Initial commit: infrastructure documentation

Includes:
- Hardware environment reference (Proxmox cluster, VMs, LXCs)
- Services inventory with current deployments
- Caddy & DNS configuration reference
- Runbooks for common deployment procedures

Recent additions:
- SearXNG deployment (utility CT 102, search.echo6.co)
- TOC conversion to Proxmox with cortex VM
- Syncthing sync between Contabo and cortex

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,15 @@
+# Credentials - NEVER commit
+credentials
+credentials.bak
+*.credentials
+
+# Backup files
+*.bak
+*.backup
+*~
+
+# Editor files
+.vscode/
+.idea/
+*.swp
+*.swo