copyWith(
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+              const SizedBox(height: 8),
+              Text(
+                'Paste your meeting link below to join.',
+                style: theme.textTheme.bodyMedium?.copyWith(
+                  color: theme.colorScheme.onSurface.withAlpha(153),
+                ),
+              ),
+              const SizedBox(height: 32),
+              TextField(
+                controller: _linkController,
+                decoration: const InputDecoration(
+                  hintText: 'conf.m8chat.au/YourMeeting',
+                  prefixIcon: Icon(Icons.link),
+                  border: OutlineInputBorder(),
+                ),
+                textInputAction: TextInputAction.go,
+                onSubmitted: (_) => _joinConference(),
+              ),
+              const SizedBox(height: 16),
+              SizedBox(
+                width: double.infinity,
+                child: ElevatedButton.icon(
+                  onPressed: _joinConference,
+                  icon: const Icon(Icons.videocam),
+                  label: const Text('Join Meeting'),
+                  style: ElevatedButton.styleFrom(
+                    minimumSize: const Size.fromHeight(52),
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/jitsi/presentation/jitsi_screen.dart

@@ -0,0 +1,154 @@
+// Version: 1.3.0 | Created: 2026-04-05 | Updated: 2026-07-04
+// Full-screen Jitsi meeting embedded via HtmlElementView (web platform view).
+
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+import '../data/jitsi_web_service.dart';
+import '../domain/jitsi_link.dart';
+
+class JitsiScreen extends StatefulWidget {
+  const JitsiScreen({super.key, required this.meetingUrl});
+
+  /// The raw meeting link or room name provided by the user.
+  final String meetingUrl;
+
+  @override
+  State<JitsiScreen> createState() => _JitsiScreenState();
+}
+
+class _JitsiScreenState extends State<JitsiScreen> {
+  late final JitsiLink? _link;
+  bool _meetingStarted = false;
+  bool _meetingEnded = false;
+  bool _meetingFailed = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _link = JitsiLink.tryParse(widget.meetingUrl);
+    if (_link != null) {
+      JitsiWebService.instance.ensureViewRegistered();
+    }
+  }
+
+  @override
+  void dispose() {
+    JitsiWebService.instance.dispose();
+    super.dispose();
+  }
+
+  void _startMeeting() {
+    if (_link == null || _meetingStarted) return;
+    _meetingStarted = true;
+
+    // Post-frame so the HtmlElementView div is mounted in the DOM.
+    // joinMeeting itself waits for the container div to appear.
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      final ok = await JitsiWebService.instance.joinMeeting(
+        roomName: _link.roomName,
+        jwt: _link.jwt,
+        onReadyToClose: () {
+          if (mounted) {
+            setState(() => _meetingEnded = true);
+          }
+        },
+      );
+      if (!ok && mounted) {
+        setState(() => _meetingFailed = true);
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_link == null) {
+      return Scaffold(
+        appBar: AppBar(title: const Text('Conference')),
+        body: Center(
+          child: Padding(
+            padding: const EdgeInsets.all(32),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const Icon(Icons.link_off, size: 48),
+                const SizedBox(height: 16),
+                const Text('Could not parse the meeting link.'),
+                const SizedBox(height: 24),
+                ElevatedButton(
+                  onPressed: () => context.go('/rooms'),
+                  child: const Text('Back'),
+                ),
+              ],
+            ),
+          ),
+        ),
+      );
+    }
+
+    if (_meetingEnded) {
+      return Scaffold(
+        body: Center(
+          child: Padding(
+            padding: const EdgeInsets.all(32),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                Icon(
+                  Icons.videocam_off_outlined,
+                  size: 64,
+                  color: Theme.of(context).colorScheme.primary,
+                ),
+                const SizedBox(height: 16),
+                Text(
+                  'Meeting ended',
+                  style: Theme.of(context).textTheme.headlineSmall,
+                ),
+                const SizedBox(height: 24),
+                ElevatedButton(
+                  onPressed: () => context.go('/rooms'),
+                  child: const Text('Back to M8Chat'),
+                ),
+              ],
+            ),
+          ),
+        ),
+      );
+    }
+
+    if (_meetingFailed) {
+      return Scaffold(
+        appBar: AppBar(title: const Text('Conference')),
+        body: Center(
+          child: Padding(
+            padding: const EdgeInsets.all(32),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const Icon(Icons.videocam_off_outlined, size: 48),
+                const SizedBox(height: 16),
+                const Text(
+                  'Could not start the meeting. '
+                  'Check your connection and try again.',
+                  textAlign: TextAlign.center,
+                ),
+                const SizedBox(height: 24),
+                ElevatedButton(
+                  onPressed: () => context.go('/rooms'),
+                  child: const Text('Back'),
+                ),
+              ],
+            ),
+          ),
+        ),
+      );
+    }
+
+    // Render the Jitsi iframe and kick off the meeting once mounted.
+    _startMeeting();
+
+    return Scaffold(
+      body: const HtmlElementView(viewType: JitsiWebService.viewType),
+    );
+  }
+}

lib/features/jitsi/presentation/welcome_screen.dart

@@ -0,0 +1,227 @@
+// Version: 1.1.0 | Created: 2026-04-05 | Updated: 2026-07-04
+// Welcome/landing screen — first thing unauthenticated users see.
+// Two paths: join a Jitsi conference (no login) or sign in for Matrix chat.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+import 'package:go_router/go_router.dart';
+
+class WelcomeScreen extends StatefulWidget {
+  const WelcomeScreen({super.key});
+
+  @override
+  State<WelcomeScreen> createState() => _WelcomeScreenState();
+}
+
+class _WelcomeScreenState extends State<WelcomeScreen> {
+  final _linkController = TextEditingController();
+
+  @override
+  void dispose() {
+    _linkController.dispose();
+    super.dispose();
+  }
+
+  void _joinConference() {
+    final link = _linkController.text.trim();
+    if (link.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Please paste a meeting link.')),
+      );
+      return;
+    }
+    context.go('/jitsi', extra: link);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Scaffold(
+      body: DecoratedBox(
+        decoration: const BoxDecoration(
+          gradient: LinearGradient(
+            begin: Alignment.topCenter,
+            end: Alignment.bottomCenter,
+            colors: [Color(0xFF0A0F2E), Color(0xFF131A42)],
+          ),
+        ),
+        child: SafeArea(
+        child: Center(
+          child: SingleChildScrollView(
+            padding: const EdgeInsets.symmetric(horizontal: 32, vertical: 24),
+            child: ConstrainedBox(
+              constraints: const BoxConstraints(maxWidth: 440),
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+                  // --- Logo & tagline ---
+                  Column(
+                    children: [
+                      SvgPicture.asset(
+                        'assets/images/m8logo.svg',
+                        width: 80,
+                        height: 80,
+                      ),
+                      const SizedBox(height: 16),
+                      Text(
+                        'M8Chat',
+                        style: theme.textTheme.headlineMedium?.copyWith(
+                          fontWeight: FontWeight.bold,
+                          color: theme.colorScheme.primary,
+                        ),
+                      ),
+                      const SizedBox(height: 8),
+                      Text(
+                        'Chat and conference, all in one place',
+                        textAlign: TextAlign.center,
+                        style: theme.textTheme.bodyMedium?.copyWith(
+                          color: theme.colorScheme.onSurface.withAlpha(153),
+                        ),
+                      ),
+                    ],
+                  ),
+
+                  const SizedBox(height: 48),
+
+                  // --- Conference section ---
+                  _SectionCard(
+                    theme: theme,
+                    isDark: isDark,
+                    icon: Icons.videocam_outlined,
+                    title: 'Join a Conference',
+                    subtitle: 'Paste your meeting link to join instantly. No account needed.',
+                    child: Column(
+                      children: [
+                        TextField(
+                          controller: _linkController,
+                          decoration: const InputDecoration(
+                            hintText: 'conf.m8chat.au/YourMeeting',
+                            prefixIcon: Icon(Icons.link),
+                          ),
+                          textInputAction: TextInputAction.go,
+                          onSubmitted: (_) => _joinConference(),
+                        ),
+                        const SizedBox(height: 12),
+                        ElevatedButton.icon(
+                          onPressed: _joinConference,
+                          icon: const Icon(Icons.videocam),
+                          label: const Text('Join Meeting'),
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  const SizedBox(height: 20),
+
+                  // --- Divider ---
+                  Row(
+                    children: [
+                      const Expanded(child: Divider()),
+                      Padding(
+                        padding: const EdgeInsets.symmetric(horizontal: 16),
+                        child: Text(
+                          'or',
+                          style: theme.textTheme.bodySmall?.copyWith(
+                            color: theme.colorScheme.onSurface.withAlpha(102),
+                          ),
+                        ),
+                      ),
+                      const Expanded(child: Divider()),
+                    ],
+                  ),
+
+                  const SizedBox(height: 20),
+
+                  // --- Sign in section ---
+                  _SectionCard(
+                    theme: theme,
+                    isDark: isDark,
+                    icon: Icons.chat_bubble_outline,
+                    title: 'Sign In to Chat',
+                    subtitle: 'Access your rooms, messages and video calls.',
+                    child: OutlinedButton.icon(
+                      onPressed: () => context.go('/login'),
+                      icon: const Icon(Icons.login),
+                      label: const Text('Sign In'),
+                      style: OutlinedButton.styleFrom(
+                        minimumSize: const Size.fromHeight(52),
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(12),
+                        ),
+                        side: BorderSide(color: theme.colorScheme.primary),
+                        textStyle: const TextStyle(
+                          fontSize: 16,
+                          fontWeight: FontWeight.w600,
+                        ),
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+        ),
+      ),
+    );
+  }
+}
+
+/// Styled card for each welcome section.
+class _SectionCard extends StatelessWidget {
+  const _SectionCard({
+    required this.theme,
+    required this.isDark,
+    required this.icon,
+    required this.title,
+    required this.subtitle,
+    required this.child,
+  });
+
+  final ThemeData theme;
+  final bool isDark;
+  final IconData icon;
+  final String title;
+  final String subtitle;
+  final Widget child;
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(20),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                Icon(icon, color: theme.colorScheme.primary, size: 28),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: Text(
+                    title,
+                    style: theme.textTheme.titleMedium?.copyWith(
+                      fontWeight: FontWeight.w600,
+                    ),
+                  ),
+                ),
+              ],
+            ),
+            const SizedBox(height: 8),
+            Text(
+              subtitle,
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: theme.colorScheme.onSurface.withAlpha(153),
+              ),
+            ),
+            const SizedBox(height: 16),
+            child,
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/panic/data/panic_repository.dart

