The pending-bytes panel described itself as the leading indicator for
the slow-consumer stat 'beside it', and then sat alone in its own row
with eighteen grid units of empty space. A description that tells the
reader to look beside it, where nothing is, is worse than no
description.
Slow consumers and pending bytes are now adjacent in the top row, and
the two JetStream panels share the second. No gaps.
Split out of the combined swarm-services board, which mara declined as
multiple dashboards in one trench coat. Its 17 panels partition exactly
by subject -- 3 services / 5 metrics store / 5 queue / 4 log store, with
no panel belonging to two -- so this is a re-cut of verified panels, not
new authoring.
Seven panels: connections, subscriptions, slow consumers and JetStream
API errors as stats, messages over the range, plus pending bytes (the
leading indicator for a slow consumer) and JetStream store size against
its configured limit (the only capacity question the queue has).
Connections is red at zero, unlike every other count here: three things
hold a connection at all times, so an empty count means the queue is
refusing everyone -- and a callout denial reaches a client as a timeout
rather than an error, which makes this often the first visible sign.
