The health box and the summary were drawn only once every check in a
round had ended, so a target that never answers held them back until
its timeout, after the rows already showed the network was back. tick
now redraws both with each WAN host's row. The "Health:" debug log line
moved from updateHealthBox to the end of the round, so it is still
written once per round, and still only once a WAN host's check is
recorded.
Model: opus-5-5
sneak