@@ -0,0 +1,142 @@
+// Version: 1.0.0 | Created: 2026-07-04
+// Panic button repository — config in Matrix account data plus the trigger
+// action: send an alert text message and (when the browser grants it) an
+// m.location pin to the configured room.
+//
+// The alert message is sent FIRST so a denied/slow geolocation permission can
+// never block the emergency alert itself.
+//
+// NOTE web-only geolocation (dart:js_interop + package:web). When native
+// Android/iOS builds happen, gate this behind a conditional import.
+
+import 'dart:async';
+import 'dart:js_interop';
+
+import 'package:flutter/foundation.dart';
+import 'package:matrix/matrix.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import 'package:web/web.dart' as web;
+
+import '../../../core/network/matrix_client.dart';
+
+part 'panic_repository.g.dart';
+
+/// Account-data event type holding the panic configuration.
+const kPanicConfigType = 'au.m8chat.panic';
+
+/// Panic button configuration.
+class PanicConfig {
+  const PanicConfig({required this.roomId, required this.message});
+
+  final String roomId;
+  final String message;
+
+  static PanicConfig? fromAccountData(Client client) {
+    final content = client.accountData[kPanicConfigType]?.content;
+    final roomId = content?['room_id'];
+    if (roomId is! String || roomId.isEmpty) return null;
+    final message = content?['message'];
+    return PanicConfig(
+      roomId: roomId,
+      message: message is String && message.isNotEmpty
+          ? message
+          : 'EMERGENCY: I need help. This is an automated alert from M8Chat.',
+    );
+  }
+}
+
+class PanicRepository {
+  PanicRepository({required Client client}) : _client = client;
+
+  final Client _client;
+
+  PanicConfig? get config => PanicConfig.fromAccountData(_client);
+
+  Future<void> saveConfig({
+    required String roomId,
+    required String message,
+  }) async {
+    final userId = _client.userID;
+    if (userId == null) throw Exception('Not logged in');
+    await _client.setAccountData(userId, kPanicConfigType, {
+      'room_id': roomId,
+      'message': message,
+    });
+  }
+
+  Future<void> clearConfig() async {
+    final userId = _client.userID;
+    if (userId == null) return;
+    await _client.setAccountData(userId, kPanicConfigType, {});
+  }
+
+  /// Fires the panic alert. Returns an error string, or null on success.
+  Future<String?> trigger() async {
+    final cfg = config;
+    if (cfg == null) return 'Panic button is not configured.';
+    final room = _client.getRoomById(cfg.roomId);
+    if (room == null) return 'Configured room is no longer available.';
+
+    // 1. The alert text goes out first — never blocked by geolocation.
+    try {
+      await room.sendTextEvent('\u{1F6A8} ${cfg.message}');
+    } on Exception catch (e) {
+      return 'Could not send alert: $e';
+    }
+
+    // 2. Best-effort location pin.
+    final position = await _currentPosition();
+    if (position != null) {
+      final (lat, lon) = position;
+      final geoUri = 'geo:$lat,$lon';
+      try {
+        await room.sendEvent({
+          'msgtype': 'm.location',
+          'body': 'Emergency location: $geoUri',
+          'geo_uri': geoUri,
+          'org.matrix.msc3488.location': {'uri': geoUri},
+          'org.matrix.msc3488.asset': {'type': 'm.pin'},
+        }, type: 'm.room.message');
+      } on Exception catch (e) {
+        debugPrint('[Panic] location send failed: $e');
+      }
+    } else {
+      debugPrint('[Panic] no geolocation available — alert sent without it');
+    }
+    return null;
+  }
+
+  /// Browser geolocation with a hard 10s budget. Null when denied/unavailable.
+  Future<(double, double)?> _currentPosition() async {
+    final completer = Completer<(double, double)?>();
+    try {
+      web.window.navigator.geolocation.getCurrentPosition(
+        (web.GeolocationPosition pos) {
+          if (!completer.isCompleted) {
+            completer.complete((pos.coords.latitude, pos.coords.longitude));
+          }
+        }.toJS,
+        (web.GeolocationPositionError err) {
+          if (!completer.isCompleted) completer.complete(null);
+        }.toJS,
+        web.PositionOptions(
+          enableHighAccuracy: true,
+          timeout: 8000,
+          maximumAge: 60000,
+        ),
+      );
+    } catch (e) {
+      debugPrint('[Panic] geolocation API unavailable: $e');
+      return null;
+    }
+    return completer.future.timeout(
+      const Duration(seconds: 10),
+      onTimeout: () => null,
+    );
+  }
+}
+
+@Riverpod(keepAlive: true)
+PanicRepository panicRepository(Ref ref) {
+  return PanicRepository(client: ref.watch(matrixClientProvider));
+}

lib/features/panic/presentation/panic_button.dart

@@ -0,0 +1,147 @@
+// Version: 1.1.0 | Created: 2026-07-04 | Updated: 2026-07-04
+// Panic trigger button for the rooms AppBar. Push-to-talk style: HOLD for
+// 700ms to fire the alert, with a filling ring showing progress so a brush
+// cannot fire it and the user sees exactly when it sends. A plain tap only
+// shows the hint. Only rendered when a panic configuration exists.
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../data/panic_repository.dart';
+
+class PanicButton extends ConsumerStatefulWidget {
+  const PanicButton({super.key});
+
+  @override
+  ConsumerState<PanicButton> createState() => _PanicButtonState();
+}
+
+class _PanicButtonState extends ConsumerState<PanicButton>
+    with SingleTickerProviderStateMixin {
+  static const _holdDuration = Duration(milliseconds: 700);
+
+  late final AnimationController _holdController;
+  bool _sending = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _holdController = AnimationController(vsync: this, duration: _holdDuration)
+      ..addStatusListener(_onHoldStatus);
+  }
+
+  @override
+  void dispose() {
+    _holdController.dispose();
+    super.dispose();
+  }
+
+  void _onHoldStatus(AnimationStatus status) {
+    // The ring filled all the way: the hold completed, fire the alert.
+    if (status == AnimationStatus.completed) {
+      HapticFeedback.heavyImpact();
+      _trigger();
+      _holdController.reset();
+    }
+  }
+
+  void _onHoldStart() {
+    if (_sending) return;
+    _holdController.forward(from: 0);
+  }
+
+  void _onHoldCancelled() {
+    // Released before the ring filled: cancel silently.
+    if (_holdController.status == AnimationStatus.forward) {
+      _holdController.reset();
+    }
+  }
+
+  Future<void> _trigger() async {
+    if (_sending) return;
+    setState(() => _sending = true);
+    final messenger = ScaffoldMessenger.of(context);
+    messenger.showSnackBar(
+      const SnackBar(content: Text('Sending emergency alert…')),
+    );
+    final error = await ref.read(panicRepositoryProvider).trigger();
+    if (!mounted) return;
+    setState(() => _sending = false);
+    messenger.hideCurrentSnackBar();
+    messenger.showSnackBar(
+      SnackBar(
+        backgroundColor: error == null ? Colors.green.shade800 : null,
+        content: Text(error ?? 'Emergency alert sent with your location.'),
+      ),
+    );
+  }
+
+  void _showHint() {
+    ScaffoldMessenger.of(context).showSnackBar(
+      const SnackBar(
+        content: Text('Hold the button to send the emergency alert.'),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // Hide when not configured. Config lives in account data, which is
+    // available once sync has run; rebuilds happen with the parent screen.
+    final configured = ref.watch(panicRepositoryProvider).config != null;
+    if (!configured) return const SizedBox.shrink();
+
+    return GestureDetector(
+      onTap: _showHint,
+      onLongPressDown: (_) => _onHoldStart(),
+      onLongPressUp: _onHoldCancelled,
+      onLongPressCancel: _onHoldCancelled,
+      child: Tooltip(
+        message: 'Hold to send emergency alert',
+        child: SizedBox(
+          width: 48,
+          height: 48,
+          child: Center(
+            child: SizedBox(
+              width: 40,
+              height: 40,
+              child: Stack(
+                alignment: Alignment.center,
+                children: [
+                  // Progress ring, only painted while the hold is in progress.
+                  AnimatedBuilder(
+                    animation: _holdController,
+                    builder: (context, _) {
+                      if (_holdController.value == 0) {
+                        return const SizedBox.shrink();
+                      }
+                      return SizedBox(
+                        width: 36,
+                        height: 36,
+                        child: CircularProgressIndicator(
+                          value: _holdController.value,
+                          strokeWidth: 3,
+                          color: Colors.red,
+                          backgroundColor: Colors.red.withAlpha(40),
+                        ),
+                      );
+                    },
+                  ),
+                  if (_sending)
+                    const SizedBox(
+                      width: 20,
+                      height: 20,
+                      child: CircularProgressIndicator(strokeWidth: 2),
+                    )
+                  else
+                    const Icon(Icons.emergency_share, color: Colors.red),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/panic/presentation/panic_settings_dialog.dart

