v0.12.0

screenshot renders .yft fragments with their wheels and physics children: the body is posed by the fragment's bone transforms and every child with a mesh is placed by its physics transform. Empty wheel slots borrow the front/rear wheel mesh; right-hand wheels are mirrored. The summary line reports part and wheel counts (e.g. 5 parts (4 wheels)). Built on rpf-archive 0.9.0.