[bug]agent运行时长统计有误

<img width="527" height="257" alt="Image" src="https://github.com/user-attachments/assets/abe37bfa-931b-4c90-8d26-1224083a4b1c" />


cc-switch 看的实际开始跟结束时间
<img width="848" height="271" alt="Image" src="https://github.com/user-attachments/assets/77f5ae6a-92b7-4687-8d40-b6fee107f93e" />