Raise character limits and document optional Blender MCP

docs/adr/0015-npc-model-variety-sourcing.md

@@ -70,3 +70,14 @@ measured. None was a drop-in; the full results are in
   polygon count, no rig in the base mesh and a separate authoring dependency.
 - **Use Mixamo or Ready Player Me.** Rejected: service terms are not a simple
   free/open-source redistribution basis for shipped meshes.
+
+## Amendment 2026-11-04
+
+- The character budget is raised to **16,000 triangles / 16,000 glTF vertices** per character.
+  The required 13 core bones remain; optional extra bones (fingers, face, toes) are allowed if
+  they do not move the core rest positions. The low-poly fallback remains the fallback, not a
+  second contract.
+- MakeHuman is now an active local development pipeline (body retarget plus project-owned
+  head/hands), while the procedural library remains the shipped path and CI fallback.
+- Blender MCP is optional interactive tooling only; it is not a build, CI, test or runtime
+  dependency. Setup is in [`docs/blender-mcp.md`](../blender-mcp.md).