refactor: 将前端从 uni-app x 重构为 Flutter

变更内容:
- 删除 uni-app x 项目 (app/ 目录)
- 新增 Flutter 项目 (flutter_monisuo/ 目录)
- 新增部署脚本 (deploy/ 目录)

Flutter 项目功能:
- 用户登录/注册
- 首页资产概览
- 行情币种列表
- 交易买卖操作
- 资产账户管理
- 充值/提现/划转
- 深色主题
- JWT Token 认证

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

flutter_monisuo/lib/providers/asset_provider.dart

@@ -0,0 +1,159 @@
+import 'package:flutter/material.dart';
+import '../data/models/account_models.dart';
+import '../data/services/asset_service.dart';
+import '../data/services/fund_service.dart';
+import '../core/network/dio_client.dart';
+
+/// 资产状态管理
+class AssetProvider extends ChangeNotifier {
+  final AssetService _assetService;
+  final FundService _fundService;
+
+  AssetOverview? _overview;
+  AccountFund? _fundAccount;
+  List<AccountTrade> _tradeAccounts = [];
+  List<AccountFlow> _flows = [];
+  bool _isLoading = false;
+  bool _isLoadingFlows = false;
+  String? _error;
+
+  AssetProvider(this._assetService, this._fundService);
+
+  // Getters
+  AssetOverview? get overview => _overview;
+  AccountFund? get fundAccount => _fundAccount;
+  List<AccountTrade> get tradeAccounts => _tradeAccounts;
+  List<AccountTrade> get holdings => _tradeAccounts;
+  List<AccountFlow> get flows => _flows;
+  bool get isLoading => _isLoading;
+  bool get isLoadingFlows => _isLoadingFlows;
+  String? get error => _error;
+
+  /// 加载资产总览
+  Future<void> loadOverview() async {
+    _isLoading = true;
+    _error = null;
+    notifyListeners();
+
+    try {
+      final response = await _assetService.getOverview();
+      if (response.success) {
+        _overview = response.data;
+      } else {
+        _error = response.message;
+      }
+    } catch (e) {
+      _error = '加载失败: $e';
+    }
+
+    _isLoading = false;
+    notifyListeners();
+  }
+
+  /// 加载资金账户
+  Future<void> loadFundAccount() async {
+    try {
+      final response = await _assetService.getFundAccount();
+      if (response.success) {
+        _fundAccount = response.data;
+        notifyListeners();
+      }
+    } catch (_) {
+      // 忽略错误
+    }
+  }
+
+  /// 加载交易账户
+  Future<void> loadTradeAccount() async {
+    try {
+      final response = await _assetService.getTradeAccount();
+      if (response.success) {
+        _tradeAccounts = response.data ?? [];
+        notifyListeners();
+      }
+    } catch (_) {
+      // 忽略错误
+    }
+  }
+
+  /// 加载资金流水
+  Future<void> loadFlows({int? flowType, int pageNum = 1}) async {
+    _isLoadingFlows = true;
+    notifyListeners();
+
+    try {
+      final response = await _assetService.getFlow(
+        flowType: flowType,
+        pageNum: pageNum,
+      );
+      if (response.success && response.data != null) {
+        final list = response.data!['list'] as List?;
+        _flows = list?.map((e) => AccountFlow.fromJson(e as Map<String, dynamic>)).toList() ?? [];
+      }
+    } catch (_) {
+      // 忽略错误
+    }
+
+    _isLoadingFlows = false;
+    notifyListeners();
+  }
+
+  /// 划转资金
+  Future<ApiResponse<void>> transfer({
+    required int direction,
+    required String amount,
+  }) async {
+    try {
+      final response = await _assetService.transfer(
+        direction: direction,
+        amount: amount,
+      );
+      if (response.success) {
+        // 刷新数据
+        await loadOverview();
+        await loadFundAccount();
+        await loadTradeAccount();
+      }
+      return response;
+    } catch (e) {
+      return ApiResponse.fail('划转失败: $e');
+    }
+  }
+
+  /// 充值
+  Future<ApiResponse<void>> deposit({required String amount, String? remark}) async {
+    try {
+      final response = await _fundService.deposit(amount: amount, remark: remark);
+      if (response.success) {
+        await loadOverview();
+        await loadFundAccount();
+      }
+      return response;
+    } catch (e) {
+      return ApiResponse.fail('充值申请失败: $e');
+    }
+  }
+
+  /// 提现
+  Future<ApiResponse<void>> withdraw({required String amount, String? remark}) async {
+    try {
+      final response = await _fundService.withdraw(amount: amount, remark: remark);
+      if (response.success) {
+        await loadOverview();
+        await loadFundAccount();
+      }
+      return response;
+    } catch (e) {
+      return ApiResponse.fail('提现申请失败: $e');
+    }
+  }
+
+  /// 刷新所有资产数据
+  Future<void> refreshAll() async {
+    await Future.wait([
+      loadOverview(),
+      loadFundAccount(),
+      loadTradeAccount(),
+    ]);
+  }
+}