[codex] Align production smoke checks with chat demos

[blove]

What changed

Updates the production smoke suite to use the actual readiness signals for the primitive chat demos.

chat/messages, chat/input, and chat/debug render message-input primitives directly instead of a <chat> host element, so the previous smoke check produced false failures even though the pages were healthy.

chat/a2ui also returns an A2UI form surface rather than a visible markdown chat bubble, so its send/receive smoke test now waits for the rendered Contact Us form heading instead of .chat-md.

Why

The broader production smoke coverage already on main exposed three false negatives and one mismatched send/receive assertion. This patch keeps the smoke suite strict, but makes it route-aware where the UI contract differs.

Verification

• BASE_URL=https://cockpit.cacheplane.ai EXAMPLES_URL=https://examples.cacheplane.ai npx playwright test apps/cockpit/e2e/production-smoke.spec.ts --grep "chat/messages loads|chat/input loads|chat/debug loads" --reporter=list
• BASE_URL=https://cockpit.cacheplane.ai EXAMPLES_URL=https://examples.cacheplane.ai npx playwright test apps/cockpit/e2e/production-smoke.spec.ts --reporter=list
• OPENAI_API_KEY=... BASE_URL=https://cockpit.cacheplane.ai EXAMPLES_URL=https://examples.cacheplane.ai npx playwright test apps/cockpit/e2e/production-smoke.spec.ts --grep "chat/a2ui sends and receives a message" --reporter=list
• OPENAI_API_KEY=... BASE_URL=https://cockpit.cacheplane.ai EXAMPLES_URL=https://examples.cacheplane.ai npx playwright test apps/cockpit/e2e/production-smoke.spec.ts --grep "sends and receives a message" --reporter=list
• git diff --check

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Project	Deployment	Actions	Updated (UTC)
cacheplane	Building	Preview, Comment	Apr 13, 2026 2:52pm