Live-audit fixes for the Models settings surface — the P1s were cases where
the feature silently didn't work for the user.
P1-A — Async install errors were invisible. The `install_error` SSE event
carries excellent mirror-aware text (#890 core/failure.py), but the Model
Store auto-purged the errored row ~800ms later (same as a success) and the
first-run WizardLibrary DELETED the row without ever reading `ev.error`. The
SSE→rowState reduction is now a pure, tested reducer (downloadReducer.js /
reduceWizardDownloadEvent); only SUCCESS terminals auto-purge
(isAutoPurgeTerminal), an error persists on the row with inline text + Retry +
Dismiss (Model Store) / a Retry (wizard).
P1-B — No disk-space check on install. `POST /models/install` now compares the
FDL-05 plan's exact `to_download_bytes` (+ MIN_FREE_GB headroom) against
`shutil.disk_usage(cache).free` BEFORE downloading and emits an actionable
install_error naming the sizes (needs X, headroom Y, have Z) instead of failing
mid-download. `/models` also surfaces `disk_free_gb` in the header. MIN_FREE_GB
+ disk_free_bytes are single-sourced in setup/models.py (wizard delegates).
P2-A — Wired the orphaned cancel. `POST /models/install/cancel` (FDL-11) had
zero frontend refs; the in-progress row now shows a Cancel button that calls it
and transitions the row to install_cancelled.
P2-B — Honest restart_required. The HF-mirror PUT returned restart_required:true
unconditionally; it now returns true only when the persisted value actually
changed, with accurate copy (Model Store downloads use the new mirror
immediately — resolved per-call; only transformers model loads need a restart).
P3 — i18n the un-localized panels (HFMirrorPanel, ApiKeysPanel source
labels/help/status, MODEL_ROLE_LABEL) via new en.json keys; other locales fall
back to en.
Tests: new tests/test_install_disk_space.py (reject-when-over-budget incl. the
worker wiring; allow-when-fits; degrade on unknown size/unprobeable volume),
updated tests/test_hf_mirror_settings.py (change-only restart_required), and new
frontend reducer + column-render tests for install_error persistence, Retry,
Dismiss, and Cancel.
Co-authored-by: mergetest <test@local>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
debpalash