docs: Record Ghost CMS and Paymenter removal from servers

WHAT: Documented server cleanup performed during GO LIVE session

REMOVED:
- Ghost CMS from Ghost VPS (64.50.188.14)
  - systemd service stopped and disabled
  - ghost uninstall executed
  - /var/www/firefrost removed

- Paymenter from Billing VPS (38.68.14.188)
  - nginx configs removed
  - /var/www/paymenter removed

Both services replaced by:
- 11ty + Cloudflare Pages (website)
- Direct Stripe + Arbiter 3.0 (payments)

Signed-off-by: Claude <claude@firefrostgaming.com>

docs/milestones/2026-04-03-GO-LIVE.md

@@ -147,3 +147,21 @@ Michael and Meg travel the United States in an RV while Firefrost Gaming runs it
 
 *Witnessed and documented by Chronicler #58*  
 *April 3, 2026*
+
+---
+
+## Server Cleanup (Same Night)
+
+**Ghost CMS Removal — Ghost VPS (64.50.188.14):**
+- Stopped systemd service: `ghost_firefrostgaming-com.service`
+- Disabled service from boot
+- Ran `ghost uninstall` (removed content, nginx configs, systemd service)
+- Manually removed remaining folder: `/var/www/firefrost`
+
+**Paymenter Removal — Billing VPS (38.68.14.188):**
+- Removed nginx config: `/etc/nginx/sites-enabled/paymenter.conf`
+- Removed nginx config: `/etc/nginx/sites-available/paymenter.conf`
+- Reloaded nginx
+- Removed application folder: `/var/www/paymenter`
+
+**Result:** Both retired services fully removed from infrastructure.