⭐️ New sample code: VisionImmersiveDockableUIKit
"This is a simplified example showing how to spawn a fully immersive scene using UIKit and UIHostingSceneDelegate in visionOS 26.
Additionally, it demonstrates using private API to dock the main window in the immersive scene, in a similar way to how video players work on visionOS."
https://github.com/steventroughtonsmith/VisionImmersiveDockableUIKit