@@ -0,0 +1,166 @@
+// Version: 1.0.0 | Created: 2026-07-04
+// Panic button settings — choose the alert room and message.
+// Opened from Profile > Emergency panic button.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:matrix/matrix.dart';
+
+import '../../../core/network/matrix_client.dart';
+import '../data/panic_repository.dart';
+
+Future<void> showPanicSettingsDialog(BuildContext context, WidgetRef ref) {
+  return showDialog<void>(
+    context: context,
+    builder: (_) => const _PanicSettingsDialog(),
+  );
+}
+
+class _PanicSettingsDialog extends ConsumerStatefulWidget {
+  const _PanicSettingsDialog();
+
+  @override
+  ConsumerState<_PanicSettingsDialog> createState() =>
+      _PanicSettingsDialogState();
+}
+
+class _PanicSettingsDialogState extends ConsumerState<_PanicSettingsDialog> {
+  String? _roomId;
+  late final TextEditingController _messageController;
+  bool _saving = false;
+
+  @override
+  void initState() {
+    super.initState();
+    final cfg = ref.read(panicRepositoryProvider).config;
+    _roomId = cfg?.roomId;
+    _messageController = TextEditingController(
+      text: cfg?.message ??
+          'EMERGENCY: I need help. This is an automated alert from M8Chat.',
+    );
+  }
+
+  @override
+  void dispose() {
+    _messageController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _save() async {
+    final roomId = _roomId;
+    if (roomId == null) return;
+    setState(() => _saving = true);
+    try {
+      await ref.read(panicRepositoryProvider).saveConfig(
+            roomId: roomId,
+            message: _messageController.text.trim(),
+          );
+      if (mounted) {
+        Navigator.of(context).pop();
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(
+            content: Text('Panic button armed. Hold the alert icon '
+                'on the rooms screen to trigger it.'),
+          ),
+        );
+      }
+    } on Exception catch (e) {
+      if (mounted) {
+        setState(() => _saving = false);
+        ScaffoldMessenger.of(context)
+            .showSnackBar(SnackBar(content: Text('Could not save: $e')));
+      }
+    }
+  }
+
+  Future<void> _disable() async {
+    setState(() => _saving = true);
+    await ref.read(panicRepositoryProvider).clearConfig();
+    if (mounted) {
+      Navigator.of(context).pop();
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Panic button disabled.')),
+      );
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final client = ref.watch(matrixClientProvider);
+    final rooms = client.rooms
+        .where((r) => r.membership == Membership.join)
+        .toList()
+      ..sort((a, b) => a
+          .getLocalizedDisplayname()
+          .toLowerCase()
+          .compareTo(b.getLocalizedDisplayname().toLowerCase()));
+    final hasConfig = ref.read(panicRepositoryProvider).config != null;
+
+    return AlertDialog(
+      title: const Text('Emergency panic button'),
+      content: SingleChildScrollView(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            const Text(
+              'When you hold the alert icon, M8Chat sends this message '
+              'and your current location to the room you choose here.',
+            ),
+            const SizedBox(height: 16),
+            DropdownButtonFormField<String>(
+              initialValue:
+                  rooms.any((r) => r.id == _roomId) ? _roomId : null,
+              isExpanded: true,
+              decoration: const InputDecoration(
+                labelText: 'Send alert to room',
+                border: OutlineInputBorder(),
+              ),
+              items: [
+                for (final room in rooms)
+                  DropdownMenuItem(
+                    value: room.id,
+                    child: Text(
+                      room.getLocalizedDisplayname(),
+                      overflow: TextOverflow.ellipsis,
+                    ),
+                  ),
+              ],
+              onChanged: (v) => setState(() => _roomId = v),
+            ),
+            const SizedBox(height: 16),
+            TextField(
+              controller: _messageController,
+              maxLines: 3,
+              decoration: const InputDecoration(
+                labelText: 'Alert message',
+                border: OutlineInputBorder(),
+              ),
+            ),
+          ],
+        ),
+      ),
+      actions: [
+        if (hasConfig)
+          TextButton(
+            onPressed: _saving ? null : _disable,
+            child: const Text('Disable', style: TextStyle(color: Colors.red)),
+          ),
+        TextButton(
+          onPressed: _saving ? null : () => Navigator.of(context).pop(),
+          child: const Text('Cancel'),
+        ),
+        FilledButton(
+          onPressed: _saving || _roomId == null ? null : _save,
+          child: _saving
+              ? const SizedBox(
+                  width: 18,
+                  height: 18,
+                  child: CircularProgressIndicator(strokeWidth: 2),
+                )
+              : const Text('Save'),
+        ),
+      ],
+    );
+  }
+}

lib/features/profile/presentation/key_restore_dialog.dart

@@ -0,0 +1,213 @@
+// Version: 1.0.1 | Created: 2026-04-11 | Updated: 2026-07-03
+// Dialog for entering a recovery key to restore encrypted message keys
+// from the server-side key backup (SSSS / Secure Secret Storage).
+
+import 'package:flutter/material.dart';
+import 'package:matrix/encryption/ssss.dart';
+import 'package:matrix/matrix.dart';
+
+/// Shows a dialog that asks the user for their recovery key, unlocks SSSS,
+/// and restores all Megolm session keys from the server backup.
+///
+/// Returns `true` if keys were restored successfully, `false` otherwise.
+Future<bool> showKeyRestoreDialog(BuildContext context, Client client) async {
+  final result = await showDialog<bool>(
+    context: context,
+    barrierDismissible: false,
+    builder: (_) => _KeyRestoreDialog(client: client),
+  );
+  return result ?? false;
+}
+
+class _KeyRestoreDialog extends StatefulWidget {
+  const _KeyRestoreDialog({required this.client});
+  final Client client;
+
+  @override
+  State<_KeyRestoreDialog> createState() => _KeyRestoreDialogState();
+}
+
+enum _RestorePhase { input, unlocking, downloading, done, error }
+
+class _KeyRestoreDialogState extends State<_KeyRestoreDialog> {
+  final _controller = TextEditingController();
+  _RestorePhase _phase = _RestorePhase.input;
+  String? _error;
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  Future<void> _restore() async {
+    final key = _controller.text.trim();
+    if (key.isEmpty) return;
+
+    final enc = widget.client.encryption;
+    if (enc == null) {
+      setState(() {
+        _phase = _RestorePhase.error;
+        _error = 'Encryption is not available.';
+      });
+      return;
+    }
+
+    // Phase 1: Unlock SSSS with the recovery key
+    setState(() => _phase = _RestorePhase.unlocking);
+    try {
+      final ssssKey = enc.ssss.open();
+      await ssssKey.unlock(keyOrPassphrase: key);
+      debugPrint('[KeyRestore] SSSS unlocked successfully');
+    } on InvalidPassphraseException {
+      setState(() {
+        _phase = _RestorePhase.error;
+        _error = 'Invalid recovery key. Please check and try again.';
+      });
+      return;
+    } on Exception catch (e) {
+      setState(() {
+        _phase = _RestorePhase.error;
+        _error = 'Could not unlock: ${e.toString().split('\n').first}';
+      });
+      return;
+    }
+
+    // Phase 2: Download and decrypt all keys from backup
+    setState(() => _phase = _RestorePhase.downloading);
+    try {
+      await enc.keyManager.loadAllKeys();
+      debugPrint('[KeyRestore] All keys loaded from backup');
+      setState(() => _phase = _RestorePhase.done);
+    } on MatrixException catch (e) {
+      if (e.errcode == 'M_NOT_FOUND') {
+        setState(() {
+          _phase = _RestorePhase.error;
+          _error = 'No key backup found on the server for this account.';
+        });
+      } else {
+        setState(() {
+          _phase = _RestorePhase.error;
+          _error = 'Server error: ${e.errorMessage}';
+        });
+      }
+    } on Exception catch (e) {
+      setState(() {
+        _phase = _RestorePhase.error;
+        _error = 'Failed to download keys: ${e.toString().split('\n').first}';
+      });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: Text(switch (_phase) {
+        _RestorePhase.input => 'Restore Message Keys',
+        _RestorePhase.unlocking => 'Unlocking...',
+        _RestorePhase.downloading => 'Downloading Keys...',
+        _RestorePhase.done => 'Keys Restored',
+        _RestorePhase.error => 'Restore Failed',
+      }),
+      content: switch (_phase) {
+        _RestorePhase.input => Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              const Text(
+                'Enter your recovery key to decrypt old messages. '
+                'This is the key you were given when you set up '
+                'encryption in Element.',
+              ),
+              const SizedBox(height: 16),
+              TextField(
+                controller: _controller,
+                decoration: const InputDecoration(
+                  hintText: 'EsTc oRgW rqHN...',
+                  labelText: 'Recovery key',
+                  border: OutlineInputBorder(),
+                ),
+                maxLines: 3,
+                textInputAction: TextInputAction.done,
+                onSubmitted: (_) => _restore(),
+              ),
+            ],
+          ),
+        _RestorePhase.unlocking => const _ProgressContent(
+            message: 'Verifying recovery key...',
+          ),
+        _RestorePhase.downloading => const _ProgressContent(
+            message: 'Downloading and decrypting message keys...\n'
+                'This may take a moment.',
+          ),
+        _RestorePhase.done => const Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Icon(Icons.check_circle, color: Colors.green, size: 48),
+              SizedBox(height: 16),
+              Text(
+                'Message keys have been restored. '
+                'Go back to your rooms. Previously encrypted '
+                'messages should now be readable.',
+              ),
+            ],
+          ),
+        _RestorePhase.error => Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              const Icon(Icons.error_outline, color: Colors.red, size: 48),
+              const SizedBox(height: 16),
+              Text(_error ?? 'An unknown error occurred.'),
+            ],
+          ),
+      },
+      actions: switch (_phase) {
+        _RestorePhase.input => [
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text('Cancel'),
+            ),
+            ElevatedButton(
+              onPressed: _restore,
+              child: const Text('Restore'),
+            ),
+          ],
+        _RestorePhase.unlocking || _RestorePhase.downloading => [],
+        _RestorePhase.done => [
+            ElevatedButton(
+              onPressed: () => Navigator.of(context).pop(true),
+              child: const Text('Done'),
+            ),
+          ],
+        _RestorePhase.error => [
+            TextButton(
+              onPressed: () =>
+                  setState(() => _phase = _RestorePhase.input),
+              child: const Text('Try again'),
+            ),
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text('Close'),
+            ),
+          ],
+      },
+    );
+  }
+}
+
+class _ProgressContent extends StatelessWidget {
+  const _ProgressContent({required this.message});
+  final String message;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        const CircularProgressIndicator(),
+        const SizedBox(height: 16),
+        Text(message, textAlign: TextAlign.center),
+      ],
+    );
+  }
+}

lib/features/profile/presentation/key_restore_prompt.dart

@@ -0,0 +1,80 @@
+// Version: 1.0.0 | Created: 2026-07-04
+// Post-login prompt: if the account has secret storage (key backup) and this
+// fresh device cannot read encrypted history yet, offer the recovery-key
+// restore straight away instead of leaving it buried in Profile > Security.
+//
+// Shown at most once per login session. "Later" keeps the old behaviour
+// (restore manually from the Profile tab).
+
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:matrix/matrix.dart';
+
+import 'key_restore_dialog.dart';
+
+bool _promptedThisSession = false;
+
+/// Reset when a new login happens (called from the login flow if needed).
+void resetKeyRestorePrompt() => _promptedThisSession = false;
+
+/// Checks whether the freshly logged-in session needs a key restore and,
+/// if so, asks the user. Safe to call multiple times; only fires once.
+Future<void> maybePromptKeyRestore(BuildContext context, Client client) async {
+  if (_promptedThisSession) return;
+  _promptedThisSession = true;
+
+  try {
+    // Wait for the first sync so account data (secret storage config) exists.
+    if (client.prevBatch == null) {
+      await client.onSync.stream.first.timeout(const Duration(seconds: 30));
+    }
+  } on TimeoutException {
+    debugPrint('[KeyRestorePrompt] first sync timed out — skipping');
+    return;
+  }
+
+  final enc = client.encryption;
+  if (enc == null) return;
+
+  // No secret storage on the account → nothing to restore from.
+  final hasSecretStorage =
+      client.accountData.containsKey('m.secret_storage.default_key');
+  if (!hasSecretStorage) return;
+
+  // Keys already cached (or session verified) → nothing to do.
+  var cached = false;
+  try {
+    cached = await enc.keyManager.isCached();
+  } on Exception catch (e) {
+    debugPrint('[KeyRestorePrompt] isCached failed: $e');
+  }
+  if (cached && !client.isUnknownSession) return;
+
+  if (!context.mounted) return;
+
+  final wantsRestore = await showDialog<bool>(
+    context: context,
+    builder: (ctx) => AlertDialog(
+      title: const Text('Restore encrypted messages?'),
+      content: const Text(
+        'This device cannot read your older encrypted messages yet. '
+        'Enter your recovery key now to unlock them, or do it later '
+        'from Profile > Security & Privacy.',
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(ctx).pop(false),
+          child: const Text('Later'),
+        ),
+        FilledButton(
+          onPressed: () => Navigator.of(ctx).pop(true),
+          child: const Text('Enter recovery key'),
+        ),
+      ],
+    ),
+  );
+
+  if (wantsRestore != true || !context.mounted) return;
+  await showKeyRestoreDialog(context, client);
+}

lib/features/profile/presentation/profile_screen.dart

@@ -1,4 +1,4 @@
-// Version: 1.1.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 1.5.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // Profile screen. Shows current user info and logout button.
 
