The merged performance/usage preference hides elapsed-time controls by
default. The release-only mid-turn fork scenario still waited for
"Ran for", so its ARIA check timed out despite a completed child turn.
Wait for the visible, enabled branch action belonging to live turn 2.
That action requires the settled turn tail and directly exercises the
fork affordance this scenario owns. Preserve the existing exact-cut,
synthetic closer, resume-header, completed-turn, and streaming checks.
Keep the default preference rather than enabling unrelated timing UI.
Refresh only the obsolete elapsed-time button in the ARIA expected
output. Session JSONL inputs, historical generations, snapshot versions,
and production code remain unchanged. The former wait failed locally;
the four-case scenario passes in ordinary comparison mode after this fix.