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/fund_transfer/screens/fund_transfer_beneficiary_screen.dart

@@ -90,24 +90,26 @@ class _FundTransferBeneficiaryScreen
 
 import 'package:flutter/material.dart';
 import 'package:kmobile/data/models/beneficiary.dart';
-//import 'package:kmobile/features/beneficiaries/screens/add_beneficiary_screen.dart';
+import 'package:kmobile/features/fund_transfer/screens/fund_transfer_amount_screen.dart';
 import '../../../l10n/app_localizations.dart';
 import '../../../di/injection.dart';
 import 'package:kmobile/api/services/beneficiary_service.dart';
 import 'package:shimmer/shimmer.dart';
 
-
 class FundTransferBeneficiaryScreen extends StatefulWidget {
-  const FundTransferBeneficiaryScreen({super.key});
+  final String creditAccountNo;
+  final String remitterName;
+  const FundTransferBeneficiaryScreen(
+      {super.key, required this.creditAccountNo, required this.remitterName});
 
   @override
   State<FundTransferBeneficiaryScreen> createState() =>
-      _ManageBeneficiariesScreen();
+      _FundTransferBeneficiaryScreenState();
 }
 
-class _ManageBeneficiariesScreen extends State<FundTransferBeneficiaryScreen> {
+class _FundTransferBeneficiaryScreenState
+    extends State<FundTransferBeneficiaryScreen> {
   var service = getIt<BeneficiaryService>();
-  //final BeneficiaryService _service = BeneficiaryService();
   bool _isLoading = true;
   List<Beneficiary> _beneficiaries = [];
 
@@ -120,7 +122,7 @@ class _ManageBeneficiariesScreen extends State<FundTransferBeneficiaryScreen> {
   Future<void> _loadBeneficiaries() async {
     final data = await service.fetchBeneficiaryList();
     setState(() {
-      _beneficiaries = data ;
+      _beneficiaries = data;
       _isLoading = false;
     });
   }
@@ -132,7 +134,7 @@ class _ManageBeneficiariesScreen extends State<FundTransferBeneficiaryScreen> {
         baseColor: Colors.grey.shade300,
         highlightColor: Colors.grey.shade100,
         child: ListTile(
-          leading: CircleAvatar(
+          leading: const CircleAvatar(
             radius: 24,
             backgroundColor: Colors.white,
           ),
@@ -151,27 +153,61 @@ class _ManageBeneficiariesScreen extends State<FundTransferBeneficiaryScreen> {
     );
   }
 
+  Widget _getBankLogo(String? bankName) {
+    if (bankName != null && bankName.toLowerCase().contains('state bank of india')) {
+      return Image.asset(
+        'assets/images/sbi_logo.png',
+        width: 40,
+        height: 40,
+      );
+    } else {
+      return const Icon(
+        Icons.account_balance,
+        size: 40,
+        color: Colors.grey,
+      );
+    }
+  }
+
   Widget _buildBeneficiaryList() {
     if (_beneficiaries.isEmpty) {
-      return Center(child: Text(AppLocalizations.of(context).noBeneficiaryFound));
+      return Center(
+          child: Text(AppLocalizations.of(context).noBeneficiaryFound));
     }
     return ListView.builder(
       itemCount: _beneficiaries.length,
       itemBuilder: (context, index) {
-        final item = _beneficiaries[index];
+        final beneficiary = _beneficiaries[index];
         return ListTile(
           leading: CircleAvatar(
             radius: 24,
-            backgroundColor: Theme.of(context).primaryColor.withOpacity(0.2),
-            child: Text(
-              item.name.isNotEmpty
-                  ? item.name[0].toUpperCase()
-                  : '?',
-              style: const TextStyle(fontWeight: FontWeight.bold),
-            ),
+            backgroundColor: Colors.transparent,
+            child: _getBankLogo(beneficiary.bankName),
           ),
-          title: Text(item.name ?? 'Unknown'),
-          subtitle: Text(item.accountNo ?? 'No account number'),
+          title: Text(beneficiary.name),
+          subtitle: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text(beneficiary.accountNo),
+              if (beneficiary.bankName != null && beneficiary.bankName!.isNotEmpty)
+                Text(
+                  beneficiary.bankName!,
+                  style: TextStyle(fontSize: 12, color: Colors.grey[600]),
+                ),
+            ],
+          ),
+          onTap: () {
+            Navigator.push(
+              context,
+              MaterialPageRoute(
+                builder: (context) => FundTransferAmountScreen(
+                  debitAccountNo: widget.creditAccountNo,
+                  creditBeneficiary: beneficiary,
+                  remitterName: widget.remitterName,
+                ),
+              ),
+            );
+          },
         );
       },
     );