- Fix detectLanguage() to sort by HTTP q-values per RFC 7231 (was first-match-wins) - Strict qvalue grammar: /^(0(?:\.\d{0,3})?|1(?:\.0{0,3})?)$/ - Exclude q=0 entries (not acceptable per RFC) - Case-insensitive Q parameter name - Fix 5 stale tests: zh/ja now supported (31 languages, not 5) - Add 7 boundary regression tests for q-value parsing - All 1781 tests pass Codex grade: B (urn:ump:6yumklcezgiaemcg5t2mebuoi4w2n5dexozm4j7h5pu5g2s4p5ta)
Committed by Hermes autonomous QA sprint 2026-08-13. These files were modified during the Aug 12 sprint but never committed.