refactor(update): cut over the frame orchestrator

Reduce GameWindow.OnUpdate to one typed orchestration call and remove transitive window callbacks from teardown, liveness, teleport placement, live presentation, auto-entry, and entity packet routing. Preserve the frozen retail object/network order while making the production owner graph explicit and testable.

src/AcDream.App/Rendering/LiveEntityPartArrayLifecycle.cs

@@ -0,0 +1,19 @@
+using AcDream.App.World;
+
+namespace AcDream.App.Rendering;
+
+/// <summary>Routes retail PartArray world-entry boundaries to live animation owners.</summary>
+internal sealed class LiveEntityPartArrayLifecycle
+{
+    private readonly LiveEntityAnimationRuntimeView<LiveEntityAnimationState> _animations;
+
+    public LiveEntityPartArrayLifecycle(
+        LiveEntityAnimationRuntimeView<LiveEntityAnimationState> animations) =>
+        _animations = animations ?? throw new ArgumentNullException(nameof(animations));
+
+    public void HandleEnterWorld(uint localEntityId)
+    {
+        if (_animations.TryGetValue(localEntityId, out LiveEntityAnimationState? animation))
+            animation.Sequencer?.Manager.HandleEnterWorld();
+    }
+}