bug: cindy 长时间运行+多定时任务有，导致mac资源开销很大，且温度很高

### 问题描述 / What happened

急需性能和资源开销优化！！！！！！！！！！！！！！

### 环境 / Environment

- Cindy 版本或 commit / version or commit:
- 平台与版本 / platform & OS version:
- 安装方式 / install method:

### 复现步骤 / Steps to reproduce

多定时任务 =高频使用

### 日志与截图 / Logs & screenshots

_No response_

No file, test, or diagnostic is named. Start by reproducing the issue on macOS with multiple high-frequency scheduled tasks running for an extended period, while measuring CPU, memory, and temperature; done means resource usage and heat are reduced and the behavior is covered by reproducible measurements.

Written by the indexing model from the issue text.