Add Eden Smash Ultimate VPS room deployment scripts.

Provides install/update systemd workflow for git-based deploys to Ubuntu VPS.

Co-authored-by: Cursor <[email protected]>

systemd/eden-room.service

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+# Reference unit file — install.sh writes /etc/systemd/system/eden-room.service
+# with paths adjusted to your clone location (default: /opt/eden-room).
+
+[Unit]
+Description=Eden Multiplayer Room
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+User=eden
+Group=eden
+WorkingDirectory=/opt/eden-room
+ExecStart=/opt/eden-room/scripts/start-room.sh
+Restart=on-failure
+RestartSec=10
+NoNewPrivileges=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/eden-room
+PrivateTmp=true
+
+[Install]
+WantedBy=multi-user.target