 import 'package:flutter/material.dart';
@@ -10,6 +10,10 @@ import '../../../core/config/app_config.dart';
 import '../../../core/network/matrix_client.dart';
 import '../../../shared/utils/matrix_id.dart';
 import '../../../shared/widgets/matrix_avatar.dart';
+import '../../panic/data/panic_repository.dart';
+import '../../panic/presentation/panic_settings_dialog.dart';
+import 'key_restore_dialog.dart';
+import 'security_setup_dialog.dart';
 
 class ProfileScreen extends ConsumerWidget {
   const ProfileScreen({super.key, this.embedded = false});
@@ -85,14 +89,57 @@ class ProfileScreen extends ConsumerWidget {
             ListTile(
               leading: const Icon(Icons.lock_outline),
               title: const Text('End-to-end encryption'),
-              subtitle: const Text('Setup coming in Phase 3'),
+              subtitle: Text(
+                client.encryptionEnabled
+                    ? 'Active. Messages are encrypted'
+                    : 'Not available in this browser',
+              ),
               enabled: false,
             ),
             ListTile(
-              leading: const Icon(Icons.verified_user_outlined),
-              title: const Text('Verify devices'),
-              subtitle: const Text('Cross-signing setup — coming in Phase 2'),
-              enabled: false,
+              leading: const Icon(Icons.key_outlined),
+              title: const Text('Restore message keys'),
+              subtitle: const Text(
+                'Enter your recovery key to decrypt old messages',
+              ),
+              enabled: client.encryptionEnabled,
+              onTap: client.encryptionEnabled
+                  ? () async {
+                      final restored =
+                          await showKeyRestoreDialog(context, client);
+                      if (restored && context.mounted) {
+                        ScaffoldMessenger.of(context).showSnackBar(
+                          const SnackBar(
+                            content: Text('Keys restored. Reopen rooms '
+                                'to see decrypted messages.'),
+                          ),
+                        );
+                      }
+                    }
+                  : null,
+            ),
+            ListTile(
+              leading: const Icon(Icons.shield_outlined),
+              title: const Text('Security setup'),
+              subtitle: Text(
+                client.encryption?.crossSigning.enabled == true
+                    ? 'Cross-signing active. Device verified'
+                    : 'Set up cross-signing and key backup',
+              ),
+              enabled: client.encryptionEnabled,
+              onTap: client.encryptionEnabled
+                  ? () async {
+                      final completed =
+                          await showSecuritySetupDialog(context, client);
+                      if (completed && context.mounted) {
+                        ScaffoldMessenger.of(context).showSnackBar(
+                          const SnackBar(
+                            content: Text('Security setup complete.'),
+                          ),
+                        );
+                      }
+                    }
+                  : null,
             ),
             ListTile(
               leading: const Icon(Icons.password_outlined),
@@ -102,6 +149,16 @@ class ProfileScreen extends ConsumerWidget {
             ),
           ],
         ),
+        ListTile(
+          leading: const Icon(Icons.emergency_share, color: Colors.red),
+          title: const Text('Emergency panic button'),
+          subtitle: Text(
+            ref.watch(panicRepositoryProvider).config != null
+                ? 'Armed. Hold the alert icon on the rooms screen to trigger.'
+                : 'Send your location and an alert to a room of your choice',
+          ),
+          onTap: () => showPanicSettingsDialog(context, ref),
+        ),
         const SizedBox(height: 16),
         const Divider(),
         const SizedBox(height: 16),

