update

lib/shared/providers/amount_format_provider.dart

@@ -0,0 +1,25 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import '../../core/constants.dart';
+
+class AmountFormatNotifier extends StateNotifier<AmountFormat> {
+  AmountFormatNotifier() : super(AmountFormat.commasDot) {
+    _load();
+  }
+
+  void _load() async {
+    final prefs = await SharedPreferences.getInstance();
+    final index = prefs.getInt('amount_format') ?? 0;
+    state = AmountFormat.values[index];
+  }
+
+  void set(AmountFormat format) async {
+    final prefs = await SharedPreferences.getInstance();
+    state = format;
+    await prefs.setInt('amount_format', format.index);
+  }
+}
+
+final amountFormatProvider = StateNotifierProvider<AmountFormatNotifier, AmountFormat>(
+  (ref) => AmountFormatNotifier(),
+);