```

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/ai_agent/routes.py

@@ -1,6 +1,7 @@
 from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
 
+from app.core.constants import ActorValue
 from app.core.database import get_db
 from app.core.security import require_api_key
 from app.modules.ai_agent.schemas import (
@@ -8,6 +9,7 @@ from app.modules.ai_agent.schemas import (
     AIAskResponse,
     DraftPolicyRequest,
     InvestmentResearchRequest,
+    OpenClawToolInvokeRequest,
 )
 from app.modules.ai_agent.service import AIService
 
@@ -19,6 +21,25 @@ def ask(payload: AIAskRequest, db: Session = Depends(get_db)) -> dict:
     return AIService(db).ask(payload.prompt, payload.context, payload.actor, payload.source)
 
 
+@router.get("/provider-health")
+def provider_health(actor: str = ActorValue.API, db: Session = Depends(get_db)) -> dict:
+    return AIService(db).provider_health(actor=actor)
+
+
+@router.post("/openclaw/tools/invoke")
+def invoke_openclaw_tool(
+    payload: OpenClawToolInvokeRequest,
+    db: Session = Depends(get_db),
+) -> dict:
+    return AIService(db).invoke_openclaw_tool(
+        tool=payload.tool,
+        action=payload.action,
+        args=payload.args,
+        session_key=payload.session_key,
+        actor=payload.actor,
+    )
+
+
 @router.post("/draft-policy", response_model=AIAskResponse)
 def draft_policy(payload: DraftPolicyRequest, db: Session = Depends(get_db)) -> dict:
     return AIService(db).draft_policy(