trim wallet name before validation

Author: smk762

lib/blocs/wallets_repository.dart

@@ -99,11 +99,23 @@ class WalletsRepository {
       getWallets().ignore();
       return null;
     }
+    
+    final trimmedName = name.trim();
+    
+    // Check if the trimmed name is empty (prevents space-only names)
+    if (trimmedName.isEmpty) {
+      return LocaleKeys.walletCreationNameLengthError.tr();
+    }
+    
+    // Check if trimmed name exceeds length limit
+    if (trimmedName.length > 40) {
+      return LocaleKeys.walletCreationNameLengthError.tr();
+    }
 
+    // Check for duplicates using the exact input name (not trimmed)
+    // This preserves backward compatibility with existing wallets that might have spaces
     if (_cachedWallets!.firstWhereOrNull((w) => w.name == name) != null) {
       return LocaleKeys.walletCreationExistNameError.tr();
-    } else if (name.isEmpty || name.length > 40) {
-      return LocaleKeys.walletCreationNameLengthError.tr();
     }
 
     return null;

lib/views/wallets_manager/widgets/wallet_creation.dart

@@ -186,7 +186,7 @@ class _WalletCreationState extends State<WalletCreation> {
 
     WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
       widget.onCreate(
-        name: _nameController.text,
+        name: _nameController.text.trim(),
         password: _passwordController.text,
         walletType: _isHdMode ? WalletType.hdwallet : WalletType.iguana,
       );

lib/views/wallets_manager/widgets/wallet_simple_import.dart

@@ -97,7 +97,7 @@ class _WalletImportWrapperState extends State<WalletSimpleImport> {
             _step == WalletSimpleImportSteps.nameAndSeed
                 ? LocaleKeys.walletImportTitle.tr()
                 : LocaleKeys.walletImportCreatePasswordTitle.tr(
-                    args: [_nameController.text],
+                    args: [_nameController.text.trim()],
                   ),
             style: Theme.of(
               context,
@@ -325,7 +325,7 @@ class _WalletImportWrapperState extends State<WalletSimpleImport> {
 
     WidgetsBinding.instance.addPostFrameCallback((_) {
       widget.onImport(
-        name: _nameController.text,
+        name: _nameController.text.trim(),
         password: _passwordController.text,
         walletConfig: config,
       );