test: smoke harness for KB registry + loop matcher (task C-01)
scripts/smoke.mjs imports real kb/index.js + match.js: asserts registry integrity
(unique ids, consistent lengths, guitar present) and matcher correctness (ii-V-I + its
rotation -> same id, axis match, chromatic -> no-match, findLoopPosition bounds). Exits
non-zero on failure, mirrors validate-kb. Critic adversarially confirmed it catches a
broken matcher. Ids derived from KB (survives growth).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
vadimwit
66a06b2884