Self-review caught three defects in the plan. .omniBoxContainer, the
wrapper the dropdown positions against, does not declare position:
relative — without it the list anchors to the page. The postcode
suppression test typed character by character, so it would have asserted
no request while 'NW1' legitimately fires one; it now sets the value in
one go. And the Enter-submits-search assertion needed waitFor, because
updateURL pushes inside startTransition.
Task 1 is the one to review hardest: it is the only unflagged change and
it alters rate limiting for every endpoint.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mWQnpye9F299NVRCCSRvj
