The interior display refuses programmatic rotation
(UISceneErrorDomain 101: "The current windowing mode does not allow for
programmatic changes to interface orientation"), so the rotate/fullscreen
button did nothing there and the failure was swallowed.
- OrientationManager tracks `canRotateProgrammatically` (from the hinge
state, cleared when a geometry request is refused) and is @Observable.
- The fullscreen button takes the iPad path when rotation is unavailable:
details toggle in portrait, floating panel toggle in landscape, icon
follows the panel state; orientation lock is hidden. The refused request
itself falls back to the details toggle. Accelerometer-driven rotation
requests are gated the same way.
- Corner layout gate is size-only on iOS (≥900×600 including safe areas,
so the status bar toggling with the layout can't oscillate it); the
layout-mode setting is exposed on foldables via a hinge presence check.
- Corner layout on iPhone always hides the status bar (the interior's
landscape bar is a ~57pt column) and pads by the live top inset only,
instead of the transient 82pt inset seen while unfolding.
- The player hosting controller nudges its safe area after size
transitions so fold/unfold doesn't leave SwiftUI with stale insets.