run the thirdparty superpowers snapshot updater on a daily schedule.
trigger sync-superpowers automatically when thirdparty/skill is updated and cover the new automation with workflow tests.
remove the stale superpowers list block from SKILLS.md so the document routes to the source list only.
clear assume-unchanged and skip-worktree flags in the sync workflow before refreshing the workspace, and add a regression test for that safeguard.
csh