Adopt and maintain the apache-magpie framework in a project repo via the snapshot-based adoption mechanism. The only framework skill committed in an adopter's repo; every other skill is a symlink the adopt sub-action wires up. Sub-actions: `/magpie-setup` - first-time adoption (default; main-check
Adopt and maintain the apache-magpie framework in a project repo via the snapshot-based adoption mechanism. The only framework skill committed in an adopter's repo; every other skill is a symlink the adopt sub-action wires up. Sub-actions: `/magpie-setup` - first-time adoption (default; main-checkout only) `/magpie-setup upgrade` - refresh the gitignored snapshot per the committed lock (main-c