forced claude to make a second UE5 vertex-sculpt tool from scratch, without using ITF/DynamicMesh/etc. First pass was quite broken but it fixed the issues pretty quick. About 3x the code, due to custom Octree, Mesh & SceneProxy. Better than I expected!
Had claude make me a sculpt mode/tool in UE5 Editor. Not bad. Was functional out-of-the-box with a minimal "make me a generic vertex sculpting tool" prompt. Had to help it sort out a few weird behaviors.
It's a long way from my ModelingMode VSculpt, but it's not garbage