feat: encrypted-history prompt, incoming-call alerts, message edit, panic button (v1.7.0+11)

P1 key_restore_prompt: offer recovery-key restore right after login
P2 incoming calls: mount overlay in app.dart + detect MSC3401 call.member
   (Element X signalling) — calls were previously invisible
P3 message edit: editMessage/EditMessage + Edit dialog (reactions/delete
   were already wired)
P5 panic button: new feature/panic module — hold-to-send alert text +
   m.location to a configured room; alert sent before geolocation so a
   denied permission never blocks it

All verified end-to-end in headless Chromium against production build.

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

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

@@ -1,4 +1,4 @@
-// Version: 1.3.0 | Created: 2026-04-01 | Updated: 2026-04-10
+// Version: 1.4.0 | 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.
 
@@ -73,6 +73,17 @@ 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);

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

@@ -1,4 +1,4 @@
-// Version: 1.3.1 | Created: 2026-04-01 | Updated: 2026-07-03
+// Version: 1.4.0 | 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) + room options sheet.
 
@@ -217,6 +217,12 @@ 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);
@@ -229,6 +235,44 @@ 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,
@@ -437,6 +481,7 @@ class _MessageContextMenu extends StatelessWidget {
     required this.onReply,
     required this.onReact,
     required this.onCopy,
+    this.onEdit,
     this.onDelete,
   });
 
@@ -445,6 +490,7 @@ class _MessageContextMenu extends StatelessWidget {
   final VoidCallback onReply;
   final VoidCallback onReact;
   final VoidCallback onCopy;
+  final VoidCallback? onEdit;
   final VoidCallback? onDelete;
 
   @override
@@ -469,6 +515,12 @@ 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/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 +1,70 @@
+// Version: 1.0.0 | Created: 2026-07-04
+// Panic trigger button for the rooms AppBar. Push-to-talk style:
+// HOLD to fire the alert; a plain tap only shows the hint. Only rendered
+// when a panic configuration exists in account data.
+
+import 'package:flutter/material.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> {
+  bool _sending = false;
+
+  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.',
+        ),
+      ),
+    );
+  }
+
+  @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(
+      onLongPress: _trigger,
+      child: IconButton(
+        tooltip: 'Hold to send emergency alert',
+        icon: _sending
+            ? const SizedBox(
+                width: 20,
+                height: 20,
+                child: CircularProgressIndicator(strokeWidth: 2),
+              )
+            : const Icon(Icons.emergency_share, color: Colors.red),
+        onPressed: () {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(
+              content: Text('Hold the button to send the emergency alert.'),
+            ),
+          );
+        },
+      ),
+    );
+  }
+}

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_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: 1.4.1 | Created: 2026-04-01 | Updated: 2026-07-03
+// 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 +10,8 @@ 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';
 
@@ -147,6 +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/rooms/presentation/rooms_screen.dart

@@ -1,12 +1,17 @@
-// Version: 1.5.0 | Created: 2026-04-01 | Updated: 2026-04-27
+// Version: 1.6.0 | 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 '../../../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';
@@ -27,6 +32,17 @@ class _RoomsScreenState extends ConsumerState<RoomsScreen> {
   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();
@@ -99,6 +115,7 @@ class _RoomsScreenState extends ConsumerState<RoomsScreen> {
                     )
                   : const Text('M8Chat'),
               actions: [
+                const PanicButton(),
                 IconButton(
                   icon: Icon(_searchActive ? Icons.close : Icons.search),
                   tooltip: _searchActive ? 'Cancel search' : 'Search rooms',