feat: 新增电工APP端与定时任务管理功能

- 新增电工APP独立鉴权中间件与登录注册接口
- 新增定时任务管理模块，支持任务配置、执行日志与手动触发
- 新增运维费定价与电工派单成本价目管理
- 新增电工资质证照管理与到期提醒定时任务
- 完善数据库实体与DTO校验，优化权限控制

server/package.json

@@ -17,6 +17,7 @@
 		"@aws-sdk/s3-request-presigner": "^3.1131.0",
 		"@midwayjs/cache-manager": "^3.19.0",
 		"@midwayjs/core": "^3.19.0",
+		"@midwayjs/cron": "^3.19.0",
 		"@midwayjs/koa": "^3.19.0",
 		"@midwayjs/logger": "^4.0.1",
 		"@midwayjs/sequelize": "^3.19.0",
@@ -27,6 +28,7 @@
 		"cache-manager-ioredis": "^2.1.0",
 		"class-transformer": "^0.5.1",
 		"class-validator": "^0.14.1",
+		"cron": "^3.5.0",
 		"dayjs": "^1.11.13",
 		"dotenv": "^17.4.2",
 		"ioredis": "^5.4.1",