Group readiness cards by node so updates pending on every reachable node
are visible without having to switch the active node. Apply now targets
the owning node directly, and Recheck fans out to every reachable node
in parallel; per-node cooldowns are surfaced in the toast.
Adds POST /image-updates/fleet/refresh and invalidates the fleet
aggregation cache after auto-update execute so the next read reflects
the new state immediately. A small banner appears under the hero when
some online nodes did not respond within the request timeout.
Anso
58df1a50b3
