fix #385: Options dropdowns — white centered text + size-to-content popup

User gate report (Campaign OP happy-testing round, 2026-08-13): every
Config-tab dropdown drew its text gold + left-aligned and its popup a
fixed 6 rows regardless of item count. All three were unmeasured styling
divergences — the authored data (new probe menuprobe3, live DAT) says:

- button label child 0x10000355: fontColor white, hJustify=Center
- row template 0x1000035A: fontColor white, hJustify=Center
- popup ListBox 0x10000358: edge-docked L=T=R=B=1, the authored condition
  arming retail UIElement_Menu::RecalculatePopupSize @0x0046caf0 —
  popup resizes to the ListBox's summed content height, uncapped
  (0x0046e5f4..0046e66c via ResizeScrollableArea's 0x32 broadcast)

UiMenu gains three opt-in properties (ButtonTextCentered,
ItemTextCentered, PopupSizeToContent) plus retail Open @0x0046cc42's
empty-list gate; chat + vendor keep the class defaults, so their shipped
behavior is untouched. ConfigOptionsPageController.ApplyMenuChrome wires
all four corrections for the 8 Config menus with the probe citation.

The same probe found vendor's authored popup ListBox is ALSO docked while
our vendor dropdown ships G5's fixed 6-row window — filed as #386 +
register row AD-88 (UNCLEAR: the G5 retail screenshot and the decomp
mechanism conflict) instead of silently reworking a user-gated surface.

The "resolution change resizes the window" observation from the same
report is #374's designed windowed-mode behavior (display-mode switching
is #376/#377) — no change.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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

@@ -564,6 +564,49 @@ public sealed class ConfigOptionsPageControllerTests
         Assert.Equal(1, fakeBindings.AudioSaves[^1].SoundFeatures);
     }
 
+    /// <summary>User gate report 2026-08-13: every Config dropdown drew its
+    /// text gold + left-aligned and its popup a fixed 6 rows. The corrected
+    /// values are MEASURED authored facts (menuprobe3,
+    /// <see cref="OptionsPanelLiveMountProbeTests.ProbeMenuPopupSizingAndTextStyle"/>):
+    /// label child 0x10000355 + row template 0x1000035A are white +
+    /// hJustify=Center, and popup ListBox 0x10000358 is edge-docked
+    /// (L=T=R=B=1), arming retail's RecalculatePopupSize size-to-content
+    /// path. Asserted on ALL 8 menus — one shared ApplyMenuChrome must not
+    /// quietly skip any.</summary>
+    [Fact]
+    public void MenuRows_All8_UseTheAuthoredTextStyleAndSizeToContent()
+    {
+        ImportedLayout layout = FixtureLoader.LoadOptionsPanelHost();
+        OptionsPanelController controller = OptionsPanelController.Bind(
+            layout,
+            new OptionsPanelController.Callbacks(
+                Toggle: () => { },
+                RequestExitToCharacterSelection: () => { },
+                ExitGame: () => { },
+                UseMouseTurningSettings: () => { },
+                DisplaySystemMessage: _ => { }))!;
+        var fakeBindings = new FakeBindings();
+        Assert.True(ConfigOptionsPageController.Bind(
+            layout,
+            controller.ConfigPage,
+            MakeTemplateResolver(),
+            (_, _) => null,
+            fakeBindings.ToBindings(),
+            resolveSprite: _ => (1u, 8, 8)));
+
+        var listBox = Assert.IsType<UiTemplateListBox>(
+            layout.FindElement(ConfigOptionsPageController.ListBoxElementId));
+        List<UiMenu> menus = CollectMenus(listBox);
+        Assert.Equal(8, menus.Count);
+        foreach (UiMenu menu in menus)
+        {
+            Assert.Equal(System.Numerics.Vector4.One, menu.TextColor);
+            Assert.True(menu.ButtonTextCentered);
+            Assert.True(menu.ItemTextCentered);
+            Assert.True(menu.PopupSizeToContent);
+        }
+    }
+
     [Fact]
     public void MenuRow_Resolution_IsStringBacked_AndWritesThroughDisplayBindings()
     {