lib/features/profile/presentation/security_setup_dialog.dart

@@ -0,0 +1,416 @@
+// Version: 1.0.1 | Created: 2026-04-11 | Updated: 2026-07-03
+// Security setup dialog: drives the Matrix SDK Bootstrap to set up
+// SSSS, cross-signing, and online key backup in one flow.
+// For new users: creates everything, shows recovery key.
+// For existing users: unlocks with recovery key, restores message keys.
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:matrix/encryption/ssss.dart';
+import 'package:matrix/encryption/utils/bootstrap.dart';
+import 'package:matrix/matrix.dart';
+
+/// Shows the security setup dialog. Returns true if setup completed.
+Future<bool> showSecuritySetupDialog(
+    BuildContext context, Client client) async {
+  final result = await showDialog<bool>(
+    context: context,
+    barrierDismissible: false,
+    builder: (_) => _SecuritySetupDialog(client: client),
+  );
+  return result ?? false;
+}
+
+class _SecuritySetupDialog extends StatefulWidget {
+  const _SecuritySetupDialog({required this.client});
+  final Client client;
+
+  @override
+  State<_SecuritySetupDialog> createState() => _SecuritySetupDialogState();
+}
+
+enum _Phase {
+  checking,
+  needsRecoveryKey,
+  working,
+  showRecoveryKey,
+  restoring,
+  done,
+  error,
+}
+
+class _SecuritySetupDialogState extends State<_SecuritySetupDialog> {
+  final _keyController = TextEditingController();
+  _Phase _phase = _Phase.checking;
+  String? _error;
+  String? _recoveryKey;
+  String _statusMessage = 'Checking security setup...';
+  late Bootstrap _bootstrap;
+
+  @override
+  void initState() {
+    super.initState();
+    _start();
+  }
+
+  @override
+  void dispose() {
+    _keyController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _start() async {
+    final enc = widget.client.encryption;
+    if (enc == null) {
+      _setError('Encryption is not available in this browser.');
+      return;
+    }
+
+    _bootstrap = enc.bootstrap(onUpdate: (_) {});
+
+    try {
+      await _driveBootstrap();
+    } catch (e) {
+      _setError(e.toString().split('\n').first);
+    }
+  }
+
+  Future<void> _driveBootstrap() async {
+    while (_bootstrap.state != BootstrapState.done &&
+        _bootstrap.state != BootstrapState.error) {
+      debugPrint('[Security] Bootstrap state: ${_bootstrap.state}');
+
+      switch (_bootstrap.state) {
+        case BootstrapState.loading:
+          setState(() {
+            _phase = _Phase.working;
+            _statusMessage = 'Setting up...';
+          });
+          // Wait for the bootstrap to advance via onUpdate
+          await Future.delayed(const Duration(milliseconds: 200));
+
+        case BootstrapState.askWipeSsss:
+          // Existing SSSS found — don't wipe, use it
+          setState(() {
+            _phase = _Phase.working;
+            _statusMessage = 'Found existing security setup...';
+          });
+          _bootstrap.wipeSsss(false);
+
+        case BootstrapState.askUseExistingSsss:
+          // Use the existing SSSS
+          _bootstrap.useExistingSsss(true);
+
+        case BootstrapState.openExistingSsss:
+          // Need the recovery key from the user
+          if (!_bootstrap.newSsssKey!.isUnlocked) {
+            setState(() => _phase = _Phase.needsRecoveryKey);
+            return; // Wait for user input
+          }
+          // Already unlocked, continue
+          setState(() {
+            _phase = _Phase.working;
+            _statusMessage = 'Verifying security keys...';
+          });
+          await _bootstrap.openExistingSsss();
+
+        case BootstrapState.askBadSsss:
+          // Ignore bad secrets and continue
+          _bootstrap.ignoreBadSecrets(true);
+
+        case BootstrapState.askUnlockSsss:
+          // Old keys need unlocking — this is a migration scenario
+          if (_bootstrap.oldSsssKeys != null) {
+            for (final key in _bootstrap.oldSsssKeys!.values) {
+              if (!key.isUnlocked) {
+                setState(() => _phase = _Phase.needsRecoveryKey);
+                return; // Wait for user input
+              }
+            }
+          }
+          _bootstrap.unlockedSsss();
+
+        case BootstrapState.askNewSsss:
+          // Create new SSSS (no passphrase — recovery key only)
+          setState(() {
+            _phase = _Phase.working;
+            _statusMessage = 'Creating security keys...';
+          });
+          await _bootstrap.newSsss();
+
+        case BootstrapState.askSetupCrossSigning:
+          setState(() => _statusMessage = 'Setting up cross-signing...');
+          await _bootstrap.askSetupCrossSigning(
+            setupMasterKey: true,
+            setupSelfSigningKey: true,
+            setupUserSigningKey: true,
+          );
+
+        case BootstrapState.askWipeCrossSigning:
+          // Don't wipe existing cross-signing
+          await _bootstrap.wipeCrossSigning(false);
+
+        case BootstrapState.askSetupOnlineKeyBackup:
+          setState(() => _statusMessage = 'Creating key backup...');
+          await _bootstrap.askSetupOnlineKeyBackup(true);
+
+        case BootstrapState.askWipeOnlineKeyBackup:
+          // Don't wipe existing backup
+          _bootstrap.wipeOnlineKeyBackup(false);
+
+        case BootstrapState.done:
+        case BootstrapState.error:
+          break; // Exit loop
+      }
+    }
+
+    if (_bootstrap.state == BootstrapState.error) {
+      _setError('Setup failed. Please try again.');
+      return;
+    }
+
+    // Success — show recovery key if we created new SSSS
+    _recoveryKey = _bootstrap.newSsssKey?.recoveryKey;
+
+    if (_recoveryKey != null && _phase != _Phase.needsRecoveryKey) {
+      // New setup — show the recovery key
+      setState(() => _phase = _Phase.showRecoveryKey);
+    } else {
+      // Existing setup — restore keys from backup
+      await _restoreKeys();
+    }
+  }
+
+  /// Called when the user enters their recovery key for existing SSSS.
+  Future<void> _unlockWithRecoveryKey() async {
+    final key = _keyController.text.trim();
+    if (key.isEmpty) return;
+
+    setState(() {
+      _phase = _Phase.working;
+      _statusMessage = 'Verifying recovery key...';
+    });
+
+    try {
+      // Unlock whichever SSSS key is waiting
+      if (_bootstrap.newSsssKey != null && !_bootstrap.newSsssKey!.isUnlocked) {
+        await _bootstrap.newSsssKey!.unlock(keyOrPassphrase: key);
+      }
+      if (_bootstrap.oldSsssKeys != null) {
+        for (final ssssKey in _bootstrap.oldSsssKeys!.values) {
+          if (!ssssKey.isUnlocked) {
+            await ssssKey.unlock(keyOrPassphrase: key);
+          }
+        }
+      }
+    } on InvalidPassphraseException {
+      _setError('Invalid recovery key. Please check and try again.');
+      return;
+    } on Exception catch (e) {
+      _setError('Could not unlock: ${e.toString().split('\n').first}');
+      return;
+    }
+
+    // Continue the bootstrap
+    try {
+      await _driveBootstrap();
+    } catch (e) {
+      _setError(e.toString().split('\n').first);
+    }
+  }
+
+  /// Download all keys from the online key backup after SSSS is unlocked.
+  Future<void> _restoreKeys() async {
+    setState(() {
+      _phase = _Phase.restoring;
+      _statusMessage = 'Downloading message keys from backup...';
+    });
+
+    try {
+      await widget.client.encryption?.keyManager.loadAllKeys();
+      debugPrint('[Security] All keys loaded from backup');
+    } on MatrixException catch (e) {
+      if (e.errcode != 'M_NOT_FOUND') {
+        debugPrint('[Security] Key restore error: ${e.errorMessage}');
+      }
+      // M_NOT_FOUND just means no backup exists yet — not an error
+    } on Exception catch (e) {
+      debugPrint('[Security] Key restore error: $e');
+    }
+
+    setState(() => _phase = _Phase.done);
+  }
+
+  void _setError(String message) {
+    setState(() {
+      _phase = _Phase.error;
+      _error = message;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: Text(switch (_phase) {
+        _Phase.checking => 'Security Setup',
+        _Phase.needsRecoveryKey => 'Enter Recovery Key',
+        _Phase.working || _Phase.restoring => 'Setting Up...',
+        _Phase.showRecoveryKey => 'Save Your Recovery Key',
+        _Phase.done => 'Security Setup Complete',
+        _Phase.error => 'Setup Error',
+      }),
+      content: SizedBox(
+        width: 400,
+        child: switch (_phase) {
+          _Phase.checking || _Phase.working || _Phase.restoring => Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                const CircularProgressIndicator(),
+                const SizedBox(height: 16),
+                Text(_statusMessage, textAlign: TextAlign.center),
+              ],
+            ),
+          _Phase.needsRecoveryKey => Column(
+              mainAxisSize: MainAxisSize.min,
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const Text(
+                  'Enter your recovery key to unlock your encrypted '
+                  'messages. This is the key shown when you first set '
+                  'up encryption in Element.',
+                ),
+                const SizedBox(height: 16),
+                TextField(
+                  controller: _keyController,
+                  decoration: const InputDecoration(
+                    hintText: 'EsTc oRgW rqHN...',
+                    labelText: 'Recovery key or passphrase',
+                    border: OutlineInputBorder(),
+                  ),
+                  maxLines: 3,
+                  onSubmitted: (_) => _unlockWithRecoveryKey(),
+                ),
+              ],
+            ),
+          _Phase.showRecoveryKey => Column(
+              mainAxisSize: MainAxisSize.min,
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const Text(
+                  'Your recovery key has been created. Save it somewhere '
+                  'safe. You will need it to restore your messages on '
+                  'new devices.',
+                ),
+                const SizedBox(height: 16),
+                Container(
+                  width: double.infinity,
+                  padding: const EdgeInsets.all(16),
+                  decoration: BoxDecoration(
+                    color: Theme.of(context)
+                        .colorScheme
+                        .surfaceContainerHighest,
+                    borderRadius: BorderRadius.circular(8),
+                    border: Border.all(
+                      color: Theme.of(context).colorScheme.outline,
+                    ),
+                  ),
+                  child: SelectableText(
+                    _recoveryKey ?? '',
+                    style: const TextStyle(
+                      fontFamily: 'monospace',
+                      fontSize: 14,
+                      letterSpacing: 1.2,
+                    ),
+                  ),
+                ),
+                const SizedBox(height: 12),
+                Row(
+                  children: [
+                    const Icon(Icons.warning_amber, size: 16),
+                    const SizedBox(width: 8),
+                    Expanded(
+                      child: Text(
+                        'If you lose this key, you will not be able to '
+                        'read your encrypted messages on new devices.',
+                        style: Theme.of(context).textTheme.bodySmall,
+                      ),
+                    ),
+                  ],
+                ),
+              ],
+            ),
+          _Phase.done => const Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Icon(Icons.verified, color: Colors.green, size: 48),
+                SizedBox(height: 16),
+                Text(
+                  'Security is set up. Cross-signing is active and '
+                  'your message keys are backed up. Previously '
+                  'encrypted messages should now be readable.',
+                ),
+              ],
+            ),
+          _Phase.error => Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                const Icon(Icons.error_outline, color: Colors.red, size: 48),
+                const SizedBox(height: 16),
+                Text(_error ?? 'An unknown error occurred.'),
+              ],
+            ),
+        },
+      ),
+      actions: switch (_phase) {
+        _Phase.checking || _Phase.working || _Phase.restoring => [],
+        _Phase.needsRecoveryKey => [
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text('Cancel'),
+            ),
+            ElevatedButton(
+              onPressed: _unlockWithRecoveryKey,
+              child: const Text('Unlock'),
+            ),
+          ],
+        _Phase.showRecoveryKey => [
+            TextButton(
+              onPressed: () {
+                Clipboard.setData(
+                    ClipboardData(text: _recoveryKey ?? ''));
+                ScaffoldMessenger.of(context).showSnackBar(
+                  const SnackBar(
+                      content: Text('Recovery key copied to clipboard')),
+                );
+              },
+              child: const Text('Copy'),
+            ),
+            ElevatedButton(
+              onPressed: () async {
+                await _restoreKeys();
+              },
+              child: const Text('I saved it, continue'),
+            ),
+          ],
+        _Phase.done => [
+            ElevatedButton(
+              onPressed: () => Navigator.of(context).pop(true),
+              child: const Text('Done'),
+            ),
+          ],
+        _Phase.error => [
+            TextButton(
+              onPressed: () {
+                setState(() => _phase = _Phase.needsRecoveryKey);
+              },
+              child: const Text('Try again'),
+            ),
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text('Close'),
+            ),
+          ],
+      },
+    );
+  }
+}

lib/features/rooms/data/rooms_repository.dart

@@ -1,4 +1,4 @@
-// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-04-02
+// Version: 1.3.0 | Created: 2026-04-01 | Updated: 2026-04-27
 // Rooms repository. Reads room list from the Matrix SDK client.
 
 import 'package:matrix/matrix.dart';

