gatekeep/docs/deploy-slots.md

Deploy slots (stub — later)

Gatekeep’s PR Action does not perform production rollback. Ops keeps two slots:

Slot	Role
current / active	What players/users hit now
previous	Last known-good artifact for one-command swap

v1 note only: wire symlink or compose services outside this Action; record previous_good_sha on every deploy; PR template “How to revert” points operators here. Auto-rollback stays human-confirm by default except crash-loop burn-in (see Project rollback design).

Artifact retention for review/verify jobs uses actions/upload-artifact (gatekeep-last-good-<run_id>, 14 days) — that is CI evidence, not the production slot.