feat: Make all windows float above other apps

Add FloatingWindow ViewModifier that sets NSWindow.level to .floating
on appear. Applied to all 5 utility windows (Settings, About, Duration
Picker, Time Picker, Schedules) so they stay visible when focus moves
to another app — important for a menu bar-only utility.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: GitButler <gitbutler@gitbutler.com>

Author: 3 people

Sources/Insomnia/FloatingWindowModifier.swift

@@ -0,0 +1,43 @@
+// FloatingWindowModifier.swift — Insomnia GUI
+//
+// A SwiftUI ViewModifier that makes a window float above all other windows.
+// Used for LSUIElement menu bar apps where windows should stay visible
+// even when the user clicks on other applications.
+
+import SwiftUI
+
+/// Makes the hosting NSWindow float above all other windows.
+///
+/// Finds the NSWindow backing the SwiftUI view on appear and sets its
+/// level to `.floating`. This keeps Insomnia's windows visible even when
+/// focus moves to another app — important for a menu bar utility.
+struct FloatingWindow: ViewModifier {
+    /// Applies the floating window level to the view's hosting window.
+    func body(content: Content) -> some View {
+        content
+            .onAppear {
+                // Find the NSWindow hosting this SwiftUI view and float it
+                setFloatingLevel()
+            }
+    }
+
+    /// Searches the app's windows for the one hosting this view and sets it to float.
+    private func setFloatingLevel() {
+        // Slight delay to ensure the window is created and visible
+        DispatchQueue.main.asyncAfter(deadline: .now() + 0.05) {
+            // Set all non-main windows to floating level
+            // (MenuBarExtra doesn't create a standard NSWindow)
+            for window in NSApp.windows where window.isVisible {
+                window.level = .floating
+            }
+        }
+    }
+}
+
+/// Convenience extension for applying the floating window modifier.
+extension View {
+    /// Makes the hosting window float above all other windows.
+    func floatingWindow() -> some View {
+        modifier(FloatingWindow())
+    }
+}

Sources/Insomnia/InsomniaApp.swift

@@ -44,20 +44,23 @@ struct InsomniaApp: App {
         Window("Settings", id: "settings") {
             if let viewModel {
                 SettingsView(viewModel: SettingsViewModel(configuration: viewModel.configuration))
+                    .floatingWindow()
             }
         }
         .windowResizability(.contentSize)
 
         // About dialog window — uses BuildEnvironment for variant-aware title
         Window("About \(BuildEnvironment.appName)", id: "about") {
             AboutView()
+                .floatingWindow()
         }
         .windowResizability(.contentSize)
 
         // Custom duration picker window
         Window("Custom Duration", id: "duration-picker") {
             if let viewModel {
                 DurationPickerView(viewModel: viewModel)
+                    .floatingWindow()
             }
         }
         .windowResizability(.contentSize)
@@ -66,6 +69,7 @@ struct InsomniaApp: App {
         Window("Caffeinate Until", id: "time-picker") {
             if let viewModel {
                 TimePickerView(viewModel: viewModel)
+                    .floatingWindow()
             }
         }
         .windowResizability(.contentSize)
@@ -74,6 +78,7 @@ struct InsomniaApp: App {
         Window("Schedules", id: "schedules") {
             if let viewModel {
                 ScheduleEditorView(viewModel: viewModel)
+                    .floatingWindow()
             }
         }
         .windowResizability(.contentSize)