Address claude-review round 5 on #922 (verdict: good to merge after the docstring):
- BatchPending docstring: the deferred job stays on its own `(ocr-upstream)` tier
queue, not the retired `(ocr)` — batch mode is the upstream Mistral path only.
- classifier.py: clarify that `recommended_tier == "ocr"` is the classifier's
COARSE vocabulary ("needs OCR"), resolved to a concrete rung
(ocr-incluster -> ocr-upstream) by the registry — NOT a TIER_LADDER tier name.
- Added test_evaluate_escalation_suppressed_targets_incluster_four_rung: with both
OCR rungs registered but both flags off, the suppressed what-if-OCR signal names
the cheapest ideal rung (ocr-incluster), not ocr-upstream.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
