fix(studio): switch character skills tab on visible list

src/AcDream.App/UI/Layout/CharacterStatController.cs

@@ -399,7 +399,9 @@ public static class CharacterStatController
         // last duplicate) so we get the wider-label copies (195px) for the unselected state.
         BindFooterDynamic(layout, datFont, data, activeTab, attrSel, skillSel);
 
-        UiElement? statList = layout.FindElement(ListBoxId);
+        UiElement? statList =
+            FindInPageContaining(layout, NameId, static el => HasDatElementId(el, ListBoxId))
+            ?? layout.FindElement(ListBoxId);
         RebuildActiveList();
 
         if (layout.Root is { } tabRoot2 && spriteResolve is not null)
@@ -1228,6 +1230,31 @@ public static class CharacterStatController
         return null;
     }
 
+    /// <summary>Finds the first descendant matching <paramref name="predicate"/> inside the
+    /// root-level tab page that contains <paramref name="anchorId"/>. This is required for
+    /// duplicated tab-page ids such as the character list box (0x1000023D): <see cref="ImportedLayout"/>
+    /// stores only the last duplicate in its id dictionary, which may be in a hidden page.</summary>
+    private static UiElement? FindInPageContaining(
+        ImportedLayout layout,
+        uint anchorId,
+        Func<UiElement, bool> predicate)
+    {
+        if (layout.FindElement(anchorId) is not { } anchor || layout.Root is not { } root)
+            return null;
+
+        foreach (var page in root.Children)
+        {
+            if (page.Children.Count == 0) continue;
+            if (!ContainsWidget(page, anchor)) continue;
+            return FindInSubtree(page, predicate);
+        }
+
+        return null;
+    }
+
+    private static bool HasDatElementId(UiElement element, uint id)
+        => element is UiDatElement datElement && datElement.ElementId == id;
+
     private static bool ContainsWidget(UiElement node, UiElement target)
     {
         if (ReferenceEquals(node, target)) return true;