Each node becomes a card: title over a fixed two-line zone (every card's
rows align), the agent's consumed tokens with an estimated price when the
models.dev book has the rate, a composition bar replacing the donut (free
window is the track), and a footer with the run's duration at the left and
the bar's occupancy figure at the right.
Links are S-curves fanned out of the parent card's foot in the family hue
with joint plugs at both ends; hovering or focusing a card lights its whole
lineage (ancestors + subtree) while the rest of the graph dims. Sibling
order follows the parent's subagentCatalog projection (the harness header
popup's own spawn order) when cached, with the activity heuristic as the
degrade. Narrow panes fold the family into single-column bands instead of
crushing cards, and the stage measures its content box, so the phantom
horizontal scrollbar at exact-fit widths is gone.
The inspector gains the hovered node's composition readout; keyboard focus
drives the same inspector/lineage affordance as hover. Card surfaces step
one layer up with the l2 border (the inspector's own nesting recipe) so the
cards read clearly in both themes.
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