Why: at 390px the compact layout swaps the sidebar for an icon rail; the
cockpit entry remains reachable as an icon button but not as .tsb-tool,
so scenario 7 timed out waiting for the sidebar form.
Evidence: tsc clean, vitest green, build green (SELF); seven-scenario
rerun to be recorded on the Dev I4 card.
Impact: e2e spec only.
Refs: rollout I4