```

feat: 添加飞书集成和审计API密钥认证

- 在数据库配置中添加飞书模型导入
- 添加审计API密钥配置项和认证中间件
- 实现飞书事件重复处理防止机制
- 为审批路由添加API密钥认证
- 优化AI适配器错误处理并添加JSON解析异常捕获
- 更新测试用例以包含新的认证和事件处理逻辑
```

app/modules/ai_agent/adapters.py

@@ -169,7 +169,7 @@ class HermesAdapter(AIAdapter):
             response = client.post(url, json=payload, headers=headers)
         if response.status_code >= 400:
             raise HTTPException(status_code=502, detail={AIErrorKey.HERMES: response.text})
-        data = response.json()
+        data = _chat_completion_payload(response, AIErrorKey.HERMES)
         try:
             answer = data[AIHttpPayloadKey.CHOICES][0][AIHttpPayloadKey.MESSAGE][
                 AIHttpPayloadKey.CONTENT
@@ -349,7 +349,7 @@ class DirectLLMAdapter(AIAdapter):
             response = client.post(url, json=payload, headers=headers)
         if response.status_code >= 400:
             raise HTTPException(status_code=502, detail={AIErrorKey.DIRECT_LLM: response.text})
-        data = response.json()
+        data = _chat_completion_payload(response, AIErrorKey.DIRECT_LLM)
         try:
             answer = data[AIHttpPayloadKey.CHOICES][0][AIHttpPayloadKey.MESSAGE][
                 AIHttpPayloadKey.CONTENT
@@ -399,6 +399,19 @@ def _response_payload(response: httpx.Response) -> dict[str, Any]:
     return {AIResponseKey.STATUS_CODE: response.status_code, AIResponseKey.DATA: data}
 
 
+def _chat_completion_payload(response: httpx.Response, error_key: AIErrorKey) -> dict[str, Any]:
+    try:
+        return response.json()
+    except ValueError as exc:
+        raise HTTPException(
+            status_code=502,
+            detail={
+                error_key: UNEXPECTED_HERMES_RESPONSE,
+                AIResponseKey.RAW: {AIResponseKey.TEXT: response.text},
+            },
+        ) from exc
+
+
 def _chat_messages(prompt: str, context: dict[str, Any] | None = None) -> list[dict[str, str]]:
     return [
         {