Decide the Quaternius outfit scope: three full GLBs first, modular builder as the role fallback

TODO.md

@@ -53,8 +53,11 @@ baseline sheet.
       (Body/Feet/Head/Legs, 10.5k–13.0k verts), 62 joints (8 spine + 8 arm + 2 PT + 30 finger +
       6 leg), 24 shared clips (retarget scope: Idle + Walk), and the material→slot map by mesh
       region (Skin→skin; head hair→hair; body→cloth; legs→pants; feet→accessory).
-- [ ] Choose the initial outfit scope: build the three full GLBs first; only use the 21-part
+- [x] Choose the initial outfit scope: build the three full GLBs first; only use the 21-part
       modular builder if the three looks cannot cover the 12 roles.
+      Decided: the three full GLBs are the canonical-base + silhouette-gate scope. They cover
+      ~3 of 12 roles (casual, hood, vest); jacket/coat/dress/responder/guard need the 21-part
+      modular builder or new clothing at §4. Recorded in `docs/npc-model-sourcing.md`.
 - [ ] Build a canonical `quaternius_base.glb`: one welded, triangulated, grounded 1.81 m
       humanoid with front on Blender −Y, no animation, and a documented bone/part inventory.