IosDocumentScanner

iOS document scanning.

Unlike the other headless services here, VisionKit's VNDocumentCameraViewController is inherently a UI flow: it must be presented modally from a live UIViewController and delivers its pages through a delegate, so it cannot be driven from a background service object with no presentation context (the Android side is the same — ML Kit's document scanner needs an Activity).

The correct home for a real implementation is the Compose UI layer (a ComposeUIViewController host can present the scanner and pump pages back), mirroring how camera capture and maps typically live in the UI layer rather than as background services. Until that UI hook exists in the consuming app, this returns no pages — a truthful no-op rather than fragile, untestable view-controller-presentation interop.