3D Spanning Trees
I was treating meshes as graphs, and deleting the faces off an OBJ leaves the edges, which is enough to run Kruskal's algorithm on.
Independent development. Java graph algorithms and a Blender add-on.
The tree comes back out as OBJ you can open in Blender, and there's a Blender add-on in the releases if you'd rather not leave it.
Four small Java classes, written in 2023. I haven't needed to touch it since, though the compiled classes from that build are still sitting in the repo.
State
A small tool and an add-on, released in 2023.