test(physics): pin issue 270 animation fixes

src/AcDream.App/Physics/LiveEntityNetworkUpdateController.cs

@@ -168,9 +168,6 @@ internal sealed class LiveEntityNetworkUpdateController
         System.Numerics.Vector3 worldPos,
         uint cellId)
     {
-        if (cellId == 0)
-            return;
-
         var (radius, height) = _motionRuntime.GetSetupCylinder(serverGuid, entity);
         if (radius < 0.05f)
         {
@@ -193,33 +190,20 @@ internal sealed class LiveEntityNetworkUpdateController
         // retail's first frame would (position snapped onto the floor,
         // contact plane + CONTACT/ON_WALKABLE committed below). A sweep that
         // finds no floor (true airborne spawn) leaves the body airborne.
-        AcDream.Core.Physics.ResolveResult settle = _physicsEngine.ResolveWithTransition(
-            worldPos,
-            worldPos + new System.Numerics.Vector3(0f, 0f, -0.5f),
-            cellId,
-            sphereRadius: radius,
-            sphereHeight: height,
-            stepUpHeight: 0.4f,
-            stepDownHeight: 0.4f,
-            isOnGround: false,
-            body: remote.Body,
-            moverFlags: moverFlags,
-            movingEntityId: entity.Id);
-        if (!settle.Ok || !settle.InContact)
-            return; // no floor within reach — stays airborne like retail's fall
-
-        remote.Body.Position = settle.Position;
-
-        AcDream.Core.Physics.PhysicsObjUpdate.CommitSetPositionTransition(
+        if (!RemoteSpawnPlacementSettler.TrySettle(
+            _physicsEngine,
             remote.Body,
-            settle.InContact,
-            settle.OnWalkable,
-            settle.CollisionNormalValid,
-            settle.CollisionNormal,
-            previousContact: false,
-            previousOnWalkable: false,
+            worldPos,
+            cellId,
+            radius,
+            height,
+            moverFlags,
+            entity.Id,
             remote.Movement.HitGround,
-            remote.Motion.LeaveGround);
+            remote.Motion.LeaveGround))
+        {
+            return; // no floor within reach — stays airborne like retail's fall
+        }
         remote.Airborne = !remote.Body.OnWalkable;
     }