added wallet management localizations

frontend/pweb/lib/l10n/en.arb

@@ -452,6 +452,7 @@
   "failedToLoadHistory": "Failed to load history",
   "retry": "Retry",
   "walletName": "Wallet name",
+  "walletNameUpdateFailed": "Failed to update wallet name",
   "walletNameSaved": "Wallet name saved",
   "topUpBalance": "Top Up Balance",
   "addFunctionality": "Add functionality",

frontend/pweb/lib/l10n/ru.arb

@@ -453,6 +453,7 @@
   "failedToLoadHistory": "Не удалось загрузить историю",
   "retry": "Повторить",
   "walletName": "Название кошелька",
+  "walletNameUpdateFailed": "Не удалось обновить название кошелька",
   "walletNameSaved": "Название кошелька сохранено",
   "topUpBalance": "Пополнить баланс",
   "addFunctionality": "Добавить функциональность",

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

@@ -22,7 +22,7 @@ class BalanceWidget extends StatelessWidget {
     
     final wallets = walletsProvider.wallets;
     
-    if (wallets == null || wallets.isEmpty) {
+    if (wallets.isEmpty) {
       return Center(child: Text(loc.noWalletsAvailable));
     }
 

frontend/pweb/lib/pages/payout_page/wallet/edit/buttons/buttons.dart

@@ -13,9 +13,8 @@ class ButtonsWalletWidget extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final provider = context.watch<WalletsProvider>();
-    final wallet = provider.wallets?.first;
-
-    if (wallet == null) return const SizedBox.shrink();
+    
+    if (provider.wallets.isEmpty) return const SizedBox.shrink();
 
     return Row(
         mainAxisAlignment: MainAxisAlignment.spaceAround,

frontend/pweb/lib/pages/payout_page/wallet/edit/header.dart

@@ -36,7 +36,6 @@ class _WalletEditHeaderState extends State<WalletEditHeader> {
     final provider = context.watch<WalletsProvider>();
     final wallet = provider.selectedWallet;
     final loc = AppLocalizations.of(context)!;
-    final messanger = ScaffoldMessenger.of(context);
 
     if (wallet == null) {
       return SizedBox.shrink();
@@ -93,8 +92,8 @@ class _WalletEditHeaderState extends State<WalletEditHeader> {
                         await executeActionWithNotification(
                           context: context, 
                           action: () async => await provider.updateWallet(wallet.copyWith(name: _controller.text)), 
-                          errorMessage: 'Failed to update wallet name',
-                          successMessage: 'Wallet name saved',
+                          errorMessage: loc.walletNameUpdateFailed,
+                          successMessage: loc.walletNameSaved,
                         );
                         setState(() {
                           _isEditing = false;

frontend/pweb/lib/pages/payout_page/wallet/wigets.dart

@@ -18,10 +18,6 @@ class WalletWidgets extends StatelessWidget {
 
     final wallets = provider.wallets;
 
-    if (wallets == null) {
-      return const Center(child: CircularProgressIndicator());
-    }
-
     return GridView.builder(
       scrollDirection: Axis.vertical,
       physics: AlwaysScrollableScrollPhysics(),