fix(ui): preserve retail item titles and spacing

Carry PublicWeenieDesc material type into the live object model so examination titles use the DAT-authored material prefix. Preserve retail AddItemInfo empty appends and embedded armor separator, restoring the deliberate blank rows between appraisal sections.

Co-authored-by: Codex <codex@openai.com>

tests/AcDream.Core.Net.Tests/WorldSessionRadarTests.cs

@@ -50,6 +50,17 @@ public sealed class WorldSessionRadarTests
         Assert.Equal(0x50000002u, spawn.PetOwnerId);
     }
 
+    [Fact]
+    public void ToEntitySpawn_PreservesMaterialType()
+    {
+        var spawn = WorldSession.ToEntitySpawn(MinimalParsed() with
+        {
+            MaterialType = 77u,
+        });
+
+        Assert.Equal(77u, spawn.MaterialType);
+    }
+
     private static CreateObject.Parsed MinimalParsed() => new(
         Guid: 0x50000001u,
         Position: null,