- ocr-service/README.md: add HF_HOME, XDG_CACHE_HOME, TORCH_HOME, TMPDIR rows
to the environment variables table
- ocr-service/CLAUDE.md: LLM reminder — TMPDIR must stay on the cache volume
- docs/adr/021-tmpdir-persistent-volume-staging.md: records the decision,
trade-offs, and rejected alternatives (Approach B / C) for issue #614
- ci.yml: add test_tmpdir.py to the OCR CI run (stdlib-only tests, no ML stack)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
