docs(website): refresh llms.txt for post-publish reality #443

Job	Run time
Cockpit — deploy smoke dry-run	1m 13s
Cockpit — representative capability smoke	1m 1s
Website — lint / build	1m 43s
Library — lint / test / build	1m 32s
Website — e2e	2m 7s
Cockpit — secret-gated integration	1m 7s
Cockpit — e2e	1m 53s
Chat Agent — smoke	1m 14s
Cockpit — build all examples	4m 57s
Cockpit — build / test	1m 24s
Deploy → Vercel	0s
Production smoke	0s
	18m 11s

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