Implemented per stream subscription recovery with polling fallback

lib/providers/teams_provider.dart

@@ -1,24 +1,42 @@
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'supabase_provider.dart';
+import 'stream_recovery.dart';
 import '../models/team.dart';
 import '../models/team_member.dart';
 
-/// Real-time stream of teams (keeps UI in sync with DB changes).
+/// Real-time stream of teams with automatic recovery and graceful degradation.
 final teamsProvider = StreamProvider<List<Team>>((ref) {
   final client = ref.watch(supabaseClientProvider);
-  return client
-      .from('teams')
-      .stream(primaryKey: ['id'])
-      .order('name')
-      .map((rows) => rows.map((r) => Team.fromMap(r)).toList());
+
+  final wrapper = StreamRecoveryWrapper<Team>(
+    stream: client.from('teams').stream(primaryKey: ['id']).order('name'),
+    onPollData: () async {
+      final data = await client.from('teams').select().order('name');
+      return data.map(Team.fromMap).toList();
+    },
+    fromMap: Team.fromMap,
+  );
+
+  ref.onDispose(wrapper.dispose);
+  return wrapper.stream.map((result) => result.data);
 });
 
-/// Real-time stream of team membership rows.
+/// Real-time stream of team membership rows with automatic recovery.
 final teamMembersProvider = StreamProvider<List<TeamMember>>((ref) {
   final client = ref.watch(supabaseClientProvider);
-  return client
-      .from('team_members')
-      .stream(primaryKey: ['team_id', 'user_id'])
-      .map((rows) => rows.map((r) => TeamMember.fromMap(r)).toList());
+
+  final wrapper = StreamRecoveryWrapper<TeamMember>(
+    stream: client
+        .from('team_members')
+        .stream(primaryKey: ['team_id', 'user_id']),
+    onPollData: () async {
+      final data = await client.from('team_members').select();
+      return data.map(TeamMember.fromMap).toList();
+    },
+    fromMap: TeamMember.fromMap,
+  );
+
+  ref.onDispose(wrapper.dispose);
+  return wrapper.stream.map((result) => result.data);
 });