nx_anat_consistency_gate.nx

nx_anat_consistency_gate.nx -- ★CROSS-ARTIFACT ANATOMY CHECK (2026-07-27). Two organs in this codebase independently describe where a human's joints are: nx_skelgen -- generates a rest skeleton from anthropometric rules, emits J rows in millimetres nx_bodyatlas -- a ZygoteBody-style peelable being with its OWN skeleton pivots, authored months earlier for an unrelated purpose ★★NOBODY HAD EVER COMPARED THEM, and on 2026-07-27 that cost was measured: nx_skelgen's acromion sat at 120 per-mille of stature while this atlas's own shoulder pivot sits at 206 -- a disagreement of about 150mm on a 1750mm body, shipped and green in both organs for as long as both existed. ★THE PRINCIPLE THIS ENFORCES is the one nx_skelgen already states about its own internals: two tables cannot disagree when there is only one table -- and where a second table is legitimate (a different representation for a different job), it must be CHECKED rather than trusted. Both sides are converted to PER-MILLE OF THEIR OWN STATURE first, so the comparison is scale-free and neither organ's unit system is privileged. ⚠WHAT THIS DOES **NOT** ASSERT: that the two must be identical. A shoulder JOINT CENTRE is legitimately inboard of an ACROMION, so the girdle check is a BRACKET (joint <= acromion <= bony outer edge), not an equality. Asserting equality there would force one of two correct numbers to become wrong. nx_anat_consistency_gate <skel.dat> (the file nx_skelgen writes) license_tier: ORIGINAL expect_exit: 0 No hw writes (Rule 26).