Add product variants API, deployment scripts, and documentation

- Add Node.js variant-api server with PostgreSQL integration
- Add new utility scripts for system verification and website status
- Update CI/CD workflow configuration
- Add color variant solution documentation
- Add product variants JavaScript support
- Update gitignore for new build artifacts

website-status.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+# Quick Website Status Check Script
+
+echo "================================"
+echo "SkyArtShop Status Check"
+echo "================================"
+echo ""
+echo "Service: $(systemctl is-active skyartshop)"
+echo "PostgreSQL: $(systemctl is-active postgresql)"
+echo "Nginx: $(systemctl is-active nginx)"
+echo ""
+echo "Website Tests:"
+curl -s -o /dev/null -w "  Homepage: %{http_code}\n" http://localhost:5000
+curl -s -o /dev/null -w "  CSS Loading: %{http_code}\n" http://localhost:5000/assets/css/main.css
+curl -s -o /dev/null -w "  External HTTPS: %{http_code}\n" https://skyarts.ddns.net 2>/dev/null
+echo ""
+echo "Database Connections:"
+PGPASSWORD='SkyArt2025Pass!' psql -h localhost -U skyartapp -d skyartshop -t -c "SELECT COUNT(*) || ' active connection(s)' FROM pg_stat_activity WHERE datname='skyartshop' AND usename='skyartapp';"
+echo ""
+echo "Ports Listening:"
+ss -tulnp 2>/dev/null | grep -E ":80|:443|:5000|:5432" | awk '{print "  " $1, $5}' | sort -u
+echo ""
+echo "Recent Errors:"
+journalctl -u skyartshop -n 50 --no-pager | grep -iE "error|exception|fail" | wc -l | xargs -I {} echo "  {} error(s) in last 50 log entries"
+echo ""