Add a Blender GLB intake inspection command

docs/blender-assets.md

@@ -48,6 +48,9 @@ python3 tools/blender_assets.py sheet   # -> docs/blender_previews/sheet_<catego
 python3 tools/blender_assets.py audit   # stdlib only; exit 1 on any issue
 python3 tools/blender_assets.py fit     # head/clothing fit + bag-body clearance, per character
 python3 tools/blender_assets.py list
+# import a GLB, apply node transforms, report geometry/bones/UVs/skinning + contract failures
+flatpak run org.blender.Blender --background \
+  --python "$PWD/tools/blender_assets.py" -- inspect --file "$PWD/tmp/downloads/x.glb"
 godot --headless --path . --import      # after any rebuild
 ```