Address claude-review round 2 on #922:
- Legacy `ingest-ocr` tier resolution (important 1): document why it deliberately
resolves to `fast` rather than mapping to `ocr-upstream` — stranded pre-split
jobs re-extract empty and re-escalate via the ladder to the cheap
`ocr-incluster` rung, keeping them OFF the paid upstream rung. Added a
tier_for_queue(LEGACY_INGEST_QUEUE_OCR) == "fast" assertion.
- Double get_settings() in `_get_batch_client` (important 2): bind once to a local.
- Stale docstrings (important 3): OcrProcessor (serves both rungs now),
_tier_available (both OCR rungs gated), evaluate_escalation (targets
ocr-incluster, falls through to ocr-upstream).
- Misconfigured model_setting (nit 5): OcrProcessor.__init__ raises ValueError on
an unknown settings attr (fail-fast at startup vs AttributeError mid-OCR); also
removes the dynamic-getattr static-analysis smell SonarCloud flagged.
- Redundant guard (nit 4): kept `and ocr_tier is not None` — it's required for ty
to narrow ocr_tier to str for record_document_escalation; added a comment.
- Test gap (nit 6): added a test pinning the CURRENT incluster-failure ->
tier-1 fallback (does NOT cascade to upstream) so the future 503-escalation
change is an explicit diff.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
