fix(ui): select and examine favorite spells like retail

tests/AcDream.App.Tests/Spells/SpellComponentRequirementServiceTests.cs

@@ -165,6 +165,39 @@ public sealed class SpellComponentRequirementServiceTests
         Assert.False(service.HasRequiredComponents(50u));
     }
 
+    [Fact]
+    public void ExaminationFormulaPreservesOrderAndReportsNestedOwnership()
+    {
+        var objects = new ClientObjectTable();
+        objects.AddOrUpdate(new ClientObject { ObjectId = 1u, Name = "Player" });
+        objects.AddOrUpdate(new ClientObject
+        {
+            ObjectId = 2u,
+            ContainerId = 1u,
+            Type = ItemType.Container,
+        });
+        objects.AddOrUpdate(new ClientObject
+        {
+            ObjectId = 3u,
+            WeenieClassId = 101u,
+            ContainerId = 2u,
+        });
+        var service = Service(
+            objects,
+            [10u, 11u, 10u],
+            new Dictionary<uint, uint>
+            {
+                [10u] = 101u,
+                [11u] = 102u,
+            });
+
+        Assert.Equal(
+            new uint[] { 10u, 11u, 10u },
+            service.GetAppropriateFormula(50u));
+        Assert.True(service.IsComponentOwned(10u));
+        Assert.False(service.IsComponentOwned(11u));
+    }
+
     private static SpellComponentRequirementService Service(
         ClientObjectTable objects,
         IReadOnlyList<uint> components,