Keeps your swain skills installation up to date by pulling the latest release from GitHub, then runs swain-doctor to validate everything. Smart enough to detect which agent platforms you actually have installed so it doesn't litter your system with unused config stubs. Backs up any files you've modified before overwriting, then shows you diffs and suggests moving customizations to .agents/config where they'll survive future updates. The fallback chain is solid: tries npx first, drops to git clone if that fails, and the whole thing is idempotent so you can run it whenever. Really just maintenance automation that respects local changes instead of clobbering them.
npx skills add https://github.com/cristoslc/swain --skill swain-update