Add initial infrastructure and backup scripts for Gitea and homelab deployment

- Create README.md with project layout and quick start instructions
- Implement backup scripts for Gitea, including database and repository exports
- Add systemd service and timer for automated Gitea backups
- Develop bootstrap scripts for homelab and VPS setup
- Document architecture and restore procedures
- Configure Caddy reverse proxy and Docker Compose for service management
- Establish secrets management guidelines

backups/scripts/restore-gitea.md

@@ -0,0 +1,14 @@
+# Gitea Restore (Postgres)
+
+1. Stop gitea stack:
+   - `cd /srv/ops/stacks/gitea && docker compose down`
+2. Restore filesystem data to:
+   - `/srv/data/gitea`
+   - `/srv/data/gitea-postgres` (or restore logical SQL below)
+3. Start only database:
+   - `cd /srv/ops/stacks/gitea && docker compose up -d gitea-db`
+4. Import SQL dump (if using logical dump):
+   - `cat /srv/backups/gitea/pg/<dump>.sql | docker exec -i gitea-db psql -U gitea -d gitea`
+5. Start gitea:
+   - `docker compose up -d gitea`
+6. Validate web + SSH endpoints.