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/data/models/order_models.dart

@@ -72,25 +72,39 @@ class OrderFund {
   final int id;
   final String orderNo;
   final int userId;
-  final int orderType; // 1=充值, 2=提现
+  final String username;
+  final int type; // 1=充值, 2=提现
   final String amount;
-  final int status; // 1=待审核, 2=已通过, 3=已拒绝, 4=已取消
+  final int status;
+  // 充值状态: 1=待付款, 2=待确认, 3=已完成, 4=已驳回, 5=已取消
+  // 提现状态: 1=待审批, 2=已完成, 3=已驳回, 4=已取消
+  final int? walletId; // 冷钱包ID(充值)
+  final String? walletAddress; // 钱包地址(充值/提现)
+  final String? withdrawContact; // 提现联系方式
   final String remark;
-  final String? auditRemark;
+  final String? rejectReason;
+  final String? adminRemark;
   final DateTime? createTime;
-  final DateTime? auditTime;
+  final DateTime? payTime; // 用户确认打款时间
+  final DateTime? confirmTime; // 管理员确认时间
 
   OrderFund({
     required this.id,
     required this.orderNo,
     required this.userId,
-    required this.orderType,
+    required this.username,
+    required this.type,
     required this.amount,
     required this.status,
+    this.walletId,
+    this.walletAddress,
+    this.withdrawContact,
     required this.remark,
-    this.auditRemark,
+    this.rejectReason,
+    this.adminRemark,
     this.createTime,
-    this.auditTime,
+    this.payTime,
+    this.confirmTime,
   });
 
   factory OrderFund.fromJson(Map<String, dynamic> json) {
@@ -98,42 +112,117 @@ class OrderFund {
       id: json['id'] as int? ?? 0,
       orderNo: json['orderNo'] as String? ?? '',
       userId: json['userId'] as int? ?? 0,
-      orderType: json['orderType'] as int? ?? 1,
+      username: json['username'] as String? ?? '',
+      type: json['type'] as int? ?? 1,
       amount: json['amount']?.toString() ?? '0.00',
       status: json['status'] as int? ?? 1,
+      walletId: json['walletId'] as int?,
+      walletAddress: json['walletAddress'] as String?,
+      withdrawContact: json['withdrawContact'] as String?,
       remark: json['remark']?.toString() ?? '',
-      auditRemark: json['auditRemark']?.toString(),
+      rejectReason: json['rejectReason'] as String?,
+      adminRemark: json['adminRemark'] as String?,
       createTime: json['createTime'] != null
           ? DateTime.tryParse(json['createTime'])
           : null,
-      auditTime: json['auditTime'] != null
-          ? DateTime.tryParse(json['auditTime'])
+      payTime: json['payTime'] != null
+          ? DateTime.tryParse(json['payTime'])
+          : null,
+      confirmTime: json['confirmTime'] != null
+          ? DateTime.tryParse(json['confirmTime'])
           : null,
     );
   }
 
   /// 订单类型文字
-  String get orderTypeText => orderType == 1 ? '充值' : '提现';
+  String get typeText => type == 1 ? '充值' : '提现';
 
-  /// 状态文字
+  /// 状态文字 (根据类型区分)
   String get statusText {
-    switch (status) {
-      case 1:
-        return '待审核';
-      case 2:
-        return '已通过';
-      case 3:
-        return '已拒绝';
-      case 4:
-        return '已取消';
-      default:
-        return '未知';
+    if (type == 1) {
+      // 充值状态
+      switch (status) {
+        case 1:
+          return '待付款';
+        case 2:
+          return '待确认';
+        case 3:
+          return '已完成';
+        case 4:
+          return '已驳回';
+        case 5:
+          return '已取消';
+        default:
+          return '未知';
+      }
+    } else {
+      // 提现状态
+      switch (status) {
+        case 1:
+          return '待审批';
+        case 2:
+          return '已完成';
+        case 3:
+          return '已驳回';
+        case 4:
+          return '已取消';
+        default:
+          return '未知';
+      }
     }
   }
 
   /// 是否为充值
-  bool get isDeposit => orderType == 1;
+  bool get isDeposit => type == 1;
 
   /// 是否可取消
-  bool get canCancel => status == 1;
+  /// 充值: 仅待付款可取消
+  /// 提现: 仅待审批可取消
+  bool get canCancel {
+    if (type == 1) {
+      return status == 1; // 充值待付款
+    } else {
+      return status == 1; // 提现待审批
+    }
+  }
+
+  /// 是否可确认打款 (仅充值待付款)
+  bool get canConfirmPay => type == 1 && status == 1;
+}
+
+/// 冷钱包模型
+class ColdWallet {
+  final int id;
+  final String name;
+  final String address;
+  final String network;
+  final bool isDefault;
+  final int status; // 0=禁用, 1=启用
+  final DateTime? createTime;
+
+  ColdWallet({
+    required this.id,
+    required this.name,
+    required this.address,
+    required this.network,
+    required this.isDefault,
+    required this.status,
+    this.createTime,
+  });
+
+  factory ColdWallet.fromJson(Map<String, dynamic> json) {
+    return ColdWallet(
+      id: json['id'] as int? ?? 0,
+      name: json['name'] as String? ?? '',
+      address: json['address'] as String? ?? '',
+      network: json['network'] as String? ?? 'TRC20',
+      isDefault: json['isDefault'] as bool? ?? false,
+      status: json['status'] as int? ?? 1,
+      createTime: json['createTime'] != null
+          ? DateTime.tryParse(json['createTime'])
+          : null,
+    );
+  }
+
+  bool get isEnabled => status == 1;
 }