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/features/auth/controllers/theme_cubit.dart

@@ -1,48 +1,25 @@
-import 'dart:developer';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'theme_state.dart';
 import 'package:kmobile/config/theme_type.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
+import 'theme_state.dart';
+
 class ThemeCubit extends Cubit<ThemeState> {
-  ThemeCubit(): super(ThemeViolet()) {
+  ThemeCubit() : super(const ThemeState(themeType: ThemeType.violet)) {
     loadTheme();
   }
 
   Future<void> loadTheme() async {
     final prefs = await SharedPreferences.getInstance();
     final themeIndex = prefs.getInt('theme_type') ?? 0;
-    // final isDark = prefs.getBool('is_dark_mode') ?? false;
-
     final type = ThemeType.values[themeIndex];
-    switch(type) {
-      case ThemeType.blue:
-        emit(ThemeBlue());
-      case ThemeType.violet:
-        emit(ThemeViolet());
-      default:
-        emit(ThemeViolet());
-    }
+    emit(ThemeState(themeType: type));
   }
 
   Future<void> changeTheme(ThemeType type) async {
+    print("Attempting to change theme to: ${type.toString()}");
     final prefs = await SharedPreferences.getInstance();
     await prefs.setInt('theme_type', type.index);
-    log("Mode Change");
-    print("mode changed");
-    switch(type) {
-      case ThemeType.blue:
-        emit(ThemeBlue());
-        print('blue matched');
-        break;
-      case ThemeType.violet:
-        emit(ThemeViolet());
-        print('violet matched');
-        break;
-      default:
-        emit(ThemeBlue());
-        print('default macthed');
-    }
+    emit(ThemeState(themeType: type));
   }
 }
-