feat(D.5.4): ObjectTableWiring (CreateObject=upsert, Delete=evict, 0x02CE) off GameWindow

CreateObject ingestion moves to Core.Net; GameWindow drops the EnrichItem call +
inline 0x02CE handler. Fixes the Coldeve blank-icon root cause: items with no PD
stub are now created, not dropped.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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

@@ -0,0 +1,97 @@
+using AcDream.Core.Items;
+using AcDream.Core.Net;
+using AcDream.Core.Net.Messages;
+
+namespace AcDream.Core.Net.Tests;
+
+/// <summary>
+/// D.5.4 Task 7 — ObjectTableWiring.
+///
+/// Integration test is omitted: WorldSession.EntitySpawned has no internal
+/// test seam to fire it without a real Tick + packet bytes, so subscription
+/// correctness is covered by build (type-checks) + the live run. Only the
+/// pure mapping (ToWeenieData) is unit-tested here.
+/// </summary>
+public sealed class ObjectTableWiringTests
+{
+    [Fact]
+    public void ToWeenieData_CopiesFieldsFromSpawn()
+    {
+        // Every EntitySpawn item field is set to a DISTINCT recognisable value so
+        // a positional transposition in ObjectTableWiring.ToWeenieData would trip
+        // at least one Assert.  All 22 WeenieData fields are verified below.
+        var spawn = new WorldSession.EntitySpawn(
+            Guid: 0x00000600u,
+            Position: null,
+            SetupTableId: null,
+            AnimPartChanges: System.Array.Empty<CreateObject.AnimPartChange>(),
+            TextureChanges: System.Array.Empty<CreateObject.TextureChange>(),
+            SubPalettes: System.Array.Empty<CreateObject.SubPaletteSwap>(),
+            BasePaletteId: null,
+            ObjScale: null,
+            Name: "Iron Sword",
+            ItemType: (uint)ItemType.MeleeWeapon,
+            MotionState: null,
+            MotionTableId: null)
+            with
+            {
+                WeenieClassId             = 0x00001001u,
+                IconId                    = 0x06001111u,
+                IconOverlayId             = 0x06002222u,
+                IconUnderlayId            = 0x06003333u,
+                UiEffects                 = 0x00000004u,
+                Value                     = 7,
+                StackSize                 = 1,
+                StackSizeMax              = 1,
+                Burden                    = 300,
+                ContainerId               = 0x000000C9u,
+                WielderId                 = 0x000000DAu,
+                ValidLocations            = 0x00000012u,   // MeleeWeapon wield mask
+                CurrentWieldedLocation    = 0x00000002u,   // right-hand
+                Priority                  = 0x00000005u,
+                ItemsCapacity             = 0,
+                ContainersCapacity        = 0,
+                Structure                 = 80,
+                MaxStructure              = 100,
+                Workmanship               = 4.5f,
+            };
+
+        var d = ObjectTableWiring.ToWeenieData(spawn);
+
+        // --- identity ---
+        Assert.Equal(0x00000600u, d.Guid);
+        Assert.Equal("Iron Sword",             d.Name);
+        Assert.Equal(ItemType.MeleeWeapon,     d.Type);
+
+        // --- weenie / icon ---
+        Assert.Equal(0x00001001u,              d.WeenieClassId);
+        Assert.Equal(0x06001111u,              d.IconId);
+        Assert.Equal(0x06002222u,              d.IconOverlayId);
+        Assert.Equal(0x06003333u,              d.IconUnderlayId);
+        Assert.Equal(0x00000004u,              d.Effects);
+
+        // --- quantity / economy ---
+        Assert.Equal(7,                        d.Value);
+        Assert.Equal(1,                        d.StackSize);
+        Assert.Equal(1,                        d.StackSizeMax);
+        Assert.Equal(300,                      d.Burden);
+
+        // --- container / wielder ---
+        Assert.Equal(0x000000C9u,              d.ContainerId);
+        Assert.Equal(0x000000DAu,              d.WielderId);
+
+        // --- equip masks ---
+        Assert.Equal(0x00000012u,              d.ValidLocations);
+        Assert.Equal(0x00000002u,              d.CurrentWieldedLocation);
+        Assert.Equal(0x00000005u,              d.Priority);
+
+        // --- capacity ---
+        Assert.Equal(0,                        d.ItemsCapacity);
+        Assert.Equal(0,                        d.ContainersCapacity);
+
+        // --- durability ---
+        Assert.Equal(80,                       d.Structure);
+        Assert.Equal(100,                      d.MaxStructure);
+        Assert.Equal(4.5f,                     d.Workmanship);
+    }
+}