lib/features/rooms/presentation/public_rooms_dialog.dart

@@ -0,0 +1,225 @@
+// Version: 1.0.0 | Created: 2026-04-27
+// Public room browser — search Matrix room directory and join rooms.
+
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+import 'package:matrix/matrix_api_lite.dart'
+    show PublicRoomQueryFilter, PublicRoomsChunk;
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+import '../../../core/network/matrix_client.dart';
+import '../../../shared/widgets/matrix_avatar.dart';
+
+part 'public_rooms_dialog.g.dart';
+
+@riverpod
+Future<List<PublicRoomsChunk>> publicRooms(
+    Ref ref, String searchTerm) async {
+  final client = ref.watch(matrixClientProvider);
+  final filter = searchTerm.trim().isEmpty
+      ? null
+      : PublicRoomQueryFilter(genericSearchTerm: searchTerm.trim());
+
+  final response = await client.queryPublicRooms(
+    filter: filter,
+    limit: 30,
+  );
+  return response.chunk;
+}
+
+Future<void> showPublicRoomsDialog(BuildContext context) {
+  return showDialog<void>(
+    context: context,
+    builder: (_) => const _PublicRoomsDialog(),
+  );
+}
+
+class _PublicRoomsDialog extends ConsumerStatefulWidget {
+  const _PublicRoomsDialog();
+
+  @override
+  ConsumerState<_PublicRoomsDialog> createState() =>
+      _PublicRoomsDialogState();
+}
+
+class _PublicRoomsDialogState extends ConsumerState<_PublicRoomsDialog> {
+  final _controller = TextEditingController();
+  String _searchTerm = '';
+  Timer? _debounce;
+  String? _joiningRoomId;
+
+  @override
+  void dispose() {
+    _debounce?.cancel();
+    _controller.dispose();
+    super.dispose();
+  }
+
+  void _onSearchChanged(String val) {
+    _debounce?.cancel();
+    _debounce = Timer(const Duration(milliseconds: 450), () {
+      if (mounted) setState(() => _searchTerm = val);
+    });
+  }
+
+  Future<void> _join(PublicRoomsChunk room) async {
+    if (_joiningRoomId != null) return;
+    setState(() => _joiningRoomId = room.roomId);
+
+    try {
+      final client = ref.read(matrixClientProvider);
+      await client.joinRoom(room.canonicalAlias ?? room.roomId);
+      if (!mounted) return;
+      Navigator.of(context).pop();
+      context.push('/rooms/${Uri.encodeComponent(room.roomId)}');
+    } on Exception catch (e) {
+      if (!mounted) return;
+      setState(() => _joiningRoomId = null);
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('Could not join room: $e')),
+      );
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final roomsAsync = ref.watch(publicRoomsProvider(_searchTerm));
+
+    return Dialog(
+      insetPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 32),
+      child: ConstrainedBox(
+        constraints: const BoxConstraints(maxWidth: 520, maxHeight: 600),
+        child: Column(
+          children: [
+            // Header
+            Padding(
+              padding: const EdgeInsets.fromLTRB(16, 16, 4, 0),
+              child: Row(
+                children: [
+                  Text(
+                    'Find rooms',
+                    style: theme.textTheme.titleMedium?.copyWith(
+                      fontWeight: FontWeight.w600,
+                    ),
+                  ),
+                  const Spacer(),
+                  IconButton(
+                    icon: const Icon(Icons.close),
+                    onPressed: () => Navigator.of(context).pop(),
+                  ),
+                ],
+              ),
+            ),
+
+            // Search
+            Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+              child: TextField(
+                controller: _controller,
+                autofocus: true,
+                decoration: const InputDecoration(
+                  hintText: 'Search public rooms...',
+                  prefixIcon: Icon(Icons.search),
+                ),
+                onChanged: _onSearchChanged,
+              ),
+            ),
+
+            // Results
+            Flexible(
+              child: roomsAsync.when(
+                loading: () =>
+                    const Center(child: CircularProgressIndicator()),
+                error: (err, _) => Padding(
+                  padding: const EdgeInsets.all(16),
+                  child: Text('Search failed: $err'),
+                ),
+                data: (rooms) {
+                  if (rooms.isEmpty) {
+                    return Padding(
+                      padding: const EdgeInsets.all(24),
+                      child: Text(
+                        _searchTerm.isEmpty
+                            ? 'No public rooms found.'
+                            : 'No rooms match "$_searchTerm".',
+                        textAlign: TextAlign.center,
+                        style: theme.textTheme.bodySmall?.copyWith(
+                          color: theme.colorScheme.onSurface.withAlpha(102),
+                        ),
+                      ),
+                    );
+                  }
+
+                  return ListView.separated(
+                    shrinkWrap: true,
+                    itemCount: rooms.length,
+                    separatorBuilder: (_, __) =>
+                        const Divider(height: 1, indent: 72),
+                    itemBuilder: (context, index) {
+                      final room = rooms[index];
+                      final name = room.name ??
+                          room.canonicalAlias ??
+                          room.roomId;
+                      final isJoining = _joiningRoomId == room.roomId;
+
+                      return ListTile(
+                        leading: MatrixAvatar(
+                          name: name,
+                          avatarUrl: room.avatarUrl?.toString(),
+                          radius: 20,
+                        ),
+                        title: Text(
+                          name,
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                        subtitle: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          mainAxisSize: MainAxisSize.min,
+                          children: [
+                            if (room.topic != null)
+                              Text(
+                                room.topic!,
+                                maxLines: 1,
+                                overflow: TextOverflow.ellipsis,
+                                style: theme.textTheme.bodySmall,
+                              ),
+                            Text(
+                              '${room.numJoinedMembers} member'
+                              '${room.numJoinedMembers == 1 ? '' : 's'}',
+                              style: theme.textTheme.bodySmall?.copyWith(
+                                color: theme.colorScheme.onSurface
+                                    .withAlpha(120),
+                              ),
+                            ),
+                          ],
+                        ),
+                        isThreeLine: room.topic != null,
+                        trailing: isJoining
+                            ? const SizedBox(
+                                width: 20,
+                                height: 20,
+                                child: CircularProgressIndicator(
+                                    strokeWidth: 2),
+                              )
+                            : OutlinedButton(
+                                onPressed: _joiningRoomId != null
+                                    ? null
+                                    : () => _join(room),
+                                child: const Text('Join'),
+                              ),
+                      );
+                    },
+                  );
+                },
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/rooms/presentation/room_tile.dart

@@ -1,9 +1,10 @@
-// Version: 1.1.0 | Created: 2026-04-01 | Updated: 2026-04-02
-// Individual room list tile. Kept under 100 lines.
+// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-07-04
+// Individual room list tile. Kept under 120 lines.
 
 import 'package:flutter/material.dart';
 import 'package:timeago/timeago.dart' as timeago;
 
+import '../../../app/theme.dart';
 import '../../../shared/widgets/matrix_avatar.dart';
 import '../domain/room_model.dart';
 
@@ -19,6 +20,8 @@ class RoomTile extends StatelessWidget {
     final hasUnread = room.unreadCount > 0;
 
     return ListTile(
+      visualDensity: VisualDensity.compact,
+      contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
       leading: MatrixAvatar(
         name: room.displayName,
         avatarUrl: room.avatarUrl,
@@ -38,12 +41,15 @@ class RoomTile extends StatelessWidget {
               maxLines: 1,
               overflow: TextOverflow.ellipsis,
               style: theme.textTheme.bodySmall?.copyWith(
-                color: theme.colorScheme.onSurface.withAlpha(153),
+                color: hasUnread
+                    ? theme.colorScheme.onSurface.withAlpha(230)
+                    : M8Colours.subtleText,
+                fontWeight: hasUnread ? FontWeight.w500 : FontWeight.normal,
               ),
             )
           : null,
       trailing: Column(
-        mainAxisAlignment: MainAxisAlignment.center,
+        mainAxisAlignment: MainAxisAlignment.spaceBetween,
         crossAxisAlignment: CrossAxisAlignment.end,
         children: [
           if (room.lastActivityAt != null)
@@ -52,13 +58,14 @@ class RoomTile extends StatelessWidget {
               style: theme.textTheme.labelSmall?.copyWith(
                 color: hasUnread
                     ? theme.colorScheme.primary
-                    : theme.colorScheme.onSurface.withAlpha(102),
+                    : M8Colours.subtleText,
               ),
             ),
           if (hasUnread) ...[
             const SizedBox(height: 4),
             _UnreadBadge(count: room.unreadCount),
-          ],
+          ] else
+            const SizedBox(height: 8),
         ],
       ),
       onTap: onTap,

lib/features/rooms/presentation/rooms_screen.dart

@@ -1,12 +1,21 @@
-// Version: 1.1.0 | Created: 2026-04-01
+// Version: 1.7.0 | Created: 2026-04-01 | Updated: 2026-07-04
 // Main rooms list screen with bottom navigation.
 
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
+import 'dart:async';
+
+import '../../../app/theme.dart';
+import '../../../core/network/matrix_client.dart';
+import '../../help/presentation/help_tab.dart';
+import '../../panic/presentation/panic_button.dart';
+import '../../jitsi/presentation/conference_tab.dart';
+import '../../profile/presentation/key_restore_prompt.dart';
 import '../../profile/presentation/profile_screen.dart';
 import '../../spaces/presentation/spaces_screen.dart';
+import 'public_rooms_dialog.dart';
 import 'room_tile.dart';
 import 'rooms_controller.dart';
 import 'user_search_dialog.dart';
@@ -20,6 +29,36 @@ class RoomsScreen extends ConsumerStatefulWidget {
 
 class _RoomsScreenState extends ConsumerState<RoomsScreen> {
   int _selectedIndex = 0;
+  bool _searchActive = false;
+  String _searchQuery = '';
+  final _searchController = TextEditingController();
+
+  @override
+  void initState() {
+    super.initState();
+    // Offer encrypted-history restore right after login (fires once).
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
+      final client = ref.read(matrixClientProvider);
+      unawaited(maybePromptKeyRestore(context, client));
+    });
+  }
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    super.dispose();
+  }
+
+  void _toggleSearch() {
+    setState(() {
+      _searchActive = !_searchActive;
+      if (!_searchActive) {
+        _searchQuery = '';
+        _searchController.clear();
+      }
+    });
+  }
 
   static const _destinations = [
     NavigationDestination(
@@ -37,13 +76,25 @@ class _RoomsScreenState extends ConsumerState<RoomsScreen> {
       selectedIcon: Icon(Icons.person),
       label: 'Profile',
     ),
+    NavigationDestination(
+      icon: Icon(Icons.videocam_outlined),
+      selectedIcon: Icon(Icons.videocam),
+      label: 'Conference',
+    ),
+    NavigationDestination(
+      icon: Icon(Icons.help_outline),
+      selectedIcon: Icon(Icons.help),
+      label: 'Help',
+    ),
   ];
 
   Widget _buildBody() {
     return switch (_selectedIndex) {
-      0 => const _RoomListBody(),
+      0 => _RoomListBody(searchQuery: _searchQuery),
       1 => const SpacesScreen(embedded: true),
       2 => const ProfileScreen(embedded: true),
+      3 => const ConferenceTab(),
+      4 => const HelpTab(),
       _ => const _RoomListBody(),
     };
   }
@@ -53,24 +104,42 @@ class _RoomsScreenState extends ConsumerState<RoomsScreen> {
     return Scaffold(
       appBar: _selectedIndex == 0
           ? AppBar(
-              title: const Text('M8Chat'),
+              title: _searchActive
+                  ? TextField(
+                      controller: _searchController,
+                      autofocus: true,
+                      decoration: const InputDecoration(
+                        hintText: 'Search rooms...',
+                        border: InputBorder.none,
+                      ),
+                      onChanged: (v) => setState(() => _searchQuery = v),
+                    )
+                  : const Text('M8Chat'),
               actions: [
+                const PanicButton(),
                 IconButton(
-                  icon: const Icon(Icons.search),
-                  tooltip: 'Search rooms',
-                  onPressed: () {
-                    // Phase 2: room search
-                  },
-                ),
-                IconButton(
-                  icon: const Icon(Icons.edit_square),
-                  tooltip: 'New message',
-                  onPressed: () => showUserSearchDialog(context),
+                  icon: Icon(_searchActive ? Icons.close : Icons.search),
+                  tooltip: _searchActive ? 'Cancel search' : 'Search rooms',
+                  onPressed: _toggleSearch,
                 ),
+                if (!_searchActive)
+                  IconButton(
+                    icon: const Icon(Icons.explore_outlined),
+                    tooltip: 'Find rooms',
+                    onPressed: () => showPublicRoomsDialog(context),
+                  ),
               ],
             )
           : null,
       body: _buildBody(),
+      floatingActionButton: _selectedIndex == 0 && !_searchActive
+          ? FloatingActionButton.extended(
+              onPressed: () => showUserSearchDialog(context),
+              tooltip: 'New message',
+              icon: const Icon(Icons.edit_square),
+              label: const Text('New message'),
+            )
+          : null,
       bottomNavigationBar: NavigationBar(
         selectedIndex: _selectedIndex,
         onDestinationSelected: (index) =>
@@ -82,7 +151,9 @@ class _RoomsScreenState extends ConsumerState<RoomsScreen> {
 }
 
