.github/workflows/release.yml builds on a pushed v* tag (or by hand) and attaches everything to a
GitHub release, a pre-release while the version is 0.x, with .github/release-notes.md. The
packaging lives in .github/release/package-{linux,macos}.sh so it can be run locally; the
AppImage icon is rendered by solvecraft-cli from the bracket example.
Fixes #32
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>