统一弹窗风格：Material Design 3 规范，消除颜色不一致

- 所有 AlertDialog 替换为 ModernDialog
- ConfirmDialog/AssetDialogs 去掉 GlassPanel，统一 surfaceContainer 背景
- 按钮统一 FilledButton + TextButton
- 修复 import 路径

flutter_monisuo/lib/ui/pages/orders/fund_orders_page.dart

@@ -11,6 +11,7 @@ import '../../../core/utils/toast_utils.dart';
 import '../../../core/event/app_event_bus.dart';
 import '../../../providers/asset_provider.dart';
 import '../../../data/models/order_models.dart';
+import '../../shared/modern_dialog.dart';
 
 /// 充提訂單頁面
 class FundOrdersPage extends StatefulWidget {
@@ -502,28 +503,19 @@ class _FundOrdersPageState extends State<FundOrdersPage> {
     }
   }
 
-  Future<bool?> showShadConfirmDialog({
+  Future<bool> showShadConfirmDialog({
     required BuildContext context,
     required String title,
     required String description,
     bool destructive = false,
   }) {
-    return showDialog<bool>(
+    return ModernDialog.confirm(
       context: context,
-      builder: (context) => AlertDialog(
-        title: Text(title),
-        content: Text(description),
-        actions: [
-          TextButton(
-            child: const Text('取消'),
-            onPressed: () => Navigator.pop(context, false),
-          ),
-          TextButton(
-            child: Text(destructive ? '確定取消' : '確認'),
-            onPressed: () => Navigator.pop(context, true),
-          ),
-        ],
-      ),
+      title: title,
+      description: description,
+      confirmText: destructive ? '確定取消' : '確認',
+      cancelText: '取消',
+      isDestructive: destructive,
     );
   }
 }