 class _RoomListBody extends ConsumerWidget {
-  const _RoomListBody();
+  const _RoomListBody({this.searchQuery = ''});
+
+  final String searchQuery;
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
@@ -118,14 +189,39 @@ class _RoomListBody extends ConsumerWidget {
         ),
       ),
       data: (rooms) {
-        if (rooms.isEmpty) {
-          return const _EmptyRoomsState();
+        final filtered = searchQuery.trim().isEmpty
+            ? rooms
+            : rooms
+                .where((r) => r.displayName
+                    .toLowerCase()
+                    .contains(searchQuery.trim().toLowerCase()))
+                .toList();
+
+        if (filtered.isEmpty) {
+          return searchQuery.isNotEmpty
+              ? Center(
+                  child: Padding(
+                    padding: const EdgeInsets.all(32),
+                    child: Text(
+                      'No rooms match "$searchQuery".',
+                      textAlign: TextAlign.center,
+                      style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+                            color: Theme.of(context)
+                                .colorScheme
+                                .onSurface
+                                .withAlpha(153),
+                          ),
+                    ),
+                  ),
+                )
+              : const _EmptyRoomsState();
         }
+
         return ListView.separated(
-          itemCount: rooms.length,
+          itemCount: filtered.length,
           separatorBuilder: (_, __) => const Divider(height: 1, indent: 72),
           itemBuilder: (context, index) {
-            final room = rooms[index];
+            final room = filtered[index];
             return RoomTile(
               room: room,
               onTap: () =>
@@ -159,16 +255,24 @@ class _EmptyRoomsState extends StatelessWidget {
             Text(
               'No rooms yet',
               style: theme.textTheme.titleMedium?.copyWith(
-                color: theme.colorScheme.onSurface.withAlpha(153),
+                color: M8Colours.subtleText,
               ),
             ),
             const SizedBox(height: 8),
             Text(
-              'Rooms you join will appear here.',
+              'Tap the New message button to message someone, or find '
+              'a public room to join.',
+              textAlign: TextAlign.center,
               style: theme.textTheme.bodySmall?.copyWith(
-                color: theme.colorScheme.onSurface.withAlpha(102),
+                color: M8Colours.subtleText,
               ),
             ),
+            const SizedBox(height: 20),
+            OutlinedButton.icon(
+              onPressed: () => showPublicRoomsDialog(context),
+              icon: const Icon(Icons.explore_outlined),
+              label: const Text('Find rooms'),
+            ),
           ],
         ),
       ),

lib/main.dart

@@ -1,15 +1,33 @@
-// Version: 1.0.1 | Created: 2026-04-01
+// Version: 1.2.0 | Created: 2026-04-01 | Updated: 2026-04-27
 // Application entry point.
 
+import 'dart:async';
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:olm/olm.dart' as olm;
 
 import 'app/app.dart';
+import 'core/push/web_push_service.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
+  // Check Olm availability — this prints to the browser console.
+  try {
+    await olm.init();
+    debugPrint('[M8Chat] Olm initialized successfully: ${olm.get_library_version()}');
+  } catch (e) {
+    debugPrint('[M8Chat] Olm NOT available: $e');
+  }
+
+  // Register the push service worker at startup so the browser knows about it.
+  // The actual push subscription happens after login (in auth_notifier.dart).
+  if (kIsWeb) {
+    unawaited(registerPushServiceWorker());
+  }
+
   // Catch Flutter framework errors (widget build, rendering) without crashing.
   FlutterError.onError = (details) {
     debugPrint('[M8Chat] Flutter error: ${details.exceptionAsString()}');

lib/shared/utils/mxc_url.dart

@@ -1,28 +1,32 @@
-// Version: 1.0.0 | Created: 2026-04-02
+// Version: 2.0.0 | Created: 2026-04-02 | Updated: 2026-04-11
 // Synchronous MXC URI to HTTP URL resolution.
-// Avatars and thumbnails in the room list / sync service need a resolved HTTP
-// URL. The Matrix SDK's getDownloadUri() is async (checks authenticated media
-// support), but for avatar display we need a synchronous result.
 //
-// This helper builds the legacy v3 media URL which works on all homeservers.
+// Synapse 1.120+ requires authenticated media downloads. The old
+// /_matrix/media/v3/download/ endpoint is frozen and returns 404.
+// We use /_matrix/client/v1/media/download/ with the access token.
 
 import 'package:matrix/matrix.dart';
 
-/// Resolves an `mxc://` [Uri] to an HTTP download URL using the client's
-/// homeserver. Returns `null` if the URI is not an mxc scheme or the client
-/// has no homeserver set.
-///
-/// This is synchronous — suitable for use in non-async model mapping.
+/// Resolves an `mxc://` [Uri] to an authenticated HTTP download URL.
+/// Returns `null` if the URI is not mxc:// or the client is not connected.
 String? resolveMxcUrl(Client client, Uri? mxcUri) {
   if (mxcUri == null || !mxcUri.isScheme('mxc')) return null;
   final homeserver = client.homeserver;
   if (homeserver == null) return null;
 
-  // Build the media download path per the Matrix spec.
   final serverName = mxcUri.host;
   final port = mxcUri.hasPort ? ':${mxcUri.port}' : '';
   final mediaId = mxcUri.path; // includes leading /
-  return homeserver
-      .resolve('_matrix/media/v3/download/$serverName$port$mediaId')
+
+  // Use the authenticated media endpoint (MSC3916).
+  final base = homeserver
+      .resolve('_matrix/client/v1/media/download/$serverName$port$mediaId')
       .toString();
+
+  // Append the access token so CachedNetworkImage / Image.network can
+  // fetch without custom headers. The token is already in the browser's
+  // JS memory so this doesn't expand the attack surface.
+  final token = client.accessToken;
+  if (token == null) return base;
+  return '$base?access_token=$token';
 }

lib/shared/utils/room_preview.dart

@@ -1,4 +1,4 @@
-// Version: 1.0.0 | Created: 2026-04-02
+// Version: 1.1.1 | Created: 2026-04-02 | Updated: 2026-07-03
 // Shared utility for generating a last-message preview string from a Room.
 // Used by both RoomsRepository and SyncPersistenceService to avoid duplication.
 
@@ -12,7 +12,7 @@ String? lastMessagePreview(Room room) {
 
   return switch (lastEvent.type) {
     EventTypes.Message => lastEvent.body,
-    EventTypes.Encrypted => 'Encrypted message',
+    EventTypes.Encrypted => '\u{1F512} Encrypted. Use Element to read',
     EventTypes.Sticker => 'Sticker',
     _ => null,
   };

lib/shared/widgets/matrix_avatar.dart

@@ -1,7 +1,8 @@
-// Version: 1.0.0 | Created: 2026-04-02
+// Version: 1.1.0 | Created: 2026-04-02 | Updated: 2026-07-04
 // Shared avatar widget used throughout the app. Displays a cached network
-// image when an HTTP avatar URL is available, or falls back to a coloured
-// circle with the first letter of the display name.
+// image when an HTTP avatar URL is available, or falls back to a circle
+// coloured deterministically from the display name (so each person gets a
+// stable, distinct disc) with the first letter of the display name.
 //
 // The [avatarUrl] MUST be a resolved HTTP URL — never pass an mxc:// URI.
 
@@ -25,6 +26,21 @@ class MatrixAvatar extends StatelessWidget {
   /// Radius of the [CircleAvatar].
   final double radius;
 
+  /// Brand-compatible hues for initials avatars. All dark enough for white
+  /// initials to remain legible.
+  static const List<Color> _palette = [
+    Color(0xFF1265ED), // brand blue
+    Color(0xFF2E7DE0), // sky
+    Color(0xFF1E88A8), // teal
+    Color(0xFF3949AB), // indigo
+    Color(0xFF6A4CC0), // violet
+    Color(0xFF00897B), // green-teal
+    Color(0xFF5C6BC0), // periwinkle
+    Color(0xFFB1631F), // warm amber
+  ];
+
+  Color get _discColour => _palette[name.hashCode.abs() % _palette.length];
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
@@ -40,13 +56,13 @@ class MatrixAvatar extends StatelessWidget {
 
     return CircleAvatar(
       radius: radius,
-      backgroundColor: theme.colorScheme.primary.withAlpha(51),
+      backgroundColor: _discColour,
       child: Text(
         initials,
         style: TextStyle(
           fontSize: radius * 0.7,
           fontWeight: FontWeight.bold,
-          color: theme.colorScheme.primary,
+          color: Colors.white,
         ),
       ),
     );

pubspec.yaml

@@ -1,7 +1,7 @@
 name: m8chat_app
 description: "M8Chat — Matrix chat client for Android, iOS, and Web."
 publish_to: 'none'
-version: 1.1.0+2
+version: 1.11.0+15
 
 environment:
   sdk: '>=3.11.0 <4.0.0'
@@ -12,6 +12,7 @@ dependencies:
 
   # Matrix SDK
   matrix: ^0.33.0
+  olm: ^2.0.4
 
   # State management
   flutter_riverpod: ^3.0.0
@@ -42,6 +43,9 @@ dependencies:
   # Emoji reactions
   emoji_picker_flutter: ^4.0.0
 
+  # Web platform (required for dart:js_interop DOM access)
+  web: ^1.1.0
+
   # UI
   cached_network_image: ^3.4.0
   timeago: ^3.7.0

