0.73.0-alpha · core 2026-10-05

Red-first kill-switch (config.red_first: strict|advisory|off). Single source of truth for acceptance-test-first enforcement, with STELOW_RED_FIRST env override and quality defaults (production→strict, experimental→advisory). seed --red-first, config get/set red_first (the only writable field).
Acceptance contract evidence. Scope contracts carry test_map/freeze_sha/red_proof/baseline (schema + types in parity); scope done refuses without the three in strict, warns in advisory, test-\* scopes block feature close; pre-commit record check v3.
Testing gates. BLOCK: missing acceptance test, hand-mutation MUST FAIL, RED→RED-PROOF→FREEZE→GREEN, fresh-oracle rule, audit flags for baseline-empty/red-missing/frozen-edited.