feat: validate telemetry install and dogfood runtime events (#370) #964

Job	Run time
examples/chat — python smoke	1m 22s
Cockpit — build all examples	5m 46s
Library — lint / test / build	3m 16s
examples/chat — aimock e2e	2m 28s
Cockpit — representative capability smoke	1m 23s
Cockpit — secret-gated integration	1m 3s
Website — lint / build	1m 25s
Cockpit — build / test	1m 37s
Cockpit — deploy smoke dry-run	1m 4s
Website — e2e	2m 16s
PostHog — dashboards-as-code drift check	1m 13s
Cockpit — e2e	3m 9s
Deploy → Vercel	0s
Production smoke	0s
	26m 2s

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