Chat input window, cannot list files in current workdir

[yifenglong-dev]

Problem:
In frontend page, it responses code 403 when invoking "/api/fs/list" api to fetch file list in current workdir.

Version:
aioncore-v0.1.30

api:
/api/fs/list

request params:
{
"root": "E:\git_new\test"
}

response:
{
"success": false,
"error": "Path is outside the allowed sandbox.",
"code": "PATH_OUTSIDE_SANDBOX",
"details": {
"field": "path",
"operation": "access"
}
}

Guess the reason：

1. The extra.workspace for the session is E:\git_new\test
   The frontend calls POST /api/fs/list with the workspace path, body: {"root": "E:\git_new\test"}
2. The backend list_workspace_files uses allowed_roots (only containing temp_dir + home_dir + work_dir) for sandbox verification
3. E:\git_new\test is not under allowed_roots → return PATH_OUTSIDE_SANDBOX