Boxer anatomy attribution

The modified head geometry incorporates LPS Head (Lee Perry-Smith),
Copyright I-R Entertainment Ltd., licensed under Creative Commons Attribution 3.0:
https://creativecommons.org/licenses/by/3.0/
Original creators: Lee Perry-Smith / Infinite-Realities.
Source: https://casual-effects.com/g3d/data10/research/model/lpshead/
Runtime source obtained from the Three.js examples LeePerrySmith.glb.

Changes: torso removed; head proportioned and reshaped for the Sparr boxer;
orbital mounting surfaces, skin tint, expression targets, and occlusion bake added.
The hair, garments, gloves and articulated render surfaces are Sparr-authored.

Hair fiber texture: AI-generated opaque material swatch for the 3D hair UVs.