grim7/12/2026, 1:14:39 PM

Replace the collapsible-group UI with always-visible card stacks — a change
request's whole timeline is legible at a glance, no expand/collapse toggle.

- one stack = a rounded-xl overflow-hidden container whose inner cards are
  divided by a top border with no gaps: top card rounds up, bottom rounds down,
  middle square; gap is between stacks.
- top card is the header (repo · #num · title · actor · current verdict chip),
  linking to the current run else the PR.
- truncation: a stack with >=10 entries renders first + ~3 middle + last, the
  middle behind a progressive blur (stacked masked backdrop-blur layers) with a
  "show all N" that expands the full timeline inline (no nav, no modal).
- unchanged: live SSE merge, verdict + filter chips, tripwire-comment dedup +
  label, dimmed exempt/no-run entries, every entry clickable. SQL grouping and
  active-repo scope untouched.

Checks: typecheck, biome, boundaries, 204 tests.

Parentf805fc0