Replaces the unsigned SMB-policystore auto-sync (enforcer blindly sourced
whatever .sh files sat on the share, no integrity check) with a dedicated
git-over-SSH server plus GPG commit signing: nodes pull on a timer, verify
every commit's signature and fast-forward history before an unprivileged
puller account hands off to root via one exact scoped sudo command, and a
fetch failure is a safe no-op that keeps the last-known-good policy running.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>