[Bug]: 有一定几率无法使用grep工具，会回退到使用命令行搜索字符串

### Summary

<img width="1309" height="980" alt="Image" src="https://github.com/user-attachments/assets/d0aee376-ab88-4e1b-94d8-22da1ecbc18e" />

### Area

Desktop app

### Reproduction or evidence

<img width="1309" height="980" alt="Image" src="https://github.com/user-attachments/assets/93a63fb0-ad58-4f07-bb8a-c86bcd9780c5" />

如图所示情况

### Environment, if relevant

_No response_