Follow-up on StateUI: every platform now has its own native host written in Swift (macOS, iOS, Android, Windows and Linux)

A while ago I posted StateUI here as an experiment: Swift for the UI, with .NET MAUI underneath providing the controls on each platform. It worked, but every change had to cross into C# as a binary patch, and an app's own native views had to go through another runtime. So I dropped MAUI to get better performance and simpler interop, and every platform now has its own native host written in Swift. The host reads typed patches directly, in the same process, and an app's own native views - an MTKVi...