iphone_duo_ui_pro 0.2.1

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Fixes found on the iPhone Duo and iPhone 18 Pro simulators.

• DuoAdaptiveScaffold, horizontal layout: one bar at the bottom, never two. With a tab bar the bottom actions move to the overflow menu of the app bar; without tabs they keep a single toolbar row. The app bar keeps up to maxInlineActions (3) top actions, by priority, and overflows the rest.
• DuoAdaptiveScaffold: the body is no longer clipped at the bottom safe-area inset. It runs to the edge and leaves the inset in MediaQuery, so scroll views pad their own content, as on iOS. The horizontal layout also keeps the body clear of the side insets (the Dynamic Island in landscape).
• FoldAlignedGrid adds the safe area to its scroll padding — an explicit padding had switched off the one GridView adds by itself, so the last row could end up under the home indicator.
• The status bar axis is exact: 143.5 px at 3x (47.83 pt), identical on both displays.
• Example: launch options (tab, scroll_end) read from tmp/duo_launch.txt in the app container, for screenshots without touching the simulator.

Verified on the iPhone Duo simulator (iOS 27.1, Xcode 27.1).

• The native bridge compiles against the iOS 27.1 SDK with DUO_SDK_27_1 and no warnings; reserved regions, the hinge, size classes and the vertical bar edge were all observed at run time.
• DuoAdaptiveScaffold: the vertical bar now lives in the system column, the 84 pt safe-area inset the status bar occupies. It starts below the status/camera region (reported as an occlusion), ends above the home indicator, and its items share the status bar axis, 48 pt from the edge. Content is no longer inset twice and gains the width of the column.
• DuoEnvironment.copyWith.
• Breaking: the iOS deployment target is 15.0. Xcode 27.1 rejects anything lower.
• Example: UIScene life cycle, DUO_SDK_27_1 enabled in the Podfile, and a Bridge tab that shows and logs the live environment.
• Tests use the measured geometry: a 40 pt fold, the 84 pt system column, 34 pt home indicator.

• README: fixed a clipped caption in the two-pane diagram and pinned the diagrams to an immutable commit.

First release.

• DuoScope + native iOS bridge (DuoBridge): reserved regions, hinge, UIKit size classes and the vertical bar edge streamed into Dart.
• DuoDisplayFeatures: republishes the fold and the under-display camera as DisplayFeatures, which iOS does not provide to Flutter.
• DuoAdaptiveScaffold: navigation in the vertical bar, with the primary action promoted instead of a floating action button.
• FoldAwareTwoPane, FoldAlignedGrid, duoEvenColumns: layouts that keep content and controls off the fold.
• showDuoDialog, showDuoModalBottomSheet, duoAnchorPoint: presentations anchored beside the fold.