fix(ui): match spellbook frame and tab alignment

src/AcDream.App/UI/RetailUiRuntime.cs

@@ -764,7 +764,10 @@ public sealed class RetailUiRuntime : IDisposable
             new RetailWindowFrame.Options
             {
                 WindowName = WindowNames.Spellbook,
-                Chrome = RetailWindowChrome.Imported,
+                // LayoutDesc 0x21000034 is the 300x600 content surface. Like the
+                // Attributes/Skills window, retail supplies the outer gold frame
+                // through the shared window chrome rather than this root element.
+                Chrome = RetailWindowChrome.NineSlice,
                 Left = 18f,
                 Top = 18f,
                 Visible = false,