fix

lib/features/notifications/presentation/providers/notification_provider.dart

@@ -42,6 +42,16 @@ class UnreadCountNotifier extends StateNotifier<int> {
     }
   }
 
+  /// Set count to zero immediately (optimistic update).
+  void setZero() {
+    if (mounted) state = 0;
+  }
+
+  /// Decrement count by 1 (optimistic update for single mark-as-read).
+  void decrement() {
+    if (mounted && state > 0) state = state - 1;
+  }
+
   /// Stop polling (call on logout).
   void stopPolling() {
     _timer?.cancel();
@@ -164,18 +174,24 @@ class NotificationListNotifier extends StateNotifier<NotificationListState> {
           return n;
         }).toList(),
       );
-      _ref.read(unreadCountProvider.notifier).refresh();
+      // Decrement count immediately, then sync with server
+      final countNotifier = _ref.read(unreadCountProvider.notifier);
+      countNotifier.decrement();
     } catch (_) {}
   }
 
   Future<void> markAllAsRead() async {
     try {
+      // Set count to 0 immediately for instant UI feedback
+      _ref.read(unreadCountProvider.notifier).setZero();
       await _repo.markAllAsRead();
       state = state.copyWith(
         notifications:
             state.notifications.map((n) => n.copyWith(read: true)).toList(),
       );
+    } catch (_) {
+      // If API fails, refresh from server to get correct count
       _ref.read(unreadCountProvider.notifier).refresh();
-    } catch (_) {}
+    }
   }
 }