Update deployment documentation and scripts to deploy to vt.alfacom.it, remove Replit references, and simplify the deployment workflow to two commands: `./push-to-gitlab.sh` and `bash deploy/deploy.sh`, including automated database backups.
Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 42d8028a-fa71-4ec2-938c-e43eedf7df01
Replit-Commit-Checkpoint-Type: intermediate_checkpoint