feat(chat): A2UI surface store per-component readiness (PR A) #792

Job	Run time
Cockpit — secret-gated integration	1m 36s
Cockpit — representative capability smoke	1m 44s
examples/chat — python smoke	1m 44s
Library — lint / test / build	1m 40s
Cockpit — build / test	1m 57s
Cockpit — e2e	4m 0s
Website — lint / build	1m 20s
Cockpit — build all examples	5m 22s
Website — e2e	3m 27s
Cockpit — deploy smoke dry-run	1m 29s
Deploy → Vercel	-1s
Production smoke	-1s
	24m 17s

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