Native mobile app foundation

Groundwork for a native mobile shell on iOS and Android: a shared bridge that lets generated apps run inside a native WebView the same way they run in the web iframe, native push support alongside web push, bearer-token sign-in with a secure session store and automatic 401 handling, an Apps tab with workspace switcher and Browse directory, a notification inbox with deep-link routing, in-app reporting and age-gate flows, camera and consent handling, and universal-link verification files served from the web.