修复考勤管理bug并加强了信息保护

backend/models/user.py

@@ -105,4 +105,11 @@ class UserModel:
         """更新用户状态（0=禁用，1=启用）"""
         sql = "UPDATE users SET status = %s WHERE user_id = %s"
         result = await execute_update(sql, (status, user_id))
+        return result > 0
+    
+    @staticmethod
+    async def update_real_name(user_id: int, real_name: str) -> bool:
+        """更新用户真实姓名"""
+        sql = "UPDATE users SET real_name = %s WHERE user_id = %s"
+        result = await execute_update(sql, (real_name, user_id))
         return result > 0