Live end-to-end probe of each public transport endpoint. Hits them on localhost so we measure server-side latency without nginx + TLS noise. Used by /artber/health sub-tabs to show a green/red dot per transport.

Request

• Base URL: https://check.live-direct-marketing.online (the document declares no server; this is the origin it was published from)
• URL: https://check.live-direct-marketing.online/api/admin/transport-health
• Auth: API key in header X-Admin-Key