feat(ui): port retail appraisal panel

Preserve retail's one-pending-appraisal busy lifetime, parse the complete gated response, and mount the authored examination layout in the shared main-panel host. Keep known 3D preview and inscription-write gaps explicit in AP-110.

src/AcDream.App/UI/RetailPanelCatalog.cs

@@ -16,6 +16,12 @@ public static class RetailPanelCatalog
     public const uint Character = 11u;
     public const uint Magic = 13u;
     public const uint Vitae = 15u;
+    /// <summary>
+    /// Private retained-host identity for retail's floating examination UI.
+    /// The original opens it by notice rather than a gmPanelUI numeric child,
+    /// so this value is deliberately outside the DAT panel-id range.
+    /// </summary>
+    public const uint Examination = 0x8000_0001u;
 
     private static readonly (uint PanelId, string WindowName)[] Mounted =
     {
@@ -28,6 +34,7 @@ public static class RetailPanelCatalog
         (Character, WindowNames.Character),
         (Magic, WindowNames.Spellbook),
         (Vitae, WindowNames.Vitae),
+        (Examination, WindowNames.Examination),
     };
 
     private static readonly (uint PanelId, string WindowName)[] Toolbar =