A hash whose node nobody can name reads whole in node.unknown — path
lines, key lanes, the walk, the packet card, the arrivals — never in a
hue its bytes would derive, exactly as the path graph already drew it.
highlighted_hash gains a known flag; the two path widgets decide it from
their resolver, and the node page threads it per hop.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>