Fix answer search URL chat loading

[BigSimmo]

Summary

• Ensure answer-mode run=1 searches submit the URL query into the chat flow instead of rendering the answer home copy.
• Add Playwright regression coverage for direct answer search URLs while the answer request is still in flight.
• Merged latest origin/main, accepted the Bugbot Autofix guard for non-runnable answer searches, and formatted the final PR head.

Walkthrough

answer_search_url_recheck_merge_ready.mp4

Answer search URL recheck loading state

Verification

• npm run format:check
• npm run test:e2e:chromium -- tests/ui-smoke.spec.ts -g "answer search URL opens chat without the answer home copy"
• npm run verify:cheap
• npm run verify:ui when UI, routing, styling, browser behavior, reduced-motion, or forced-colors behavior changed
• npm run check:production-readiness:ci
• GitHub CI verify
• GitHub CI ui-smoke
• GitHub Secret Scan / Gitleaks
• npm run verify:release before release or handoff confidence claims — not run; release gate is broader than this focused UI/routing fix.
• npm run eval:retrieval:quality — not applicable; no retrieval/ranking/scoring behavior changed.
• npm run eval:rag -- --limit 15 + npm run eval:quality -- --rag-only — not applicable; no answer generation or synthesis prompt changes.
• npm run check:edge:functions locally — command exits cleanly but skips because Deno v2 is not installed in this VM; GitHub CI installs Deno and passed verify.

Clinical Governance Preflight

Not applicable; this change is limited to answer-mode URL submission and loading/home-state rendering.

Notes

• Manual walkthrough confirms the answer home copy is absent and the submitted URL shows an active loading/chat state.
• The PR is git-mergeable and checks are green; GitHub still reports mergeStateStatus: BLOCKED, likely due to repository merge policy/review requirements.

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[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

Bugbot Autofix prepared a fix for the issue found in the latest run.

• ✅ Fixed: Indefinite answer loading skeleton
  • Gated submittedAnswerSearchActive on canRunSearch so answer-mode URLs that cannot auto-run show the answer home instead of a perpetual loading skeleton.

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^{Reviewed by Cursor Bugbot for commit 7828552. Configure here.}