feat(app): 初始化家庭网络监控Flutter应用基本结构

- 添加Flutter项目基础文件与配置，包括.gitignore和analysis_options.yaml
- 配置Android相关文件及Gradle构建脚本支持
- 新增设备状态与网络状态数据模型及相关枚举
- 实现网络检测及网速测试服务
- 创建监控状态管理Provider，实现设备状态管理和自动刷新机制
- 编写主界面HomeScreen，包括设备列表、网速仪表盘及基础交互
- 添加资源文件支持应用图标和启动画面
- 配置项目元数据文件，支持Flutter迁移及版本控制
- 新增项目README，提供入门指引和相关资源链接

home_monitor/lib/models/device_status.dart

@@ -0,0 +1,127 @@
+/// 设备状态枚举
+enum DeviceState {
+  online,   // 在线
+  offline,  // 离线
+  warning,  // 警告
+  unknown,  // 未知
+}
+
+/// 设备类型枚举
+enum DeviceType {
+  gateway,      // 网关/主路由
+  bypass,       // 旁路由
+  nas,          // NAS存储
+  server,       // 服务器
+  camera,       // 摄像头
+  printer,      // 打印机
+  other,        // 其他设备
+}
+
+/// 设备状态模型
+class DeviceStatus {
+  final String id;
+  final String name;
+  final DeviceType type;
+  final String ip;
+  final int port;
+  final DeviceState state;
+  final int? latency;         // 延迟(ms)
+  final DateTime lastCheck;   // 最后检测时间
+  final String? errorMessage; // 错误信息
+
+  const DeviceStatus({
+    required this.id,
+    required this.name,
+    required this.type,
+    required this.ip,
+    this.port = 80,
+    this.state = DeviceState.unknown,
+    this.latency,
+    required this.lastCheck,
+    this.errorMessage,
+  });
+
+  /// 从JSON创建
+  factory DeviceStatus.fromJson(Map<String, dynamic> json) {
+    return DeviceStatus(
+      id: json['id'] as String,
+      name: json['name'] as String,
+      type: DeviceType.values.firstWhere(
+        (e) => e.name == json['type'],
+        orElse: () => DeviceType.other,
+      ),
+      ip: json['ip'] as String,
+      port: json['port'] as int? ?? 80,
+      state: DeviceState.values.firstWhere(
+        (e) => e.name == json['state'],
+        orElse: () => DeviceState.unknown,
+      ),
+      latency: json['latency'] as int?,
+      lastCheck: DateTime.parse(json['lastCheck'] as String),
+      errorMessage: json['errorMessage'] as String?,
+    );
+  }
+
+  /// 转换为JSON
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'type': type.name,
+      'ip': ip,
+      'port': port,
+      'state': state.name,
+      'latency': latency,
+      'lastCheck': lastCheck.toIso8601String(),
+      'errorMessage': errorMessage,
+    };
+  }
+
+  /// 复制并更新
+  DeviceStatus copyWith({
+    String? id,
+    String? name,
+    DeviceType? type,
+    String? ip,
+    int? port,
+    DeviceState? state,
+    int? latency,
+    DateTime? lastCheck,
+    String? errorMessage,
+  }) {
+    return DeviceStatus(
+      id: id ?? this.id,
+      name: name ?? this.name,
+      type: type ?? this.type,
+      ip: ip ?? this.ip,
+      port: port ?? this.port,
+      state: state ?? this.state,
+      latency: latency ?? this.latency,
+      lastCheck: lastCheck ?? this.lastCheck,
+      errorMessage: errorMessage ?? this.errorMessage,
+    );
+  }
+
+  /// 是否在线
+  bool get isOnline => state == DeviceState.online;
+
+  /// 获取设备类型图标名称
+  String get iconName {
+    switch (type) {
+      case DeviceType.gateway:
+        return 'router';
+      case DeviceType.bypass:
+        return 'alt_route';
+      case DeviceType.nas:
+        return 'storage';
+      case DeviceType.server:
+        return 'dns';
+      case DeviceType.camera:
+        return 'videocam';
+      case DeviceType.printer:
+        return 'print';
+      case DeviceType.other:
+        return 'devices';
+    }
+  }
+}