feat: cockpit dark mode token system (#298) #801

Job	Run time
Website — lint / build	2m 16s
Cockpit — secret-gated integration	1m 33s
Cockpit — build all examples	5m 17s
Website — e2e	4m 7s
Cockpit — representative capability smoke	1m 40s
Library — lint / test / build	3m 17s
examples/chat — python smoke	1m 47s
Cockpit — build / test	1m 56s
Cockpit — deploy smoke dry-run	1m 35s
Cockpit — e2e	2m 45s
Deploy → Vercel	15m 18s
Production smoke	9m 52s
	51m 23s

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