feat: add return classification for archive chart, CARD API integration, compliance charts, systemd services

systemd/cve-backend.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=CVE Dashboard Backend (Express API)
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/home/cve-dashboard/backend
+ExecStart=/usr/bin/node server.js
+Restart=on-failure
+RestartSec=5
+EnvironmentFile=/home/cve-dashboard/backend/.env
+StandardOutput=append:/home/cve-dashboard/backend/backend.log
+StandardError=append:/home/cve-dashboard/backend/backend.log
+
+[Install]
+WantedBy=multi-user.target