- quant jobs now appear on the Tasks page (api_tasks emits kind=quantize) and as
  a live badge on the HF model-list row (polled; re-renders only on change).
- persist job state to <cache>/quantized/jobs.json; on startup a job left
  "running" is marked "interrupted" only if its owning PID is dead (merge-safe
  save so multiple processes don't clobber each other).
- gitignore the runtime model cache (models/), logs/, and the third-party
  GPTQModel/ source clone (installed into the venv, not part of this repo).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>