The forge restarted (new forgejo PID at 12:36), so it re-read [metrics]
and gitea_issues_by_label now exists -- 24 series carrying real label
names, read back out of the store rather than inferred from the metric
name appearing in a label-values list.
The panel shipped deliberately empty with EMPTY UNTIL THE FORGE RESTARTS
in its title and a matching noValue, because an empty graph and an
undeployed metric look identical. That warning is now false, and a stale
warning is worse than none: it tells a reader the panel cannot have data
at the moment it does.
Keeps the operational half rather than deleting it -- the restart
requirement is a fact about the NEXT metric someone enables, so it moves
into the description as a note and into noValue, where it fires only when
the series really is missing.