feat(deployment): add automated swap space configuration

- Create `scripts/setup-swap.sh` to dynamically detect and allocate
  a 4GB swap file to prevent OOM errors on low-RAM servers.
- Integrate the swap check gracefully into the `run.sh` orchestrator flow.
- Update `README.md` to document new sudo/disk space prerequisites
  and the updated deployment steps.

run.sh

@@ -44,6 +44,15 @@ fi
 
 echo -e "${GREEN}[OK] Critical variables are valid.${NC}\n"
 
+echo -e "${GREEN}[OK] Critical variables are valid.${NC}\n"
+
+if [ -f "./scripts/setup-swap.sh" ]; then
+    bash ./scripts/setup-swap.sh
+else
+    echo -e "${YELLOW}[WARNING] ./scripts/setup-swap.sh not found. Skipping swap check.${NC}"
+fi
+echo ""
+
 read -p "Do you want to run the auto-tune script to optimize GitLab for this server's RAM/CPU? (y/n): " -n 1 -r
 echo
 if [[ $REPLY =~ ^[Yy]$ ]]; then