fix: remove unused showMenuBarIcon from AppSettings and conditionally apply theme backgrounds

Sources/Firelink/AppSettings.swift

@@ -76,10 +76,6 @@ final class AppSettings: ObservableObject {
     @Published var listRowDensity: ListRowDensity = .standard {
         didSet { save() }
     }
-    
-    @Published var showMenuBarIcon: Bool = true {
-        didSet { save() }
-    }
 
     @Published var perServerConnections: Int {
         didSet {
@@ -148,7 +144,6 @@ final class AppSettings: ObservableObject {
             appTheme = stored.appTheme ?? .system
             appFontSize = stored.appFontSize ?? .standard
             listRowDensity = stored.listRowDensity ?? .standard
-            showMenuBarIcon = stored.showMenuBarIcon ?? true
             perServerConnections = min(max(stored.perServerConnections, 1), 16)
             maxConcurrentDownloads = min(max(stored.maxConcurrentDownloads ?? 3, 1), 12)
             globalSpeedLimitKiBPerSecond = min(max(stored.globalSpeedLimitKiBPerSecond ?? 0, 0), 10_485_760)
@@ -160,7 +155,6 @@ final class AppSettings: ObservableObject {
             appTheme = .system
             appFontSize = .standard
             listRowDensity = .standard
-            showMenuBarIcon = true
             perServerConnections = 16
             maxConcurrentDownloads = 3
             globalSpeedLimitKiBPerSecond = 0
@@ -245,7 +239,6 @@ final class AppSettings: ObservableObject {
             appTheme: appTheme,
             appFontSize: appFontSize,
             listRowDensity: listRowDensity,
-            showMenuBarIcon: showMenuBarIcon,
             perServerConnections: perServerConnections,
             maxConcurrentDownloads: maxConcurrentDownloads,
             globalSpeedLimitKiBPerSecond: globalSpeedLimitKiBPerSecond,
@@ -308,7 +301,6 @@ private struct StoredSettings: Codable {
     var appTheme: AppTheme?
     var appFontSize: AppFontSize?
     var listRowDensity: ListRowDensity?
-    var showMenuBarIcon: Bool?
     var perServerConnections: Int
     var maxConcurrentDownloads: Int?
     var globalSpeedLimitKiBPerSecond: Int?

Sources/Firelink/ContentView.swift

@@ -13,12 +13,10 @@ struct ContentView: View {
         NavigationSplitView {
             SidebarView(selection: $sidebarSelection)
                 .navigationSplitViewColumnWidth(min: 190, ideal: 220, max: 260)
-                .scrollContentBackground(.hidden)
-                .background(settings.appTheme.theme.secondaryBackground ?? Color(NSColor.windowBackgroundColor))
+                .themeBackground(settings.appTheme.theme.secondaryBackground)
         } detail: {
             detailView
-                .scrollContentBackground(.hidden)
-                .background(settings.appTheme.theme.background ?? Color(NSColor.windowBackgroundColor))
+                .themeBackground(settings.appTheme.theme.background)
         }
     }
 

Sources/Firelink/SettingsView.swift

@@ -73,7 +73,7 @@ struct SettingsView: View {
             }
         }
         .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
-        .background(settings.appTheme.theme.background ?? Color(NSColor.windowBackgroundColor))
+        .themeBackground(settings.appTheme.theme.background)
     }
 
     private var settingsSidebar: some View {

Sources/Firelink/Theme.swift

@@ -118,3 +118,23 @@ struct AppThemeModifier: ViewModifier {
             }
     }
 }
+
+struct ThemeBackgroundModifier: ViewModifier {
+    let color: Color?
+
+    func body(content: Content) -> some View {
+        if let color {
+            content
+                .scrollContentBackground(.hidden)
+                .background(color)
+        } else {
+            content
+        }
+    }
+}
+
+extension View {
+    func themeBackground(_ color: Color?) -> some View {
+        modifier(ThemeBackgroundModifier(color: color))
+    }
+}