Our SwiftUI game's board screen is one vertical stack: header, board, two tile racks, action buttons, message bar. Built with the iOS 27 SDK it renders correctly upright on iPhone Duo's inner display, but the content needs ~948 pt in an 837 pt canvas, so the racks clip and the buttons fall off the bottom. The canvas is unusually wide and short (669 x 871) compared with any iPhone.
What is the recommended way to adapt a portrait phone layout to the inner display — is the expectation that apps restructure into a side-by-side arrangement at this size class, and is there guidance on what to key that off? Size class alone reports .regular width on both displays.