super-prototyping 1.0.0

2026-09-05, the release that packaged this repo as a plugin. The plugin ships
code and a project keeps only its own boards, so installing it does not drop
this repo's example canvases into your project. Installing is two halves: your
product's own plugin command for the skills and the canvas, and one
uv tool install for refkit, artgen and sp-canvas. sp-canvas starts
the canvas against whichever boards directory it is pointed at, and the canvas
keys its saved state per project, so two projects do not share a camera or a
comment. Declaring the marketplace with sparsePaths installs only the
directories you name, for anyone who wants the canvas and the toolkit without
the worked examples.

Tagged after the fact, at 0286f19, where that work ended. Nine pull requests
landed on main between then and the tag being cut, so this tag holds the
packaging and not the canvas work that followed it.