fix(ui): retain character sublayout reflow

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

@@ -447,16 +447,20 @@ public static class CharacterStatController
                 ? FindInSubtree(contentPage, static el => HasDatElementId(el, ListBoxId))
                 : null)
             ?? layout.FindElement(ListBoxId);
-        if (statList is not null)
+        // Imported character nodes already carry the exact raw-edge policy from
+        // the 337px base sublayout into the 575px mounted page. Only synthetic/
+        // legacy widgets need compatibility anchors; assigning Anchors on an
+        // imported node deliberately clears its UiLayoutPolicy.
+        if (statList is not null && statList.LayoutPolicy is null)
             statList.Anchors = AnchorEdges.Left | AnchorEdges.Top | AnchorEdges.Bottom;
 
         if (layout.Root is { } stretchRoot)
         {
-            SetAnchorsAllById(stretchRoot, ListScrollbarId, AnchorEdges.Left | AnchorEdges.Top | AnchorEdges.Bottom);
+            SetCompatibilityAnchorsAllById(stretchRoot, ListScrollbarId, AnchorEdges.Left | AnchorEdges.Top | AnchorEdges.Bottom);
-            SetAnchorsAllById(stretchRoot, ListDividerId, AnchorEdges.Left | AnchorEdges.Bottom);
+            SetCompatibilityAnchorsAllById(stretchRoot, ListDividerId, AnchorEdges.Left | AnchorEdges.Bottom);
-            SetAnchorsAllById(stretchRoot, FooterStateAId, AnchorEdges.Left | AnchorEdges.Bottom);
+            SetCompatibilityAnchorsAllById(stretchRoot, FooterStateAId, AnchorEdges.Left | AnchorEdges.Bottom);
-            SetAnchorsAllById(stretchRoot, FooterStateBId, AnchorEdges.Left | AnchorEdges.Bottom);
+            SetCompatibilityAnchorsAllById(stretchRoot, FooterStateBId, AnchorEdges.Left | AnchorEdges.Bottom);
-            SetAnchorsAllById(stretchRoot, FooterStateCId, AnchorEdges.Left | AnchorEdges.Bottom);
+            SetCompatibilityAnchorsAllById(stretchRoot, FooterStateCId, AnchorEdges.Left | AnchorEdges.Bottom);
         }
 
         UiScrollbar? skillScrollbar = PrepareSkillScrollbar(layout, contentPage, statList, spriteResolve);
@@ -1637,12 +1641,19 @@ public static class CharacterStatController
 
     // ── Helpers ──────────────────────────────────────────────────────────────
 
-    private static void SetAnchorsAllById(UiElement node, uint targetId, AnchorEdges anchors)
+    private static void SetCompatibilityAnchorsAllById(
+        UiElement node,
+        uint targetId,
+        AnchorEdges anchors)
     {
-        if (node is UiDatElement d && d.ElementId == targetId)
+        if (node is UiDatElement d
+            && d.ElementId == targetId
+            && node.LayoutPolicy is null)
+        {
             node.Anchors = anchors;
+        }
         foreach (var child in node.Children)
-            SetAnchorsAllById(child, targetId, anchors);
+            SetCompatibilityAnchorsAllById(child, targetId, anchors);
     }
 
     /// <summary>Depth-first search of <paramref name="node"/> and its descendants.

tests/AcDream.App.Tests/UI/Layout/CharacterStatControllerTests.cs

@@ -1471,6 +1471,41 @@ public class CharacterStatControllerTests
         Assert.NotNull(meter.Fill());
     }
 
+    [Fact]
+    public void ProductionFixture_MountedPagesUseRetailListFooterAndScrollbarReflow()
+    {
+        var layout = FixtureLoader.LoadCharacter();
+        CharacterStatController.Bind(
+            layout,
+            SampleData.SampleCharacter,
+            spriteResolve: id => (id, 16, 16));
+
+        ApplyLayoutPass(layout.Root);
+
+        var page = layout.Root.Children.Single(
+            e => e.DatElementId == CharacterStatController.AttributesPageId);
+        var list = Descendants(page).Single(
+            e => e.DatElementId == CharacterStatController.ListBoxId);
+        var statLayout = list.Parent!;
+        var scrollbar = statLayout.Children.OfType<UiScrollbar>().Single(
+            e => e.DatElementId == CharacterStatController.ListScrollbarId);
+        var divider = statLayout.Children.Single(
+            e => e.DatElementId == CharacterStatController.ListDividerId);
+        var footers = statLayout.Children.Where(
+            e => e.DatElementId is CharacterStatController.FooterStateAId
+                or CharacterStatController.FooterStateBId
+                or CharacterStatController.FooterStateCId).ToList();
+
+        Assert.Equal((112f, 398f), (list.Top, list.Height));
+        Assert.Equal((112f, 398f), (scrollbar.Top, scrollbar.Height));
+        Assert.Equal((510f, 7f), (divider.Top, divider.Height));
+        Assert.Equal(3, footers.Count);
+        Assert.All(footers, footer => Assert.Equal((520f, 55f), (footer.Top, footer.Height)));
+
+        ClickTab(layout, left: 92f);
+        Assert.True(scrollbar.Visible);
+    }
+
     // ── Helpers ──────────────────────────────────────────────────────────────
 
     private static void ClickTab(ImportedLayout layout, float left)
@@ -1482,6 +1517,15 @@ public class CharacterStatControllerTests
         tab.OnClick!();
     }
 
+    private static void ApplyLayoutPass(UiElement parent)
+    {
+        foreach (var child in parent.Children)
+        {
+            child.ApplyAnchor(parent.Width, parent.Height);
+            ApplyLayoutPass(child);
+        }
+    }
+
     private static string FirstRowName(UiElement list)
     {
         var row = Descendants(list).OfType<UiClickablePanel>().FirstOrDefault();