Refresh Public Repo

Force a re-index of any public repo, with no library link required.

Bypasses the weekly per-repo cooldown and the daily fleet ceiling that gate the anonymous refresh arm: both exist to bound anonymous spend, and neither describes an operator acting deliberately on one repo. The in-flight debounce still applies, and the failure backoff still applies unless force is set.

Runs as requested_by="admin", which is what makes the resulting snapshot fan out to every linked user rather than to the caller — who, on a repo they do not own, has no link row to fan out to.