// AUTOMATIC MOBILE ROUTER — only fires from index.html, never loops
if (!window.location.pathname.endsWith('app-page.html')) {
  const isMobile = /Android|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini|webOS/i.test(navigator.userAgent);
  if (isMobile) {
    window.location.href = "app-page.html";
  }
}