/* =============================================================================
   RETIRED — the portrait "rotate to landscape" overlay was removed.

   It offered a second, non-playable mobile mode (a nag the user could only
   dismiss, with no way into the chart) on top of the real immersive landscape
   experience. The single mobile prediction flowpath is now:

     - the immersive landscape CSS in assets/mobile.css
       (@media (orientation: landscape) and (pointer: coarse), scoped to
       html.route-prediction.mobile-device), which applies as soon as the phone
       is in landscape; and
     - a best-effort fullscreen + landscape lock requested from the wizard's
       Start-button gesture (clientside callback in app.py).

   This file is intentionally left empty (minus this note) so the asset path
   keeps resolving without 404s and the history stays legible.
   ========================================================================== */