fix: social gate round 2, part 1 - border-only move cursor, literal-\n

empty state, retail amber row selection

- Move cursor (user-directed, ALL windows): HoverWindowMove now
  advertises only where the window frame element itself wins the
  hit-test - its border pixels; interior points resolve to content
  children. Matches retail's Dragbar-chrome-only move cursor.
  Whole-surface dragging still works, it just does not advertise.
- Empty-state text (round 2): the DAT stores the LITERAL two-character
  escape backslash-n (probe-verified - the dump printed the escape, not
  line breaks), so the round-1 newline split never matched. Escapes are
  normalized before splitting in DatWidgetFactory authored text.
- Selected fellow amber (user: "check retail"): probe-verified - the
  row name band 0x10000282 AUTHORS the retail selected-row art
  (DirectState 0x06001450 + Highlight 0x06001451, the amber). Selection
  flips the band's ActiveState to Highlight; no invented tint.

App suite 4,976/3 skips. Confirmation-text + refused-drop-notification
research (the round's items 4-5) lands as part 2.

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

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

@@ -637,6 +637,20 @@ public sealed class SocialPanelLiveMountProbeTests
                 $"[clickprobe] NOT-in-fellowship synthetic click -> optionWrites=[{string.Join(",", optionWrites)}]");
         }
 
+        // The fellow row template's authored STATES (gate round 2: retail's
+        // selected-row amber — which element carries a Highlight/selected
+        // state, and what media?).
+        if (UiElement.FindDescendant(uiRoot, 0x10000279u) is UiTemplateListBox rosterBox
+            && rosterBox.Templates.Count > 0)
+        {
+            ElementInfo? rowInfo = LayoutImporter.ImportInfos(
+                dats,
+                rosterBox.Templates[0].TemplateLayoutId,
+                rosterBox.Templates[0].TemplateElementId);
+            if (rowInfo is not null)
+                DumpStates(rowInfo, 0);
+        }
+
         // Friends + Squelch action widgets: authored labels → button roles
         // (never guess an id's role).
         foreach (uint pageId in new[] { 0x10000513u, 0x1000054Au })
@@ -672,6 +686,19 @@ public sealed class SocialPanelLiveMountProbeTests
         return (x, y);
     }
 
+    private static void DumpStates(ElementInfo info, int depth)
+    {
+        string states = string.Join(
+            ",",
+            info.StateMedia.Select(kv => $"'{kv.Key}'=0x{kv.Value.File:X8}"));
+        Console.WriteLine(
+            $"[clickprobe] {new string(' ', depth * 2)}ROWSTATE 0x{info.Id:X8} type=0x{info.Type:X8} "
+            + $"({info.X},{info.Y} {info.Width}x{info.Height}) default='{info.DefaultStateName}' "
+            + $"media=[{states}]");
+        foreach (ElementInfo c in info.Children)
+            DumpStates(c, depth + 1);
+    }
+
     private static void DumpActionWidgets(UiElement el, int depth)
     {
         string extra = el switch