feat: 重构充值提现功能，添加冷钱包管理

后端改动：
- 新增冷钱包管理模块（ColdWallet实体、Mapper、Service、Controller）
- 充值流程：创建订单→显示钱包地址→用户确认打款→管理员审核
- 提现流程：用户输入地址和联系方式→冻结余额→管理员审核
- OrderFund新增字段：walletId, walletAddress, withdrawContact, payTime, confirmTime

前端改动（monisuo-admin）：
- 新增冷钱包管理页面（wallets.vue）
- 优化订单管理页面，支持新的状态流转
- 添加调试日志帮助排查登录问题

前端改动（flutter_monisuo）：
- 更新OrderFund模型支持新字段
- 充值成功后显示钱包地址弹窗
- 提现时收集提现地址和联系方式
- 新增资金订单页面

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

flutter_monisuo/lib/providers/asset_provider.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import '../data/models/account_models.dart';
+import '../data/models/order_models.dart';
 import '../data/services/asset_service.dart';
 import '../data/services/fund_service.dart';
 import '../core/network/dio_client.dart';
@@ -13,8 +14,10 @@ class AssetProvider extends ChangeNotifier {
   AccountFund? _fundAccount;
   List<AccountTrade> _tradeAccounts = [];
   List<AccountFlow> _flows = [];
+  List<OrderFund> _fundOrders = [];
   bool _isLoading = false;
   bool _isLoadingFlows = false;
+  bool _isLoadingOrders = false;
   String? _error;
 
   AssetProvider(this._assetService, this._fundService);
@@ -25,8 +28,10 @@ class AssetProvider extends ChangeNotifier {
   List<AccountTrade> get tradeAccounts => _tradeAccounts;
   List<AccountTrade> get holdings => _tradeAccounts;
   List<AccountFlow> get flows => _flows;
+  List<OrderFund> get fundOrders => _fundOrders;
   bool get isLoading => _isLoading;
   bool get isLoadingFlows => _isLoadingFlows;
+  bool get isLoadingOrders => _isLoadingOrders;
   String? get error => _error;
 
   /// 加载资产总览
@@ -120,8 +125,8 @@ class AssetProvider extends ChangeNotifier {
     }
   }
 
-  /// 充值
-  Future<ApiResponse<void>> deposit({required String amount, String? remark}) async {
+  /// 充值 - 返回订单详情包含钱包地址
+  Future<ApiResponse<Map<String, dynamic>>> deposit({required String amount, String? remark}) async {
     try {
       final response = await _fundService.deposit(amount: amount, remark: remark);
       if (response.success) {
@@ -134,10 +139,33 @@ class AssetProvider extends ChangeNotifier {
     }
   }
 
-  /// 提现
-  Future<ApiResponse<void>> withdraw({required String amount, String? remark}) async {
+  /// 确认已打款
+  Future<ApiResponse<void>> confirmPay(String orderNo) async {
     try {
-      final response = await _fundService.withdraw(amount: amount, remark: remark);
+      final response = await _fundService.confirmPay(orderNo);
+      if (response.success) {
+        await loadFundOrders();
+      }
+      return response;
+    } catch (e) {
+      return ApiResponse.fail('确认打款失败: $e');
+    }
+  }
+
+  /// 提现
+  Future<ApiResponse<Map<String, dynamic>>> withdraw({
+    required String amount,
+    required String withdrawAddress,
+    String? withdrawContact,
+    String? remark,
+  }) async {
+    try {
+      final response = await _fundService.withdraw(
+        amount: amount,
+        withdrawAddress: withdrawAddress,
+        withdrawContact: withdrawContact,
+        remark: remark,
+      );
       if (response.success) {
         await loadOverview();
         await loadFundAccount();
@@ -148,6 +176,43 @@ class AssetProvider extends ChangeNotifier {
     }
   }
 
+  /// 加载充提订单
+  Future<void> loadFundOrders({int? type, int pageNum = 1, int pageSize = 20}) async {
+    _isLoadingOrders = true;
+    notifyListeners();
+
+    try {
+      final response = await _fundService.getOrders(
+        type: type,
+        pageNum: pageNum,
+        pageSize: pageSize,
+      );
+      if (response.success && response.data != null) {
+        final list = response.data!['list'] as List?;
+        _fundOrders = _fundService.parseOrderList(list);
+      }
+    } catch (_) {
+      // 忽略错误
+    }
+
+    _isLoadingOrders = false;
+    notifyListeners();
+  }
+
+  /// 取消订单
+  Future<ApiResponse<void>> cancelOrder(String orderNo) async {
+    try {
+      final response = await _fundService.cancelOrder(orderNo);
+      if (response.success) {
+        await loadFundOrders();
+        await loadFundAccount();
+      }
+      return response;
+    } catch (e) {
+      return ApiResponse.fail('取消订单失败: $e');
+    }
+  }
+
   /// 刷新所有资产数据
   Future<void> refreshAll() async {
     await Future.wait([