Fixed wallets load

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

@@ -0,0 +1,21 @@
+import 'package:flutter/foundation.dart';
+
+
+class CarouselIndexController with ChangeNotifier {
+  int _index = 0;
+
+  int get index => _index;
+
+  void setIndex(int value, int max) {
+    final next = value.clamp(0, max > 0 ? max - 1 : 0);
+    if (next == _index) return;
+    _index = next;
+    notifyListeners();
+  }
+
+  void reset() {
+    if (_index == 0) return;
+    _index = 0;
+    notifyListeners();
+  }
+}