【bug】 xhs notifications 命令会失败

环境 macos，其他命令正常，但 notifications 命令有问题
```
✗ API error: {"code": -1, "success": false}
```

Start by reproducing the failure on macOS with the notifications command and trace the request that produces the reported API error. The issue is resolved when notifications completes successfully without the error; no source file or test is named, so locating the command entry point and expected API behavior is part of the investigation.

Written by the indexing model from the issue text.