[Unit]
Description=X11 VNC Server (On-Demand)
After=network.target xvfb.service
Requires=xvfb.service
Documentation=http://www.karlrunge.com/x11vnc/

[Service]
Type=simple
User=intense
Environment="DISPLAY=:99"

# Start x11vnc connected to Xvfb display :99
# -forever: keep running
# -nopw: no password required (can change)
# -localhost: only local connections (can change to 0.0.0.0 for remote)
ExecStart=/usr/bin/x11vnc -display :99 -forever -nopw -localhost -listen localhost

# Wait for display to be ready
ExecStartPost=/bin/bash -c 'sleep 2 && echo "✓ VNC ready on :5900"'

# Restart on failure
Restart=on-failure
RestartSec=5

# Resource limits
MemoryMax=256M
CPUQuota=30%

# Logging
StandardOutput=journal
StandardError=journal
SyslogIdentifier=x11vnc

[Install]
WantedBy=multi-user.target