feat: add persistent RustDesk client service for VPS

- Add rustdesk-vps.service (systemd unit with Xvfb + DBus)
- Add rustdesk-vps-start.sh (Xvfb startup + DBus session for RustDesk)
- Update xorg-dummy.service without -nolisten local (fixes socket access)
- Update rustdesk-dummy.service with /usr/share/ binary path
- Add docker-compose.vps.yml with hbbs/hbbr RustDesk server
- RustDesk client connects to public relay rs-ny.rustdesk.com:21116
- ID: 458564614 (confirmed via --get-id)
- Password: retrowest

config/vps/rustdesk-vps-start.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+# RustDesk VPS Headless Client Startup Script
+# Starts Xvfb :99, waits for display, then launches RustDesk client via DBus
+
+set -e
+
+# Kill old Xvfb
+pkill -9 Xvfb 2>/dev/null || true
+sleep 1
+
+# Start Xvfb
+/usr/bin/Xvfb :99 -screen 0 1920x1080x24 -ac -nolisten tcp -nolisten unix &
+XVFB_PID=$!
+sleep 2
+
+# Wait for display to be ready
+for i in $(seq 1 30); do
+    if xdpyinfo -display :99 > /dev/null 2>&1; then
+        break
+    fi
+    sleep 1
+done
+
+# Verify display is up
+if ! xdpyinfo -display :99 > /dev/null 2>&1; then
+    echo "ERROR: Xvfb failed to start on :99"
+    kill $XVFB_PID 2>/dev/null || true
+    exit 1
+fi
+
+export DISPLAY=:99
+
+# Start RustDesk client inside DBus session (required for headless GUI apps)
+exec /usr/bin/dbus-run-session -- /usr/share/rustdesk/rustdesk --server

config/vps/rustdesk-vps.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=RustDesk VPS Client
+After=network.target
+
+[Service]
+Type=simple
+User=root
+Environment="DISPLAY=:99"
+ExecStartPre=-/usr/bin/pkill -9 Xvfb
+ExecStart=/usr/local/bin/rustdesk-vps-start.sh
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target