Google Vertex AI的access token获取接口补上说明

src/BowongModalFunctions/router/google.py

@@ -138,8 +138,11 @@ async def list_files(headers: Annotated[GoogleAPIKeyHeaders, Header()]):
     return JSONResponse(content=response.json() if len(response.text) > 0 else "", status_code=response.status_code)
 
 
-@router.get('/access-token', summary="获取一个新的Google Access Token", dependencies=[Depends(verify_token)])
+@router.get('/access-token', summary="获取一个新的Google Access Token",
+            description="获取的Access Token最多同时存在35000个",
+            dependencies=[Depends(verify_token)])
 async def get_access_token() -> GoogleAuthUtils.GoogleAuthResponse:
+    # GOOGLE_AUTH_JSON 通过modal secrets 配置
     service_account_json = os.environ.get("GOOGLE_AUTH_JSON", None)
     if not service_account_json:
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Missing Google IAM Service Account JSON")