Restructure solution layout by module

src/Cartographer/StellaOps.Cartographer/Options/CartographerAuthorityOptionsConfigurator.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using StellaOps.Auth.Abstractions;
+
+namespace StellaOps.Cartographer.Options;
+
+/// <summary>
+/// Applies Cartographer-specific defaults to <see cref="CartographerAuthorityOptions"/>.
+/// </summary>
+internal static class CartographerAuthorityOptionsConfigurator
+{
+    /// <summary>
+    /// Ensures required scopes are present and duplicates are removed case-insensitively.
+    /// </summary>
+    /// <param name="options">Target options.</param>
+    public static void ApplyDefaults(CartographerAuthorityOptions options)
+    {
+        ArgumentNullException.ThrowIfNull(options);
+
+        EnsureScope(options.RequiredScopes, StellaOpsScopes.GraphRead);
+        EnsureScope(options.RequiredScopes, StellaOpsScopes.GraphWrite);
+    }
+
+    private static void EnsureScope(ICollection<string> scopes, string scope)
+    {
+        ArgumentNullException.ThrowIfNull(scopes);
+        ArgumentException.ThrowIfNullOrEmpty(scope);
+
+        if (scopes.Any(existing => string.Equals(existing, scope, StringComparison.OrdinalIgnoreCase)))
+        {
+            return;
+        }
+
+        scopes.Add(scope);
+    }
+}