Audit NPC body proportions against a shared guide

Measure all eight exported characters and record the stylized proportion bands. All variants pass; no skeleton or mesh rescale was needed.

docs/npc-visual-review.md

@@ -84,6 +84,14 @@ silhouette (normal for a backpack, suspicious when it is a strap). Runtime
 `NpcAvatar.GEAR_OFFSETS` is applied after attachment and is not part of the GLB
 measurement.
 
+## Proportion audit
+
+The separate [`npc-proportion-audit.md`](npc-proportion-audit.md) measures
+height, head size, shoulder/hip width, torso, leg, arm and foot ratios for every
+variant with `tools/npc_proportions.py`. All eight pass the stylized guide; the
+head and broad-build shoulders sit nearest their upper bounds. No skeleton or
+mesh proportion change was needed in this pass.
+
 ## Baseline measurements
 
 From `python3 tools/blender_assets.py fit` and the manifest: