implemented a central haptic feedback system with configurable levels (off, reduced, full), added a Haptics facade providing semantic feedback methods, integrated haptic cues across navigation, settings toggles, and async action results, and updated version to 1.1.0+54

lib/app.dart

@@ -23,6 +23,7 @@ import 'state/app/modules/timetable/bloc/timetable_bloc.dart';
 import 'state/app/modules/timetable/bloc/timetable_state.dart';
 import 'storage/settings.dart' as model;
 import 'utils/debouncer.dart';
+import 'utils/haptics.dart';
 import 'view/pages/overhang.dart';
 import 'widget/breaker/breaker.dart';
 import 'widget_data/widget_navigation.dart';
@@ -42,13 +43,19 @@ class _AppState extends State<App> with WidgetsBindingObserver {
   StreamSubscription<RemoteMessage>? _onMessageOpenedAppSub;
   StreamSubscription<String>? _fcmTokenRefreshSub;
   int _knownTotalTabs = 1;
+  int _lastTabIndex = 0;
   bool _userOnLastTab = false;
 
   static const Duration _chatListActiveInterval = Duration(seconds: 15);
   static const Duration _chatListIdleInterval = Duration(seconds: 60);
 
   void _onTabControllerChanged() {
-    _userOnLastTab = Main.bottomNavigator.index == _knownTotalTabs - 1;
+    final newIndex = Main.bottomNavigator.index;
+    if (newIndex != _lastTabIndex) {
+      Haptics.selection();
+      _lastTabIndex = newIndex;
+    }
+    _userOnLastTab = newIndex == _knownTotalTabs - 1;
     _syncChatListPolling();
   }
 
@@ -107,7 +114,9 @@ class _AppState extends State<App> with WidgetsBindingObserver {
   @override
   void initState() {
     super.initState();
+    Haptics.bind(context.read<SettingsCubit>());
     Main.bottomNavigator = PersistentTabController(initialIndex: 0);
+    _lastTabIndex = Main.bottomNavigator.index;
     Main.bottomNavigator.addListener(_onTabControllerChanged);
     WidgetsBinding.instance.addObserver(this);
 
@@ -230,6 +239,7 @@ class _AppState extends State<App> with WidgetsBindingObserver {
           Main.bottomNavigator = PersistentTabController(
             initialIndex: targetIndex,
           );
+          _lastTabIndex = targetIndex;
           Main.bottomNavigator.addListener(_onTabControllerChanged);
           _userOnLastTab = targetIndex == totalTabs - 1;
         }