Consolidate documentation into architecture and merged guides

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

@@ -80,4 +80,4 @@ measured. None was a drop-in; the full results are in
 - 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).
+  dependency. Setup is in [`docs/asset-tooling.md#optional-interactive-blender-mcp`](../asset-tooling.md#optional-interactive-blender-mcp).