Resolves the SonarCloud quality gate (new_security_hotspots_reviewed) — the 7
TO_REVIEW hotspots were all `http://gw` fake gateway URLs in test_ocr_processor.py
flagged "use https". Switched the test fixtures to `https://gw` (identical for a
fake URL) so no new hotspots remain to review; all other gate conditions already
passed.
Also address claude-review round 6:
- Stale test docstring: "suppresses to ocr" -> "suppresses to the cheapest
registered OCR rung (here ocr-upstream)".
- OcrProcessor.__init__: comment that the upstream-shaped defaults are
test/bare-construction convenience only; app wiring always passes args
explicitly.
Left as-is (reviewer agreed): the `ocric=` signature abbreviation (opaque but
stable; renaming would invalidate dead-letter retries).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
