Introduce a status masthead above the node grid summarising fleet-wide
CPU, memory, container, and alert counts with a coloured rail that
reflects overall health. Pin the local node at the top of the grid with
a cyan accent rail and a Local badge so it is never confused with a
remote. Add a Topology view toggle that plots the local node on the
left with remotes radiating out, and colour-codes connector lines by
link health.