refactor(examples): Stage 2 PR-2 — langgraph wave (8 apps migrated) #896

Job	Run time
Cockpit — build / test	1m 33s
examples/chat — python smoke	1m 31s
Website — lint / build	1m 43s
Cockpit — build all examples	5m 15s
Library — lint / test / build	3m 34s
Cockpit — deploy smoke dry-run	1m 4s
Cockpit — secret-gated integration	1m 8s
Website — e2e	2m 8s
Cockpit — representative capability smoke	2m 14s
Cockpit — e2e	2m 18s
examples/chat — aimock e2e	2m 32s
PostHog — dashboards-as-code drift check	1m 14s
Deploy → Vercel	0s
Production smoke	0s
	26m 14s

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