refactor(interaction): add selection interaction owner

Introduce a tested controller for selection mutations, target-mode interception, outbound ordering, Use/PickUp lifetime, and live-incarnation cleanup, plus narrow movement and WorldSession transport adapters.

src/AcDream.App/Interaction/PlayerInteractionMovementSink.cs

@@ -0,0 +1,57 @@
+using AcDream.App.Input;
+using AcDream.Core.Physics;
+using AcDream.Core.Physics.Motion;
+
+namespace AcDream.App.Interaction;
+
+internal interface IPlayerInteractionMovementSink
+{
+    bool BeginApproach(InteractionApproach approach);
+}
+
+/// <summary>
+/// Installs retail's client-side TurnToObject/MoveToObject prediction through
+/// the same MovementManager used by authoritative movement packets.
+/// </summary>
+internal sealed class PlayerInteractionMovementSink(
+    Func<PlayerMovementController?> player)
+    : IPlayerInteractionMovementSink
+{
+    private readonly Func<PlayerMovementController?> _player = player
+        ?? throw new ArgumentNullException(nameof(player));
+
+    public bool BeginApproach(InteractionApproach approach)
+    {
+        PlayerMovementController? controller = _player();
+        if (controller?.MoveTo is null)
+            return false;
+
+        var parameters = new MovementParameters
+        {
+            DistanceToObject = approach.UseRadius,
+            CanCharge = approach.CanCharge,
+        };
+        var movement = new MovementStruct
+        {
+            ObjectId = approach.Target.ServerGuid,
+            TopLevelId = approach.Target.ServerGuid,
+            Pos = new Position(
+                approach.Player.CellId,
+                approach.Target.Entity.Position,
+                System.Numerics.Quaternion.Identity),
+            Params = parameters,
+            Type = approach.IsCloseRange
+                ? MovementType.TurnToObject
+                : MovementType.MoveToObject,
+            Radius = approach.TargetRadius,
+            Height = approach.TargetHeight,
+        };
+
+        // P1's wire MoveToObject store marks the command non-autonomous.
+        // The speculative local install must do the same or the next raw-input
+        // pump overwrites it before ACE's authoritative movement arrives.
+        controller.SetLastMoveWasAutonomous(false);
+        controller.Movement.PerformMovement(movement);
+        return true;
+    }
+}