realtime controller

lib/services/notification_bridge.dart

@@ -4,6 +4,7 @@ import 'package:firebase_messaging/firebase_messaging.dart';
 
 import '../models/notification_item.dart';
 import '../providers/notifications_provider.dart';
+import '../providers/realtime_controller.dart';
 
 /// Wraps the app and installs both a Supabase realtime listener and the
 /// FCM handlers described in the frontend design.
@@ -24,21 +25,35 @@ class NotificationBridge extends ConsumerStatefulWidget {
   ConsumerState<NotificationBridge> createState() => _NotificationBridgeState();
 }
 
-class _NotificationBridgeState extends ConsumerState<NotificationBridge> {
+class _NotificationBridgeState extends ConsumerState<NotificationBridge>
+    with WidgetsBindingObserver {
   // store previous notifications to diff
   List<NotificationItem> _prevList = [];
 
   @override
   void initState() {
     super.initState();
+    WidgetsBinding.instance.addObserver(this);
     _setupFcmHandlers();
   }
 
   @override
   void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
     super.dispose();
   }
 
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    super.didChangeAppLifecycleState(state);
+    if (state == AppLifecycleState.resumed) {
+      try {
+        // Trigger a best-effort realtime reconnection when the app resumes.
+        ref.read(realtimeControllerProvider).recoverConnection();
+      } catch (_) {}
+    }
+  }
+
   void _showBanner(String type, NotificationItem item) {
     final ctx = widget.navigatorKey.currentState?.overlay?.context;
     if (ctx == null) return;