Refactor navigation to support new iOS 16/macOS 13 and deprecated iOS 14/macOS 11 APIs #224
Description
SwiftUI is deprecating NavigationView in favour of the new NavigationStack API. It's probably a good time to refactor the app's navigation to a) clean up some of the hacks we had to employ to workaround some SwiftUI shortcomings, and b) add switching logic between the old APIs and the new.
Migration guidance is available here.