import AppKitimport SwiftUI enum PreferencesTab: String, Hashable {    case general    case advanced    case about    case debug     static let windowWidth: CGFloat = 424    static let windowHeight: CGFloat = 410     var preferredHeight: CGFloat { PreferencesTab.windowHeight }} @MainActorstruct PreferencesView: View {    @ObservedObject var settings: SettingsStore    @ObservedObject var store: UsageStore    let updater: UpdaterProviding    @ObservedObject var selection: PreferencesSelection    @State private var contentHeight: CGFloat = PreferencesTab.general.preferredHeight     var body: some View {        TabView(selection: self.$selection.tab) {            GeneralPane(settings: self.settings, store: self.store)                .tabItem { Label("General", systemImage: "gearshape") }                .tag(PreferencesTab.general)             AdvancedPane(settings: self.settings, store: self.store)                .tabItem { Label("Advanced", systemImage: "slider.horizontal.3") }                .tag(PreferencesTab.advanced)             AboutPane(updater: self.updater)                .tabItem { Label("About", systemImage: "info.circle") }                .tag(PreferencesTab.about)             if self.settings.debugMenuEnabled {                DebugPane(settings: self.settings, store: self.store)                    .tabItem { Label("Debug", systemImage: "ladybug") }                    .tag(PreferencesTab.debug)            }        }        .padding(.horizontal, 24)        .padding(.vertical, 16)        .frame(width: PreferencesTab.windowWidth, height: self.contentHeight)        .onAppear {            self.updateHeight(for: self.selection.tab, animate: false)            self.ensureValidTabSelection()        }        .onChange(of: self.selection.tab) { _, newValue in            self.updateHeight(for: newValue, animate: true)        }        .onChange(of: self.settings.debugMenuEnabled) { _, _ in            self.ensureValidTabSelection()        }    }     private func updateHeight(for tab: PreferencesTab, animate: Bool) {        let change = { self.contentHeight = tab.preferredHeight }        if animate {            withAnimation(.spring(response: 0.32, dampingFraction: 0.85)) { change() }        } else {            change()        }    }     private func ensureValidTabSelection() {        if !self.settings.debugMenuEnabled, self.selection.tab == .debug {            self.selection.tab = .general            self.updateHeight(for: .general, animate: true)        }    }}