Top Up Balance logic and Added fixes for routing

frontend/pweb/lib/pages/dashboard/buttons/balance/card.dart

@@ -12,10 +12,12 @@ import 'package:pweb/providers/wallets.dart';
 
 class WalletCard extends StatelessWidget {
   final Wallet wallet;
+  final VoidCallback onTopUp;
 
   const WalletCard({
     super.key,
     required this.wallet,
+    required this.onTopUp,
   });
 
   @override
@@ -43,7 +45,7 @@ class WalletCard extends StatelessWidget {
             ),
             BalanceAddFunds(
               onTopUp: () {
-                // TODO: Implement top-up functionality
+                onTopUp();
               },
             ),
           ],
@@ -51,4 +53,4 @@ class WalletCard extends StatelessWidget {
       ),
     );
   }
-}
+}