Check out SwiftUI app lifecycle #7
Description
Check if it's possible to skip AppKit, NSWindow and use the SwiftUI app lifecycle. MenuBarExtra might help with that, together with Clipboard and Settings windows in one WindowGroup. Limiting AppKit's extent is the goal here.
What's tricky is the navigation, now clipboard window disappears when the app goes to the background. That way it doesn't feel like an actual app but just a quick tool. It leverages some features from NSWindow, for instance hidesOnDeactivate.