WIP-CHECKPOINT[auth-refactor]: 固化工程师崩溃前部分成果 + 同树其他未提交WIP（仅源码，不含密钥/二进制）-- 待重激活工程师续作

backend/app/services/message_router.py

@@ -612,6 +612,27 @@ class MessageRouter:
         self.db.add(conversation)
         await self.db.flush()  # 刷新以获取生成的 ID
 
+        # 创建会话后，尝试从 employees 表获取员工信息（作为回退）
+        try:
+            from app.models.employee import Employee
+            stmt = select(Employee).where(Employee.employee_id == employee_id)
+            result = await self.db.execute(stmt)
+            employee = result.scalars().first()
+            if employee and employee.name:
+                conversation.employee_name = employee.name
+                conversation.department = employee.department or ""
+                conversation.position = employee.position or ""
+                conversation.level = employee.level or ""
+                logger.info(
+                    f"从employees表获取员工信息: employee_id={employee_id}, "
+                    f"name={employee.name}"
+                )
+        except Exception as e:
+            logger.warning(
+                f"从employees表获取员工信息失败: employee_id={employee_id}, "
+                f"error={e}"
+            )
+
         logger.info(
             f"创建新会话: conv_id={conversation.id}, "
             f"employee_id={employee_id}, status=ai_handling"
@@ -669,3 +690,26 @@ class MessageRouter:
                 f"VIP检测失败（不阻塞流程）: employee_id={conversation.employee_id}, "
                 f"error={e}"
             )
+            # 企微API失败时，从employees表回退获取员工信息
+            try:
+                from sqlalchemy import select
+                from app.models.employee import Employee
+                stmt = select(Employee).where(
+                    Employee.employee_id == conversation.employee_id
+                )
+                result = await self.db.execute(stmt)
+                employee = result.scalars().first()
+                if employee and employee.name:
+                    conversation.employee_name = employee.name
+                    conversation.department = employee.department or ""
+                    conversation.position = employee.position or ""
+                    conversation.level = employee.level or ""
+                    logger.info(
+                        f"从employees表回退获取员工信息: employee_id={conversation.employee_id}, "
+                        f"name={employee.name}"
+                    )
+            except Exception as fallback_error:
+                logger.warning(
+                    f"从employees表回退获取员工信息失败: employee_id={conversation.employee_id}, "
+                    f"error={fallback_error}"
+                )