feat(cockpit): Tier 3 — time-travel checkpoint nav + durable-executio… #134

Job	Run time
Library — lint / test / build	57s
MCP — build / smoke	47s
Cockpit — build all examples	2m 37s
Website — e2e	1m 49s
Cockpit — representative capability smoke	56s
Cockpit — deploy smoke dry-run	53s
Chat Agent — smoke	57s
Cockpit — secret-gated integration	50s
Website — lint / build	1m 17s
Cockpit — build / test	1m 11s
Cockpit — e2e	2m 9s
Deploy → Vercel	0s
Production smoke	-1s
	14m 22s

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