Gives Supabase Edge Functions (and anything else outside the VPS) a real,
authenticated endpoint onto the VPS's already-working internal Postfix
relay (the same one Ghost uses in production), via the falah-ibaas
EmailConnector that was fully built but never actually deployed.
Deployed live at https://nfmailrelay.falahos.my as a Docker Swarm service
on the existing Traefik network, TLS via Let's Encrypt, shared-secret
bearer auth. Built for Nur Falah's heir notification emails.
