The collapsed activity / agent-run cards (ClideHolderCard) wrapped themselves
in 3px vertical margin, while the prose ConversationCards use 14px bottom /
0 top. So a folded card floated ~17px below the previous card but hugged the
next one at 3px — the uneven gap the earlier bordered-padding tweak didn't
address. Give the holder the same bottom-14 / top-0 margin.
The holder-card golden is regenerated for the taller frame. The copy-button
holder test parks its hover and advances past the tooltip show-delay so the
(exit-uncancellable) Future.delayed timer fires instead of leaking.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Extracts a shared ClideHolderCard primitive (consumed next by T-264) that
renders a folded run as one framed container wrapping its sub-cards:
- The whole holder background is the collapse toggle — a gesture target
behind the children that only fires for hits the children don't consume.
Each sub-card opaquely absorbs its own bounds, so a card tap (and its
copy button) interacts with the card, never the holder; selection drags
pass through. This ends the scroll race: while a run tail-follows, a
click on whatever background is in view collapses it, no top header to
reach.
- A focusable caret keeps the control keyboard/AT reachable (D-78); the
collapsed ticker + step count are preserved.
- _ActivityCard becomes a thin stateless adopter of the primitive.
Tests: ticker/expand, background-toggle, child-tap-not-hijacked, copy
still works, keyboard Activate path; golden for collapsed + expanded.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>