fix(interaction): restore retail loot placement and world-drop projection

tests/AcDream.App.Tests/Interaction/WorldSelectionQueryTests.cs

@@ -319,6 +319,75 @@ public sealed class WorldSelectionQueryTests
         Assert.Equal(4f, radius);
     }
 
+    [Fact]
+    public void VividTargetMarkerWaitsForFreshProjectionWhenDropMovePrecedesPosition()
+    {
+        var h = new Harness();
+        WorldEntity entity =
+            h.Add(Target, new Vector3(3f, 4f, 0f), ItemType.Misc);
+
+        Assert.NotNull(h.Query.ResolveVividTargetInfo(Target));
+
+        Assert.True(h.Objects.MoveItem(Target, Player, newSlot: 0));
+        Assert.True(h.Runtime.WithdrawLiveEntityProjection(Target));
+        Assert.Null(h.Query.ResolveVividTargetInfo(Target));
+
+        // ACE may confirm InventoryPutObjectIn3D before sending the fresh
+        // Position. The retained entity still has the old ground pose here.
+        Assert.True(h.Objects.MoveItem(Target, 0u, newSlot: -1));
+        Assert.Null(h.Query.ResolveVividTargetInfo(Target));
+
+        var newPosition = new Vector3(30f, 40f, 2f);
+        entity.SetPosition(newPosition);
+        Assert.True(h.Runtime.RebucketLiveEntity(Target, 0x0101_0001u));
+
+        var marker = h.Query.ResolveVividTargetInfo(Target);
+        Assert.NotNull(marker);
+        Assert.Equal(newPosition + Vector3.UnitX, marker.Value.SelectionSphereCenter);
+    }
+
+    [Fact]
+    public void VividTargetMarkerUsesFreshPoseWhenPositionPrecedesDropMove()
+    {
+        var h = new Harness();
+        WorldEntity entity =
+            h.Add(Target, new Vector3(3f, 4f, 0f), ItemType.Misc);
+        Assert.True(h.Objects.MoveItem(Target, Player, newSlot: 0));
+        Assert.True(h.Runtime.WithdrawLiveEntityProjection(Target));
+
+        var newPosition = new Vector3(30f, 40f, 2f);
+        entity.SetPosition(newPosition);
+        Assert.True(h.Runtime.RebucketLiveEntity(Target, 0x0101_0001u));
+
+        // The spatial pose is current, but ownership continues to suppress the
+        // marker until ServerSaysMoveItem publishes the world placement.
+        Assert.Null(h.Query.ResolveVividTargetInfo(Target));
+
+        Assert.True(h.Objects.MoveItem(Target, 0u, newSlot: -1));
+        var marker = h.Query.ResolveVividTargetInfo(Target);
+        Assert.NotNull(marker);
+        Assert.Equal(newPosition + Vector3.UnitX, marker.Value.SelectionSphereCenter);
+    }
+
+    [Fact]
+    public void VividTargetMarkerRejectsRetainedProjectionInsideExternalContainer()
+    {
+        var h = new Harness();
+        const uint corpse = 0x7000_0040u;
+        h.Add(Target, new Vector3(3f, 4f, 0f), ItemType.Misc);
+        h.Objects.AddOrUpdate(new ClientObject
+        {
+            ObjectId = corpse,
+            Name = "Corpse",
+            Type = ItemType.Container,
+        });
+
+        Assert.True(h.Objects.MoveItem(Target, corpse, newSlot: 0));
+
+        Assert.False(h.Objects.IsOwnedByObject(Target, Player));
+        Assert.Null(h.Query.ResolveVividTargetInfo(Target));
+    }
+
     private static SelectionCameraSnapshot Camera()
     {
         Matrix4x4 view = Matrix4x4.CreateLookAt(