refactor(world): extract live entity network updates

Move Position, Vector, State, Movement, and equal-generation CreateObject routing out of GameWindow while preserving per-channel authority, ForcePosition acknowledgement, and motion-runtime ownership. Add adversarial authority and exact-wire coverage so reentrant updates and GUID reuse cannot publish stale state.

src/AcDream.App/Input/LocalPlayerOutboundController.cs

@@ -121,6 +121,47 @@ public sealed class LocalPlayerOutboundController
             controller.SimTimeSeconds);
     }
 
+    /// <summary>
+    /// Retail ForcePosition acknowledgement sent immediately after the local
+    /// body is blipped. Unlike the periodic post-network sender, this bypasses
+    /// the elapsed/difference predicate but still requires a valid grounded
+    /// canonical frame.
+    /// </summary>
+    internal void SendImmediatePosition(
+        WorldSession? session,
+        PlayerMovementController? controller)
+    {
+        if (session is null
+            || controller is null
+            || !controller.CanSendPositionEvent)
+        {
+            return;
+        }
+
+        if (!controller.TryGetOutboundPosition(out Position outboundPosition))
+            return;
+        uint cellId = outboundPosition.ObjCellId;
+        Vector3 position = outboundPosition.Frame.Origin;
+        Quaternion rotation = outboundPosition.Frame.Orientation;
+
+        uint sequence = session.NextGameActionSequence();
+        byte[] body = AutonomousPosition.Build(
+            gameActionSequence: sequence,
+            cellId: cellId,
+            position: position,
+            rotation: rotation,
+            instanceSequence: session.InstanceSequence,
+            serverControlSequence: session.ServerControlSequence,
+            teleportSequence: session.TeleportSequence,
+            forcePositionSequence: session.ForcePositionSequence,
+            lastContact: 1);
+        session.SendGameAction(body);
+        controller.NotePositionSent(
+            outboundPosition,
+            controller.ContactPlane,
+            controller.SimTimeSeconds);
+    }
+
     public bool TrySendMovement(
         WorldSession? session,
         PlayerMovementController? controller,