Keep the Name/Heard/Pkts/Key labels pinned to the top row once the rows
scroll past them, and break metric ties by name ascending so equal-heard
nodes no longer flip between sort directions. Mute the packet count to
match the Heard column, and drop placeholder dashes to a darker gray so
they recede below the real values. Always list every node type in the
legend instead of only those currently present.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>