feat: cockpit dark mode token system #799

Job	Run time
Cockpit — e2e	3m 3s
Cockpit — build / test	1m 29s
Library — lint / test / build	3m 5s
Website — e2e	5m 26s
Cockpit — build all examples	5m 11s
Website — lint / build	1m 35s
Cockpit — secret-gated integration	1m 8s
Cockpit — deploy smoke dry-run	1m 12s
Cockpit — representative capability smoke	1m 18s
examples/chat — python smoke	1m 19s
Deploy → Vercel	0s
Production smoke	0s
	24m 46s

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