nx_biotwin_morphometrics_gate.nx

nx_biotwin_morphometrics_gate.nx -- the LIAR-KILL gate for the morphometric-derivation organ (board axis 8). Grades a MEASUREMENT engine in a medical domain, so it must be impossible to rubber-stamp. The gate does NOT trust the organ's self-report: it RE-DERIVES the axes itself through the same shared library and checks the values against the BANKED canon (a known-answer test on real SDF geometry). Teeth: T1 ARTIFACT EXISTS -- the organ ran and wrote knowledge/nx_biotwin_morphometrics.json. T2 CANON KNOWN-ANSWER -- gate re-derives preset 0; every axis must land in its banked canon band. This is the correctness tooth AND the negative-control target: a wrong transform in the lib drives a value out of band -> RED (proven by the mutation test). T3 PROVENANCE PUBLISHED -- the emitted artifact carries a transform + inputs for EVERY axis (grep count). T4 DETERMINISM -- two independent derivations hash identically (the sovereign bit-exact exceed). T5 THE FENCE IS ALIVE -- bm_fence_blocked()>=1 live in THIS run (the promotion clamp fires), the board's axis-21 planted lie + clamp still stand in source, and the artifact publishes morpho_fence_blocked. T6 CROSS-BODY GENERALISE-- the same engine on 3 body presets: statures differ (it reads real geometry) yet heads-tall stays canon-valid on every body (it did not overfit to one human). license_tier: ORIGINAL expect_exit: 0