New SINGLE_VM_ENHANCED_PLAN.md covers:
- Coolify as self-hosted PaaS (15-min setup vs 6-7hr manual)
- Valkey (Redis fork) for sessions, cache, pub/sub, rate limits
- Uptime Kuma for status page + alerting
- Dozzle for live container logs
- SOPS + age for git-safe encrypted secrets
- Restic for volume backups
- BuildKit cache mounts for faster Docker builds
- Docker Compose profiles for selective startup
- Revised 4.5-hour implementation timeline
Also updates SINGLE_VM_DEPLOYMENT.md §3 prerequisite to reference
resolved Gitea registry migration and new enhanced plan.