test/history_pagination_test.dart

@@ -0,0 +1,104 @@
+// Version: 1.0.0 | Created: 2026-07-04
+// Verifies the chat timeline requests older history when scrolled near the
+// top (oldest end) of the reverse list. Driven through the real widget tree
+// with a fake repository, since Playwright cannot scroll the CanvasKit surface.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:matrix/matrix.dart';
+
+import 'package:m8chat_app/core/network/matrix_client.dart';
+import 'package:m8chat_app/features/chat/data/chat_repository.dart';
+import 'package:m8chat_app/features/chat/domain/message_model.dart';
+import 'package:m8chat_app/features/chat/presentation/chat_controller.dart';
+import 'package:m8chat_app/features/chat/presentation/chat_screen.dart';
+
+class _FakeChatRepository extends ChatRepository {
+  _FakeChatRepository() : super(client: Client('test-client'));
+
+  int loadMoreCalls = 0;
+  bool _hasMore = true;
+
+  @override
+  bool canLoadMore(String roomId) => _hasMore;
+
+  @override
+  Future<void> loadMoreMessages(String roomId) async {
+    loadMoreCalls++;
+    _hasMore = false; // one page then exhausted
+  }
+}
+
+void main() {
+  testWidgets('scrolling to the top requests older history once', (
+    tester,
+  ) async {
+    const roomId = '!paginate:server';
+    final base = DateTime(2026, 7, 4, 8);
+    final messages = [
+      for (var i = 40; i >= 1; i--)
+        MessageModel(
+          eventId: '\$e$i',
+          roomId: roomId,
+          senderId: '@me:server',
+          senderDisplayName: 'Me',
+          timestamp: base.add(Duration(seconds: i)),
+          type: MessageType.text,
+          body: 'Message $i',
+          isMine: true,
+        ),
+    ];
+
+    final repo = _FakeChatRepository();
+
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [
+          matrixClientProvider.overrideWithValue(Client('test-client')),
+          chatRepositoryProvider.overrideWithValue(repo),
+          chatTimelineProvider(
+            roomId,
+          ).overrideWith((ref) => Stream.value(messages)),
+        ],
+        child: const MaterialApp(home: ChatScreen(roomId: roomId)),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(repo.loadMoreCalls, 0);
+
+    // Confirm the override is actually in effect.
+    final container = ProviderScope.containerOf(
+      tester.element(find.byType(ChatScreen)),
+    );
+    expect(identical(container.read(chatRepositoryProvider), repo), isTrue);
+
+    double offset() => tester
+        .state<ScrollableState>(find.byType(Scrollable).first)
+        .position
+        .pixels;
+    double maxExtent() => tester
+        .state<ScrollableState>(find.byType(Scrollable).first)
+        .position
+        .maxScrollExtent;
+
+    // Scroll up toward the oldest end (reverse list: drag content down).
+    await tester.drag(find.byType(ListView), const Offset(0, 3000));
+    await tester.pumpAndSettle();
+
+    expect(
+      offset(),
+      greaterThan(maxExtent() - 400),
+      reason:
+          'drag should have reached the oldest end (offset=${offset()}, '
+          'max=${maxExtent()})',
+    );
+
+    expect(
+      repo.loadMoreCalls,
+      greaterThan(0),
+      reason: 'reaching the top should request older history',
+    );
+  });
+}

test/scroll_to_latest_test.dart

@@ -0,0 +1,80 @@
+// Version: 1.0.0 | Created: 2026-07-04
+// Deterministic test for the chat timeline's scroll-to-latest button.
+// Playwright cannot drive scrolling on the Flutter CanvasKit surface, so the
+// jump-to-latest behaviour is verified here against the real widget tree.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:matrix/matrix.dart';
+
+import 'package:m8chat_app/core/network/matrix_client.dart';
+import 'package:m8chat_app/features/chat/domain/message_model.dart';
+import 'package:m8chat_app/features/chat/presentation/chat_controller.dart';
+import 'package:m8chat_app/features/chat/presentation/chat_screen.dart';
+
+void main() {
+  testWidgets(
+    'jump-to-latest button appears when scrolled up and returns to bottom',
+    (tester) async {
+      const roomId = '!scrolltest:server';
+      final base = DateTime(2026, 7, 4, 8);
+      // Index 0 is the newest message (the timeline stream is newest-first).
+      final messages = [
+        for (var i = 40; i >= 1; i--)
+          MessageModel(
+            eventId: '\$e$i',
+            roomId: roomId,
+            senderId: '@me:server',
+            senderDisplayName: 'Me',
+            timestamp: base.add(Duration(seconds: i)),
+            type: MessageType.text,
+            body: 'Message $i',
+            isMine: true,
+          ),
+      ];
+
+      await tester.pumpWidget(
+        ProviderScope(
+          overrides: [
+            matrixClientProvider.overrideWithValue(Client('test-client')),
+            chatTimelineProvider(
+              roomId,
+            ).overrideWith((ref) => Stream.value(messages)),
+          ],
+          child: const MaterialApp(home: ChatScreen(roomId: roomId)),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      final listView = find.byType(ListView);
+      expect(listView, findsOneWidget);
+
+      double offset() =>
+          tester.state<ScrollableState>(find.byType(Scrollable).first)
+              .position
+              .pixels;
+
+      // Starts pinned to the newest message (offset 0 in a reverse list).
+      expect(offset(), 0);
+
+      // Scroll up toward older messages (reverse list: drag content down).
+      await tester.drag(listView, const Offset(0, 900));
+      await tester.pumpAndSettle();
+      expect(
+        offset(),
+        greaterThan(400),
+        reason: 'should have scrolled well past the button threshold',
+      );
+
+      // The jump-to-latest button is now shown; tap it.
+      final jumpButton = find.byIcon(Icons.arrow_downward);
+      expect(jumpButton, findsOneWidget);
+      await tester.tap(jumpButton);
+      await tester.pumpAndSettle();
+
+      // Back at the newest message.
+      expect(offset(), 0);
+    },
+  );
+}

web/.htaccess

@@ -0,0 +1,15 @@
+# Required for SharedArrayBuffer — needed by LiveKit E2EE frame encryption.
+# Without COOP+COEP, the LiveKit E2EE web worker cannot be created.
+<IfModule mod_headers.c>
+  Header set Cross-Origin-Opener-Policy "same-origin"
+  Header set Cross-Origin-Embedder-Policy "require-corp"
+</IfModule>
+
+# Flutter HTML5 routing — all unknown paths serve index.html
+Options -Indexes
+RewriteEngine On
+
+RewriteCond %{REQUEST_FILENAME} !-f
+RewriteCond %{REQUEST_FILENAME} !-d
+
+RewriteRule ^(.*)$ /index.html [L,QSA]

web/index.html

@@ -18,12 +18,12 @@
 
   <meta charset="UTF-8">
   <meta content="IE=Edge" http-equiv="X-UA-Compatible">
-  <meta name="description" content="A new Flutter project.">
+  <meta name="description" content="M8Chat — secure chat and conferencing.">
 
   <!-- iOS meta tags & icons -->
   <meta name="mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-status-bar-style" content="black">
-  <meta name="apple-mobile-web-app-title" content="m8chat_app">
+  <meta name="apple-mobile-web-app-title" content="M8Chat">
   <link rel="apple-touch-icon" href="icons/Icon-192.png">
 
   <!-- Favicon -->
@@ -49,12 +49,43 @@
     }
   </script>
   <!--
-    Olm (E2EE) disabled for Phase 1 web builds. The Matrix SDK gracefully
-    skips encryption when Olm is not loaded — unencrypted rooms work fine.
-    E2EE requires persistent Olm account storage (IndexedDB) to avoid
-    device key conflicts on /keys/upload (400). Deferred to Phase 3.
-    The olm.js and olm.wasm files remain deployed for future use.
+    Olm (E2EE): load olm.js synchronously, await Olm.init() for WASM, THEN
+    inject flutter_bootstrap.js so the Matrix SDK finds global Olm ready.
+    If Olm fails to load (e.g. WASM blocked by browser), Flutter boots anyway
+    without encryption — unencrypted rooms still work.
   -->
-  <script src="flutter_bootstrap.js" async></script>
+  <script src="olm.js"></script>
+  <script>
+    (function() {
+      function bootFlutter() {
+        var s = document.createElement('script');
+        s.src = 'flutter_bootstrap.js';
+        s.async = true;
+        document.body.appendChild(s);
+      }
+      // Ensure Olm is accessible on both window and globalThis.
+      // dart2js may resolve bare 'Olm' via different global references.
+      if (typeof Olm !== 'undefined') {
+        window.Olm = Olm;
+        if (typeof globalThis !== 'undefined') globalThis.Olm = Olm;
+        if (typeof self !== 'undefined') self.Olm = Olm;
+      }
+      if (typeof Olm !== 'undefined' && Olm.init) {
+        console.log('[M8Chat] Olm.js loaded, calling Olm.init()...');
+        Olm.init().then(function() {
+          console.log('[M8Chat] Olm.init() SUCCESS — E2EE available');
+          console.log('[M8Chat] window.Olm =', window.Olm);
+          console.log('[M8Chat] typeof Olm.Account =', typeof Olm.Account);
+          bootFlutter();
+        }).catch(function(e) {
+          console.warn('[M8Chat] Olm init FAILED, booting without E2EE:', e);
+          bootFlutter();
+        });
+      } else {
+        console.warn('[M8Chat] olm.js did NOT load — typeof Olm =', typeof Olm);
+        bootFlutter();
+      }
+    })();
+  </script>
 </body>
 </html>

web/manifest.json

@@ -1,11 +1,11 @@
 {
-    "name": "m8chat_app",
-    "short_name": "m8chat_app",
+    "name": "M8Chat",
+    "short_name": "M8Chat",
     "start_url": ".",
     "display": "standalone",
-    "background_color": "#0175C2",
-    "theme_color": "#0175C2",
-    "description": "A new Flutter project.",
+    "background_color": "#0A0F2E",
+    "theme_color": "#1265ED",
+    "description": "M8Chat — secure chat and conferencing.",
     "orientation": "portrait-primary",
     "prefer_related_applications": false,
     "icons": [

web/push_sw.js

@@ -0,0 +1,64 @@
+// Version: 1.0.0 | Created: 2026-04-27
+// Web Push service worker for M8Chat.
+// Receives push events from the browser and shows system notifications.
+// This script is registered separately from flutter_service_worker.js.
+
+'use strict';
+
+self.addEventListener('push', function (event) {
+  if (!event.data) return;
+
+  let data = {};
+  try {
+    data = event.data.json();
+  } catch (_) {
+    data = { notification: { body: event.data.text() } };
+  }
+
+  // Sygnal delivers: { notification: { content: { body, msgtype, ... }, room_name, sender_display_name, ... } }
+  const notif = data.notification || {};
+  const content = notif.content || {};
+
+  const sender = notif.sender_display_name || notif.sender || 'M8Chat';
+  const room = notif.room_name || notif.room_alias || '';
+  const body = content.body || notif.body || 'New message';
+
+  const title = room ? `${sender} in ${room}` : sender;
+
+  const options = {
+    body: body,
+    icon: '/icons/Icon-192.png',
+    badge: '/icons/Icon-192.png',
+    tag: notif.room_id || 'm8chat',
+    data: {
+      roomId: notif.room_id,
+      url: self.location.origin + (notif.room_id
+        ? '/rooms/' + encodeURIComponent(notif.room_id)
+        : '/rooms'),
+    },
+    requireInteraction: false,
+  };
+
+  event.waitUntil(self.registration.showNotification(title, options));
+});
+
+self.addEventListener('notificationclick', function (event) {
+  event.notification.close();
+
+  const url = (event.notification.data && event.notification.data.url)
+    ? event.notification.data.url
+    : self.location.origin + '/rooms';
+
+  event.waitUntil(
+    clients.matchAll({ type: 'window', includeUncontrolled: true }).then(function (clientList) {
+      for (const client of clientList) {
+        if (client.url === url && 'focus' in client) {
+          return client.focus();
+        }
+      }
+      if (clients.openWindow) {
+        return clients.openWindow(url);
+      }
+    })
+  );
+});