refactor(generator): 优化代码生成模块接口和服务实现

- 修改接口定义，增加路径参数并完善请求描述，增强参数校验和依赖注入
- 优化CRUD层数据库操作，统一异步会话使用，删除多余db参数
- 增加业务表与字段模型关系级联删除配置，优化模型关联关系声明
- 精简pydantic模型，去除冗余校验装饰器，完善字段描述和必填约束
- 服务层增加类型检查和异常抛出，规范业务逻辑流程和错误提示
- 优化代码结构，调整模块导入顺序和注释，提升代码可读性和一致性

backend/app/api/v1/module_monitor/job/crud.py

@@ -21,7 +21,7 @@ class JobCRUD(CRUDBase[JobModel, JobCreateSchema, JobUpdateSchema]):
         """获取定时任务详情"""
         return await self.get(id=id)
     
-    async def get_obj_list_crud(self, search: Dict = None, order_by: List[Dict[str, str]] = None) -> Sequence[JobModel]:
+    async def get_obj_list_crud(self, search: Optional[Dict] = None, order_by: Optional[List[Dict[str, str]]] = None) -> Sequence[JobModel]:
         """获取定时任务列表"""
         return await self.list(search=search, order_by=order_by)
     
@@ -58,7 +58,7 @@ class JobLogCRUD(CRUDBase[JobLogModel, JobLogCreateSchema, JobLogUpdateSchema]):
         """获取定时任务日志详情"""
         return await self.get(id=id)
     
-    async def get_obj_log_list_crud(self, search: Dict = None, order_by: List[Dict[str, str]] = None) -> Sequence[JobLogModel]:
+    async def get_obj_log_list_crud(self, search: Optional[Dict] = None, order_by: Optional[List[Dict[str, str]]] = None) -> Sequence[JobLogModel]:
         """获取定时任务日志列表"""
         return await self.list(search=search, order_by=order_by)