chore: format code and remove redundant blank lines

This commit applies automated code formatting across the project. The changes primarily involve removing unnecessary blank lines and ensuring consistent code style, improving readability and maintainability without altering functionality.

src/schedule/schedule_manager.py

@@ -165,14 +165,16 @@ class ScheduleManager:
                         schedule_str = f"已成功加载今天的日程 ({today_str})：\n"
                         if self.today_schedule:
                             for item in self.today_schedule:
-                                schedule_str += f"  - {item.get('time_range', '未知时间')}: {item.get('activity', '未知活动')}\n"
+                                schedule_str += (
+                                    f"  - {item.get('time_range', '未知时间')}: {item.get('activity', '未知活动')}\n"
+                                )
                         logger.info(schedule_str)
                         return  # 成功加载，直接返回
                     else:
                         logger.warning("数据库中的日程数据格式无效，将重新生成日程")
                 else:
                     logger.info(f"数据库中未找到今天的日程 ({today_str})，将调用 LLM 生成。")
-            
+
             # 仅在需要时生成
             await self.generate_and_save_schedule()