fix(motion): restore retail object manager order

Process animation completion at the retail process_hooks boundary, then run targeting, movement, PartArray completion, and PositionManager in the named UpdateObjectInternal order for local, remote, hidden, and position-less animated objects. Retire TS-42 with deterministic conformance coverage.\n\nCo-authored-by: OpenAI Codex <codex@openai.com>

tests/AcDream.App.Tests/Input/RetailLocalPlayerFrameControllerTests.cs

@@ -127,6 +127,29 @@ public sealed class RetailLocalPlayerFrameControllerTests
         Assert.Equal(1f / 60f, timeAfterOneTick);
     }
 
+    [Fact]
+    public void TargetManager_ObservesPostTransitionPlayerPosition()
+    {
+        PlayerMovementController controller = CreateController();
+        Vector3 initial = controller.Position;
+        Vector3 positionSeenByTargetManager = new(float.NaN);
+        var local = new RetailLocalPlayerFrameController(
+            canPresentPlayer: () => true,
+            getController: () => controller,
+            captureInput: () => new MovementInput(Forward: true),
+            resolveLocalEntityId: () => 7u,
+            handleTargeting: () => positionSeenByTargetManager = controller.Position,
+            isHidden: () => false,
+            project: (_, _, _) => { },
+            sendPreNetwork: (_, _, _) => { },
+            sendPostNetwork: (_, _) => { });
+
+        local.AdvanceBeforeNetwork(PhysicsBody.MaxQuantum);
+
+        Assert.NotEqual(initial, controller.Position);
+        Assert.Equal(controller.Position, positionSeenByTargetManager);
+    }
+
     private static PlayerMovementController CreateController()
     {
         var engine = new PhysicsEngine();