Add per-model-type filename templates ({model_name}, {version_name},
{base_model}, {author}, {first_tag}, {hash_short}, {original_name}) so
downloaded files get informative names instead of e.g. V1.safetensors.
Empty template keeps the current filename (opt-in, off by default).
- apply template automatically after downloads; rename conflicts keep
the original name and never fail the download
- record original_file_name in metadata on rename for traceability
- bulk apply via GET|POST /api/lm/{prefix}/apply-filename-template with
WebSocket progress, sharing the auto-organize lock
- settings UI lives in the new Organization tab with validation, live
preview, and per-type 'apply to library' actions
Add a reusable directory-picker modal backed by a new generic
POST /api/lm/browse-directory endpoint (browse logic extracted from the
recipe batch-import handler into py/utils/directory_browser.py) and wire
a browse button plus advisory validate-path feedback (POST
/api/lm/validate-path) into the settings path inputs: recipes path,
example images path/local root, and the extra-folder/model-path rows.
The browse button insets into the right edge of static inputs so narrow
settings rows keep their single-control layout.
Translations for the new settings.directoryPicker and
settings.pathValidation keys are filled in for all 9 locales.