WHAT: Created comprehensive DNS records documentation
CLEANUP: Removed 3 obsolete records from Cloudflare:
- billing.firefrostgaming.com (Paymenter decommissioned)
- whitelist.firefrostgaming.com (service decommissioned)
- ipv4.firefrostgaming.com (old Breezehost Plesk server)
Documents all active web services, Wings nodes, email infrastructure,
and in-progress services (n8n, codex).
Signed-off-by: claude@firefrostgaming.com
