Bake the rest pose, warp to the contract, and record the failing silhouette gate

TODO.md

@@ -72,9 +72,14 @@ baseline sheet.
       Head←Head, Shoulder←UpperArm (collar collapses), Elbow←LowerArm, Hand←Wrist,
       Hip←UpperLeg, Knee←LowerLeg. Optional: 30 finger bones + Foot.L/R (toe); dropped: PT.L/R
       pole targets. Quaternius hierarchy measured (Foot is a child of Root, not LowerLeg).
-- [ ] Bake the rest pose and proportion warp to the contract hip, knee, shoulder, elbow,
+- [x] Bake the rest pose and proportion warp to the contract hip, knee, shoulder, elbow,
       wrist and head positions. Measure the warp at every joint and record the silhouette
       deltas; do not accept a distorted deltoid or shortened arm.
+      Arm-down bake works (`warp_full.py`: pose-rotate UpperArm −90° + modifier-apply +
+      `armature_apply`). Warp deltas recorded in `docs/npc-model-sourcing.md`: arm ×1.63,
+      leg ×0.74, torso ×1.61, hip −0.249, shoulder +0.122. Vision-judged as distorted
+      (paddle hands, lost forearms, stretched shins). **Gate fails — Stage 2 (62-joint runtime
+      ADR) indicated; do not rebuild on the warped base.**
 - [ ] Skin the Quaternius mesh and verify Idle, Walk, seated and arm-down poses. The old
       MPFB/arm-retarget warps are not a reference; judge the Quaternius result directly.
 - [ ] Retarget Idle and Walk from the 24 Quaternius clips to the contract rig; discard