Rewrite NPC plans around the Quaternius base

docs/asset-tooling.md

@@ -82,6 +82,8 @@ tonemapping, glow, fog, colour grading) that the phase lighting applies.
 
 NPCs are moving from the procedural capsule rig to a skinned, UV-mapped base
 character authored in Blender ([ADR-0013](adr/0013-blender-authored-npc-characters.md)).
+The active base is the CC0 Quaternius modular character, baked to the runtime contract
+([ADR-0017](adr/0017-quaternius-npc-base.md)).
 `tools/npc_pipeline.py` builds `assets/models/generated/npc_base.glb` plus the
 per-slot material maps. `NpcAvatar` instantiates that skinned model, tints its
 five material slots from the seed-driven outfit, and drives the bones from the
@@ -129,10 +131,10 @@ with colliders/avoidance and drives their emissive parts from the day/night
 cycle. The single `npc_base.glb` and primitive props remain offline fallbacks.
 Contract and integration notes: [`blender-assets.md`](blender-assets.md).
 
-Sourcing and expansion research (no external model is shipped yet):
-[`npc-model-sourcing.md`](npc-model-sourcing.md) compares Quaternius, Kenney, Khronos and
-MakeHuman sources against the character contract and records the 2026-11-03 direction
-(procedural generator first, Quaternius reference, MakeHuman deferred).
+Sourcing and migration plan: [`npc-model-sourcing.md`](npc-model-sourcing.md) records the
+2026-11-05 direction (ADR-0017). Quaternius Ultimate Modular (CC0) is the primary NPC mesh
+and animation source, baked to the existing 13-core contract; the procedural generator is
+the fallback. Kenney/Khronos/MakeHuman remain evaluated references, not active bases.
 
 | Characters | Props |
 | --- | --- |
@@ -146,7 +148,7 @@ python3 tools/blender_assets.py sheet   # docs/blender_previews/sheet_*.jpg
 python3 tools/blender_assets.py audit   # no Blender needed
 python3 tools/blender_assets.py fit     # gear-vs-body fit report
 python3 tools/blender_assets.py texels  # per-slot texel density (px/m) of the characters
-# `build --head mh` selects the MakeHuman head; the default stays `face` until rollout.
+# `build --head mh` selects the retained MakeHuman fallback head; the default is still `face`.
 godot --headless --path . --import
 ```
 
@@ -188,9 +190,9 @@ Caveats:
 
 ### Intake adaptation (`adapt`)
 
-`adapt` is the mechanical first half of an external-mesh intake (MakeHuman,
-MPFB, downloaded GLB): import, apply transforms, ground the feet, weld seam
-splits, decimate to the character budget, and export a GLB. It does **not** map
+`adapt` is the mechanical first half of an external-mesh intake (Quaternius,
+MakeHuman fallback, downloaded GLB): import, apply transforms, ground the feet,
+weld seam splits, decimate to the character budget, and export a GLB. It does **not** map
 the five tint slots or rebuild the 13-core-bone `npc_base` armature (optional extra bones are allowed) — those stay a
 manual `retopology`/`rigging` step with a recorded second-rig contract if the
 source rig cannot be retargeted:
@@ -198,14 +200,14 @@ source rig cannot be retargeted:
 ```bash
 flatpak run org.blender.Blender --background \
   --python "$PWD/tools/blender_assets.py" -- adapt \
-  --file "$PWD/tmp/npc-research/makehuman_base.glb" \
-  --out "$PWD/tmp/npc-research/makehuman_adapted.glb" \
+  --file "$PWD/tmp/npc-research/quaternius/Casual.glb" \
+  --out "$PWD/tmp/npc-research/quaternius_adapted.glb" \
   --target-tris 24000
-# prints: adapted makehuman_adapted.glb: 36972 -> 24000 tris (bones=N, meshes=1)
+# prints: adapted quaternius_adapted.glb: <source> -> 24000 tris (bones=N, meshes=1)
 ```
 
 Run `inspect` on the adapted GLB before and after, and keep the procedural
-generator as the fallback until a MakeHuman variant passes `audit`/`fit` and the
+generator as the fallback until a Quaternius variant passes `audit`/`fit` and the
 24-NPC budget.
 - Numbers are Blender-side measurements. Triangles match `audit` on project assets; the seam-split
   vertex count can differ by ±1 because the importer rounds normals. `audit` stays the single final