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/World/LocalPhysicsTimestampPublisher.cs

@@ -0,0 +1,43 @@
+using AcDream.App.Input;
+using AcDream.App.Net;
+
+namespace AcDream.App.World;
+
+internal interface IAcceptedLocalPhysicsTimestampPublisher
+{
+    void Publish(uint serverGuid, AcceptedPhysicsTimestamps timestamps);
+}
+
+/// <summary>
+/// Publishes accepted local-player physics timestamps to the current exact
+/// session without retaining the window host.
+/// </summary>
+internal sealed class LiveSessionLocalPhysicsTimestampPublisher
+    : IAcceptedLocalPhysicsTimestampPublisher
+{
+    private readonly ILocalPlayerIdentitySource _identity;
+    private readonly ILiveWorldSessionSource _session;
+
+    public LiveSessionLocalPhysicsTimestampPublisher(
+        ILocalPlayerIdentitySource identity,
+        ILiveWorldSessionSource session)
+    {
+        _identity = identity ?? throw new ArgumentNullException(nameof(identity));
+        _session = session ?? throw new ArgumentNullException(nameof(session));
+    }
+
+    public void Publish(uint serverGuid, AcceptedPhysicsTimestamps timestamps)
+    {
+        if (serverGuid != _identity.ServerGuid
+            || _session.CurrentSession is not { } session)
+        {
+            return;
+        }
+
+        session.PublishAcceptedLocalPhysicsTimestamps(
+            timestamps.Instance,
+            timestamps.ServerControlledMove,
+            timestamps.Teleport,
+            timestamps.ForcePosition);
+    }
+}