[Copilot]

The E2E job failed because the overflow audit reported off-screen tab items inside a horizontally scrollable strip as layout spills.

• Overflow audit
  • Track whether the nearest clipping ancestor allows horizontal scrolling.
  • Ignore boundary crossings inside auto and scroll containers; retain checks for other boundaries.

if (!scrollable && (r.left < left - 2 || r.right > right + 2)) {
  // report overflow
}