```

feat(ai_agent): 完善AI适配器和服务功能

- 添加OpenClaw和Hermes健康检查接口
- 实现OpenClaw工具调用功能
- 重构AI适配器使用常量定义
- 增加AI技能系统支持
- 更新配置文件中的默认模型提供者设置

refactor(scheduler): 使用常量替换硬编码值

- 将硬编码的actor值替换为ActorValue常量
- 将receive_id_type替换为FeishuReceiveIdType枚举

refactor(audit): 统一审计日志常量使用

- 将硬编码的actor、source、risk_level等值替换为对应常量
- 更新审核服务中的状态和操作常量引用

refactor(approvals): 标准化审批模块常量使用

- 将applicant默认值替换为ActorValue.API常量
- 使用ApprovalStatus常量替代硬编码状态值
- 更新审核操作常量引用
```

app/modules/reports/schemas.py

@@ -1,8 +1,11 @@
 from datetime import date
-from typing import Literal
 
 from pydantic import BaseModel
 
+from app.core.constants import ActorValue
+from app.modules.feishu.constants import FeishuReceiveIdType
+from app.modules.reports.constants import ReportType
+
 
 class ReportResponse(BaseModel):
     title: str
@@ -12,16 +15,16 @@ class ReportResponse(BaseModel):
 
 class PushReportRequest(BaseModel):
     receive_id: str | None = None
-    receive_id_type: str = "chat_id"
-    actor: str = "system"
+    receive_id_type: str = FeishuReceiveIdType.CHAT_ID
+    actor: str = ActorValue.SYSTEM
 
 
 class WorkReportGenerateRequest(BaseModel):
-    report_type: Literal["daily", "weekly"] = "daily"
-    reporter: str = "system"
+    report_type: ReportType = ReportType.DAILY
+    reporter: str = ActorValue.SYSTEM
     department: str | None = None
     project_code: str | None = None
     period_start: date | None = None
     period_end: date | None = None
     persist: bool = True
-    actor: str = "api"
+    actor: str = ActorValue.API