A row's one dot said how the LAST run went, and an interrupted run fell through to "idle" — a grey dot
that read as "no run recorded". The row now leads with its last three runs, newest first, each named
for a screen reader and in its tooltip (how it went, when, who started it); an interrupted run is a
ring, set apart from a skipped run and a failure, and its line says the server restarted under it.
A channel's full-history backfill gets its own "Ad-hoc runs" block: its runs, its channel and what
it fetched, no interval and no run button — it needs its target. AD_HOC_JOBS names every such job;
the backend-id contract holds their names in both languages, and run_ad_hoc refuses any other id.