runner install is convergent by skipping: it sees a registered runner and
leaves it alone. So rig could create a runner and never move or destroy one,
and re-pointing a box at a different repo meant hand-rolled config.sh/svc.sh
incantations against an install layout only rig knew about.
- status: repo, name, labels, dir, unit — read-only, no token, no network.
- remove: service down, then deregister. --local wipes the box without
contacting GitHub, leaving a stale entry to delete by hand.
- repoint: remove + re-register in one act, keeping the runner's name and
reusing the binary already on the box.
The service always comes down before deregistration in both paths: GitHub's
removal throws "Uninstall service first" while the service is configured, and
--local bypasses that check entirely, which would strand a running service
pointed at deleted config.
repoint collects both tokens up front — a token you turn out not to have must
fail while the runner is still registered, not halfway through the move.
Labels are the sharp edge: GitHub holds them, the runner does not persist
them, and they are what runs-on matches. install now records what it
registered with so repoint and status can read it back; a runner installed
before that has nothing to read, so repoint falls back to the ci-runner
default and warns before it touches anything.