feat(vfx): port retail hidden and teleport presentation

Preserve canonical live-object ownership across Hidden transitions and remote teleport placement so effects, collision, streaming, and targeting remain synchronized.

tests/AcDream.App.Tests/UI/Layout/RadarSnapshotProviderTests.cs

@@ -96,6 +96,46 @@ public sealed class RadarSnapshotProviderTests
         Assert.True(snapshot.UiLocked);
     }
 
+    [Fact]
+    public void BuildSnapshot_UsesCanonicalPlayerWhileHiddenTargetsStayExcluded()
+    {
+        const uint player = 20u;
+        const uint hiddenTarget = 21u;
+        var objects = new ClientObjectTable();
+        objects.Ingest(Weenie(player, "Player", ItemType.Creature));
+        objects.Ingest(Weenie(hiddenTarget, "Hidden target", ItemType.Creature) with
+        {
+            RadarBehavior = (byte)RadarBehavior.ShowAlways,
+        });
+        var canonical = new Dictionary<uint, WorldEntity>
+        {
+            [player] = Entity(player, Vector3.Zero, Quaternion.Identity),
+            [hiddenTarget] = Entity(hiddenTarget, new Vector3(5f, 0f, 0f), Quaternion.Identity),
+        };
+        var interactionVisible = new Dictionary<uint, WorldEntity>();
+        var spawns = new Dictionary<uint, WorldSession.EntitySpawn>
+        {
+            [player] = Spawn(player),
+            [hiddenTarget] = Spawn(hiddenTarget),
+        };
+        var provider = new RadarSnapshotProvider(
+            objects,
+            interactionVisible,
+            spawns,
+            playerGuid: () => player,
+            playerYawRadians: () => 0f,
+            playerCellId: () => 0xA9B40001u,
+            selectedGuid: () => hiddenTarget,
+            coordinatesOnRadar: () => true,
+            uiLocked: () => false,
+            playerEntities: canonical);
+
+        var snapshot = provider.BuildSnapshot();
+
+        Assert.NotNull(snapshot.CoordinatesText);
+        Assert.Empty(snapshot.Blips);
+    }
+
     private static WorldEntity Entity(uint guid, Vector3 position, Quaternion rotation) => new()
     {
         Id = guid,