Expose Auto-Organize on the Workflows page and give workflows their own
download path template, which both downloads and Auto-Organize use.
- Add a `workflow` default ({base_model}) to the backend and frontend path
template constants. Local workflows rarely carry CivitAI tags, so the
default stops at the base model instead of adding a "no tags" segment.
- Enable the bulk Auto-Organize action for workflows; the shared endpoint
and scanner move already handled them, only the UI gate was missing.
- Add the workflow row to Settings > Organization, rendered hidden and
toggled by the existing Workflow management master switch so the config
only appears while the feature is enabled.
- Preview workflow templates with a .json artifact name instead of a
weight-file name.
- Cover the default template, download routing, both auto-organize modes,
sidecar moves, and the settings gate with tests.