fix(interaction): bind selection to live incarnations

Carry local WorldEntity identity through render hits, lighting pulses, and deferred movement actions so GUID reuse cannot target a replacement. Reset all session-owned selection and ItemHolder state and prevent combat auto-target during teardown.

tests/AcDream.Core.Tests/Selection/RetailWorldPickerTests.cs

@@ -30,6 +30,7 @@ public sealed class RetailWorldPickerTests
 
         Assert.NotNull(hit);
         Assert.Equal(2u, hit.Value.ServerGuid);
+        Assert.Equal(1002u, hit.Value.LocalEntityId);
         Assert.True(hit.Value.PolygonHit);
     }
 
@@ -72,6 +73,7 @@ public sealed class RetailWorldPickerTests
     {
         var front = new RetailSelectionPart(
             1u,
+            1001u,
             0,
             Matrix4x4.Identity,
             new RetailSelectionMesh(
@@ -92,6 +94,7 @@ public sealed class RetailWorldPickerTests
             * Matrix4x4.CreateTranslation(0f, 0f, -10f);
         var part = new RetailSelectionPart(
             3u,
+            1003u,
             0,
             transform,
             new RetailSelectionMesh(Vector3.Zero, 1f, [SquareAtLocalZ(0f)]));
@@ -152,6 +155,7 @@ public sealed class RetailWorldPickerTests
         float sphereRadius = 2f)
         => new(
             guid,
+            guid + 1000u,
             0,
             Matrix4x4.CreateTranslation(0f, 0f, z),
             new RetailSelectionMesh(