Extract shared header and skill group block components

RpgRoller/Components/Pages/Workspace.razor.cs

@@ -1,6 +1,7 @@
 using System.Diagnostics.CodeAnalysis;
 using Microsoft.AspNetCore.Components;
 using Microsoft.JSInterop;
+using RpgRoller.Components.Pages.HomeControls;
 using RpgRoller.Contracts;
 using RpgRoller.Domain;
 
@@ -846,7 +847,22 @@ public partial class Workspace : IAsyncDisposable
 
     private bool IsPlayScreen => string.Equals(CurrentScreen, "play", StringComparison.OrdinalIgnoreCase);
     private bool IsManagementScreen => !IsPlayScreen;
-    private string CurrentScreenLabel => IsPlayScreen ? "Play" : "Campaign Management";
+    private IReadOnlyList<AppHeaderMenuItem> HeaderMenuItems
+    {
+        get
+        {
+            var items = new List<AppHeaderMenuItem>
+            {
+                new() { Label = "Play", IsActive = IsPlayScreen, OnSelected = SwitchToPlayAsync },
+                new() { Label = "Campaign Management", IsActive = IsManagementScreen, OnSelected = SwitchToManagementAsync }
+            };
+
+            if (IsCurrentUserAdmin)
+                items.Add(new AppHeaderMenuItem { Label = "Admin", IsActive = false, OnSelected = OpenAdminAsync });
+
+            return items;
+        }
+    }
 
     private string ConnectionStateLabel => ConnectionState switch
     {