feat: 完成智能电网电工端 Flutter 应用初始化

创建完整的 Flutter 项目结构，包含 Android 和 iOS 平台配置、核心网络层、路由、状态管理及业务模块（订单、收益、认证），适配原 uni-app 项目功能逻辑

lib/features/notice/data/notice_api.dart

@@ -0,0 +1,149 @@
+import '../../../core/network/api_client.dart';
+import '../../../core/network/api_response.dart';
+import '../../../core/utils/id_util.dart';
+
+/// 站内消息。对应后端 `sys_notice` 的电工端视图。
+///
+/// 后端 `toJSON()` 返回原始列名，时间字段为下划线命名 `created_at`，
+/// `is_read` 为 0/1。
+class Notice {
+  const Notice({
+    required this.id,
+    required this.noticeType,
+    required this.title,
+    required this.content,
+    required this.bizType,
+    required this.bizId,
+    required this.receiverType,
+    required this.ruleId,
+    required this.batchId,
+    required this.isRead,
+    required this.createdAt,
+  });
+
+  final int id;
+
+  /// 通知类型，如 `cert_expire`。
+  final String noticeType;
+
+  final String title;
+  final String content;
+
+  /// 业务类型，如 `worker_cert`。
+  final String bizType;
+
+  /// 业务主键。
+  final int? bizId;
+
+  /// `user` 管理端 / `worker` 电工端。
+  final String receiverType;
+
+  /// 来源通知规则 / 群发批次，可能为空。
+  final int? ruleId;
+  final int? batchId;
+
+  final bool isRead;
+
+  /// 原始 `created_at`，交给 `format_util` 渲染。
+  final Object? createdAt;
+
+  factory Notice.fromJson(Map<String, dynamic> json) => Notice(
+    id: toIntOr(json['id'], 0),
+    noticeType: json['noticeType'] as String? ?? '',
+    title: json['title'] as String? ?? '',
+    content: json['content'] as String? ?? '',
+    bizType: json['bizType'] as String? ?? '',
+    bizId: toIntOrNull(json['bizId']),
+    receiverType: json['receiverType'] as String? ?? '',
+    ruleId: toIntOrNull(json['ruleId']),
+    batchId: toIntOrNull(json['batchId']),
+    isRead: _toBool(json['isRead']),
+    createdAt: json['created_at'],
+  );
+
+  /// 复制为已读，用于标记成功后本地更新，避免整页重拉。
+  Notice copiedWithRead() => Notice(
+    id: id,
+    noticeType: noticeType,
+    title: title,
+    content: content,
+    bizType: bizType,
+    bizId: bizId,
+    receiverType: receiverType,
+    ruleId: ruleId,
+    batchId: batchId,
+    isRead: true,
+    createdAt: createdAt,
+  );
+}
+
+/// 消息分页结果。
+class NoticePage {
+  const NoticePage({
+    required this.list,
+    required this.total,
+    required this.page,
+    required this.pageSize,
+  });
+
+  final List<Notice> list;
+  final int total;
+  final int page;
+  final int pageSize;
+
+  factory NoticePage.fromJson(Map<String, dynamic> json) => NoticePage(
+    list: (json['list'] as List? ?? const [])
+        .map((e) => Notice.fromJson((e as Map).cast<String, dynamic>()))
+        .toList(),
+    total: toIntOr(json['total'], 0),
+    page: toIntOr(json['page'], 1),
+    pageSize: toIntOr(json['pageSize'], 10),
+  );
+}
+
+/// 站内消息中心接口，对应后端 `/api/worker-app/notices*`。
+class NoticeApi {
+  NoticeApi(this._client);
+
+  final ApiClient _client;
+
+  /// 消息列表。`isRead` 传 true/false 时按已读状态筛选，null 取全部。
+  ///
+  /// 后端 `Number(query.isRead)` 解析，故这里显式传 1 / 0。
+  Future<ApiResponse<NoticePage>> list({
+    int page = 1,
+    int pageSize = 10,
+    bool? isRead,
+  }) => _client.get<NoticePage>(
+    '/worker-app/notices',
+    query: {
+      'page': page,
+      'pageSize': pageSize,
+      if (isRead != null) 'isRead': isRead ? 1 : 0,
+    },
+    parse: (d) => NoticePage.fromJson((d as Map).cast<String, dynamic>()),
+  );
+
+  /// 未读消息数。
+  Future<ApiResponse<int>> unreadCount() => _client.get<int>(
+    '/worker-app/notices/unread-count',
+    parse: (d) => toIntOr((d as Map)['count'], 0),
+  );
+
+  /// 全部标记已读，返回更新条数。
+  Future<ApiResponse<int>> readAll() => _client.put<int>(
+    '/worker-app/notices/read-all',
+    parse: (d) => toIntOr((d as Map)['updated'], 0),
+  );
+
+  /// 单条标记已读。
+  Future<ApiResponse<void>> markRead(int id) =>
+      _client.put<void>('/worker-app/notices/$id/read');
+}
+
+bool _toBool(Object? v) {
+  if (v is bool) return v;
+  if (v is num) return v != 0;
+  final s = v?.toString().toLowerCase();
+  return s == '1' || s == 'true';
+}