The summarized button semantics (label, expanded/collapsed state)
wrapped the entire card with excludeSemantics, so every expanded
child vanished from the a11y tree — a screen-reader user could expand
a run and hear nothing inside it. The exclusion now wraps only the
header (ticker when collapsed, header row when expanded); inner item
cards stay readable, and the redundant background-toggle tappable is
explicitly excluded so the header stays the single AT stop.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>