Register a new Lightbox route (native only) with presentation:
'transparentModal', animation: 'none', orientation: 'all'. The
per-screen orientation option lets the lightbox rotate without taking
the underlying shell screen along for the ride.
openLightbox() still measures the thumbnail on the UI thread and sets
activeLightbox synchronously before dispatching navigate('Lightbox'),
so the screen mounts with state populated and the opening spring
animates from the first frame. usePreventRemove holds the pop until
the close spring finishes (onAnimationEnd), covering hardware back,
programmatic goBack, and the internal close/swipe-dismiss paths with
one callback surface.
The ImageViewRoot animation engine is unchanged other than accepting
onAnimationEnd and losing the now-redundant ScreenOrientation
unlock/lock reaction. Web keeps its existing shell-level overlay.
Claude
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