VPS Management API
    
    Usage:
    - Check VM status: /?vmId=NAME&do=check
    - Start VM: /?vmId=NAME&do=start
    - Stop VM: /?vmId=NAME&do=stop
    - Restart VM: /?vmId=NAME&do=restart
    
    Modern API endpoints:
    - /api/vm/check?vmId=NAME
    - /api/vm/start?vmId=NAME
    - /api/vm/stop?vmId=NAME
    - /api/vm/restart?vmId=NAME
    
    Add &r=1 to include raw response data (admin only)