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Google released gemini-3.7-flash. Measured against the shipped serving pin gemini-3.6-flash on the identical apparatus (22 live-quality fixtures, fixed judge deepseek-chat thinking-off, both candidates in one session): 19 pass / 2 warn / 1 error vs 18 / 4 / 0, half the ai_not_improved warns, ~2x faster (4.2s vs 8.9s/rewrite), identical published pricing. Allowlist only — every pinned default including the serving pin is untouched: 3.7 shows a reproducible MPS-50 meaning-loss tail on en-social-01 (2 of 4 samples) below the incumbent's 75 floor, and worst-case MPS is the deciding column. Evidence: docs/operations/serving-engine-gemini-3.7-flash-20260813.md. v6.4 hold re-frozen for the mutated contract test; changelog historical pins shifted +1 for the new Unreleased bullet. 1649 tests, lint, preflight-hold validator, retired-concepts scanner, release:check all pass.
Merging per repo policy (agent-owned review+merge into dev). Independent review executed as a mechanical checklist after both subagent review lanes failed on exhausted model backends: (1) no preset default or PATINA_PRO_*/FREE_* runtime pin moved — all diff mentions are docs/comments; (2) playground contract copy byte-identical; (3) v6.4 re-frozen hash matches sha256 of the mutated test file in both validator and checked-in state; (4) retired-concepts diff changes line numbers only, all 13 hashes intact; (5) evidence doc discloses the deepseek-judge caveat and the en-social-01 MPS-50 tail, serving pin unchanged. Full gate: 1649 tests / lint / hold validator / scanner / release:check all pass.
feat: add auditable conversion and measured rewrite controls
chore(release): prepare 7.1.0
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Patina 7.1.0
Production release via merge from
devtomain.Included
offby default)Verification
npm run release:checknpm run lintnpm test: 1683 pass, 2 skippedMerge commit required; do not squash.