[add] Throw out explicit error messages; Using the CST time zone

api/app/tasks.py

@@ -2256,7 +2256,14 @@ def update_implicit_emotions_storage(self) -> Dict[str, Any]:
                 _redis_client = get_sync_redis_client()
 
                 # 只处理 last_done > updated_at 的用户（有新记忆写入的用户）
-                for end_user_id in repo.get_users_needing_refresh(_redis_client, batch_size=100):
+                # Redis 不可用时回退到全量处理
+                try:
+                    refresh_iter = repo.get_users_needing_refresh(_redis_client, batch_size=100)
+                except RuntimeError as e:
+                    logger.warning(f"时间轴筛选不可用，回退到全量刷新: {e}")
+                    refresh_iter = repo.get_all_user_ids(batch_size=100)
+
+                for end_user_id in refresh_iter:
                     logger.info(f"开始处理用户: {end_user_id}")
                     user_start_time = time.time()