The settings folder picker could only select existing directories, so
creating a model root meant leaving the UI to create the folder first.
- Add POST /api/lm/create-directory, backed by create_directory() in
py/utils/directory_browser.py: it creates one subfolder of the browsed
directory and rejects names that are not a single safe path segment
(separators, dot names, Windows-invalid characters and reserved names,
over-long names) plus duplicates, missing/non-directory parents and
permission errors, each with a stable error_code.
- Add a New Folder button and an inline name row to the picker; the
created folder is entered immediately so it can be selected with one
click. Esc dismisses the row before closing the modal, and the button
is disabled on the Windows drive-list level where there is no
directory to create in.
- Map the server error codes to localized picker messages.
- Cover the endpoint and the picker flow with backend and frontend tests.
Will Miao
fa6712cff9