fix: hide dock icon when main window closes

Sources/OpenLessApp/Settings/SettingsView.swift

@@ -51,10 +51,8 @@ struct SettingsView: View {
     }
 
     var body: some View {
-        HStack(spacing: 0) {
+        HStack(spacing: 18) {
             FixedSidebar(selection: $navigation.selection)
-                .padding(.leading, 18)
-                .padding(.vertical, 18)
             Group {
                 switch navigation.selection {
                 case .home: HomeTab()
@@ -65,6 +63,7 @@ struct SettingsView: View {
             }
             .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
         }
+        .padding(18)
         .background(WindowCanvasBackground())
         .frame(minWidth: 1040, minHeight: 700)
     }
@@ -138,6 +137,7 @@ private struct FixedSidebar: View {
         .padding(.top, 0)
         .padding(.bottom, 12)
         .frame(width: 264)
+        .frame(maxHeight: .infinity, alignment: .top)
         .glassPanel(cornerRadius: 32)
         .onAppear { refresh() }
         .onReceive(NotificationCenter.default.publisher(for: .openLessHistoryChanged)) { _ in refresh() }

Sources/OpenLessApp/Settings/SettingsWindowController.swift

@@ -2,15 +2,17 @@ import AppKit
 import SwiftUI
 
 @MainActor
-final class SettingsWindowController {
+final class SettingsWindowController: NSObject, NSWindowDelegate {
     private var window: NSWindow?
     private let navigation = SettingsNavigationModel()
 
     func show(tab: OpenLessMainTab = .home) {
+        NSApp.setActivationPolicy(.regular)
         navigation.selection = tab
         if let window = window {
             window.makeKeyAndOrderFront(nil)
             NSApp.activate(ignoringOtherApps: true)
+            alignTrafficLights(in: window)
             return
         }
         let hosting = NSHostingController(rootView: SettingsView(navigation: navigation))
@@ -26,6 +28,7 @@ final class SettingsWindowController {
         win.tabbingMode = .disallowed
         win.center()
         win.isReleasedWhenClosed = false
+        win.delegate = self
         self.window = win
         win.makeKeyAndOrderFront(nil)
         NSApp.activate(ignoringOtherApps: true)
@@ -35,6 +38,20 @@ final class SettingsWindowController {
         }
     }
 
+    func windowWillClose(_ notification: Notification) {
+        NSApp.setActivationPolicy(.accessory)
+    }
+
+    func windowDidResize(_ notification: Notification) {
+        guard let window = notification.object as? NSWindow else { return }
+        alignTrafficLights(in: window)
+    }
+
+    func windowDidBecomeKey(_ notification: Notification) {
+        guard let window = notification.object as? NSWindow else { return }
+        alignTrafficLights(in: window)
+    }
+
     private func alignTrafficLights(in window: NSWindow) {
         let buttons: [NSButton?] = [
             window.standardWindowButton(.closeButton),