feat(marketing/channels): X adapter (OAuth 2.0, threads, media) + sha… #1107

Job	Run time
CI scope	6s
Cockpit — build / test	1m 59s
Cockpit — representative capability smoke	1m 47s
Library — lint / test / build	4m 1s
Cockpit — build all examples	5m 49s
Cockpit — secret-gated integration	3s
examples/chat — python smoke	1m 49s
PostHog — dashboards-as-code drift check	1m 47s
Cockpit — e2e	3m 47s
examples/chat — e2e	3m 0s
Website — e2e	3m 7s
Cockpit — deploy smoke dry-run	1m 45s
Website — lint / build	2m 11s
Canonical demo → Vercel	2m 38s
Deploy → Vercel	5s
Production smoke	4m 18s
	38m 12s

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