feat: Implement major features and fix theming bug

This commit introduces several new features and a critical bug fix.

- Implemented a full "Quick Pay" flow for both within and outside the bank, including IFSC validation, beneficiary verification, and a TPIN-based payment process.
- Added a date range filter to the Account Statement screen and streamlined the UI by removing the amount filters.
- Fixed a major bug that prevented dynamic theme changes from being applied. The app now correctly switches between color themes.
- Refactored and improved beneficiary management, transaction models, and the fund transfer flow to support NEFT/RTGS.

lib/app.dart

@@ -15,6 +15,7 @@ import 'features/auth/screens/welcome_screen.dart';
 import 'features/auth/screens/login_screen.dart';
 import 'features/service/screens/service_screen.dart';
 import 'features/dashboard/screens/dashboard_screen.dart';
+import 'config/themes.dart';
 import 'features/auth/screens/mpin_screen.dart';
 import 'package:local_auth/local_auth.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -26,7 +27,8 @@ class KMobile extends StatefulWidget {
   State<KMobile> createState() => _KMobileState();
 
   static void setLocale(BuildContext context, Locale newLocale) {
-    final _KMobileState? state = context.findAncestorStateOfType<_KMobileState>();
+    final _KMobileState? state =
+        context.findAncestorStateOfType<_KMobileState>();
     state?.setLocale(newLocale);
   }
 }
@@ -35,7 +37,6 @@ class _KMobileState extends State<KMobile> {
   bool showSplash = true;
   Locale? _locale;
 
-
   @override
   void initState() {
     super.initState();
@@ -57,7 +58,6 @@ class _KMobileState extends State<KMobile> {
         _locale = Locale(langCode);
       });
     }
-
   }
 
   void setLocale(Locale locale) {
@@ -66,54 +66,51 @@ class _KMobileState extends State<KMobile> {
     });
   }
 
- @override
-Widget build(BuildContext context) {
+  @override
+  Widget build(BuildContext context) {
 // Set status bar color and brightness
-SystemChrome.setSystemUIOverlayStyle(
-const SystemUiOverlayStyle(
-statusBarColor: Colors.transparent,
-statusBarIconBrightness: Brightness.dark,
-),
-);
+    SystemChrome.setSystemUIOverlayStyle(
+      const SystemUiOverlayStyle(
+        statusBarColor: Colors.transparent,
+        statusBarIconBrightness: Brightness.dark,
+      ),
+    );
 
-return MultiBlocProvider(
-providers: [
-BlocProvider<AuthCubit>(create: (_) => getIt<AuthCubit>()),
-BlocProvider<ThemeCubit>(create: (_) => getIt<ThemeCubit>()),
-],
-child: BlocBuilder<ThemeCubit, ThemeState>(
-builder: (context, themeState) {
-  print('global theme state changed');
-  print(themeState);
-return MaterialApp(
-debugShowCheckedModeBanner: false,
-locale: _locale ?? const Locale('en'),
-supportedLocales: const [
-Locale('en'),
-Locale('hi'),
-],
-localizationsDelegates: const [
-AppLocalizations.delegate,
-GlobalMaterialLocalizations.delegate,
-GlobalWidgetsLocalizations.delegate,
-GlobalCupertinoLocalizations.delegate,
-],
-title: 'kMobile',
-//theme: AppThemes.getLightTheme(themeState.themeType),
-theme: themeState.getThemeData(),
-// darkTheme: AppThemes.getDarkTheme(themeState.themeType),
-themeMode: ThemeMode.system,
-onGenerateRoute: AppRoutes.generateRoute,
-initialRoute: AppRoutes.splash,
-home: showSplash ? const SplashScreen() : const AuthGate(),
-);
-},
-),
-);
+    return MultiBlocProvider(
+      providers: [
+        BlocProvider<AuthCubit>(create: (_) => getIt<AuthCubit>()),
+        BlocProvider<ThemeCubit>(create: (_) => ThemeCubit()),
+      ],
+      child: BlocBuilder<ThemeCubit, ThemeState>(
+        builder: (context, themeState) {
+          print('global theme state changed');
+          return MaterialApp(
+            debugShowCheckedModeBanner: false,
+            locale: _locale ?? const Locale('en'),
+            supportedLocales: const [
+              Locale('en'),
+              Locale('hi'),
+            ],
+            localizationsDelegates: const [
+              AppLocalizations.delegate,
+              GlobalMaterialLocalizations.delegate,
+              GlobalWidgetsLocalizations.delegate,
+              GlobalCupertinoLocalizations.delegate,
+            ],
+            title: 'kMobile',
+            theme: themeState.getThemeData(),
+            darkTheme: themeState.getThemeData(),
+            themeMode: ThemeMode.system,
+            onGenerateRoute: AppRoutes.generateRoute,
+            initialRoute: AppRoutes.splash,
+            home: showSplash ? const SplashScreen() : const AuthGate(),
+          );
+        },
+      ),
+    );
+  }
 }
 
-
-}
 class AuthGate extends StatefulWidget {
   const AuthGate({super.key});
 
@@ -142,8 +139,7 @@ class _AuthGateState extends State<AuthGate> {
     final mpin = await storage.read('mpin');
     final biometric = await storage.read('biometric_enabled');
     setState(() {
-      _isLoggedIn =
-          accessToken != null &&
+      _isLoggedIn = accessToken != null &&
           accessTokenExpiry != null &&
           DateTime.parse(accessTokenExpiry).isAfter(DateTime.now());
       _hasMPin = mpin != null;
@@ -172,7 +168,6 @@ class _AuthGateState extends State<AuthGate> {
     }
   }
 
-
   @override
   Widget build(BuildContext context) {
     if (_checking) {
@@ -319,6 +314,8 @@ class _NavigationScaffoldState extends State<NavigationScaffold> {
 
   @override
   Widget build(BuildContext context) {
+    print(
+        "--- NavigationScaffold is rebuilding with theme color: ${Theme.of(context).primaryColor}");
     return PopScope(
       canPop: false,
       onPopInvokedWithResult: (didPop, result) async {
@@ -357,10 +354,16 @@ class _NavigationScaffoldState extends State<NavigationScaffold> {
         bottomNavigationBar: BottomNavigationBar(
           currentIndex: _selectedIndex,
           type: BottomNavigationBarType.fixed,
-          backgroundColor: Theme.of(context).scaffoldBackgroundColor, // Light blue background
+          backgroundColor: Theme.of(context)
+              .scaffoldBackgroundColor, // Light blue background
           selectedItemColor: Theme.of(context).primaryColor,
           unselectedItemColor: Colors.black54,
-          onTap: _onItemTapped,
+          onTap: (index) {
+            setState(() {
+              _selectedIndex = index;
+            });
+            _pageController.jumpToPage(index);
+          },
           items: [
             BottomNavigationBarItem(
               icon: const Icon(Icons.home_filled),