refactor(app): key live projections by runtime identity

Move materialized live-object sidecars and presentation worksets to exact RuntimeEntityKey ownership. Runtime remains the only GUID/incarnation/local-ID authority while hydration, animation, effects, lights, equipped children, renderer resources, visibility, liveness, and teardown resolve exact projection identities. Preserve synchronous callbacks, local-ID allocation order, and current rendering behavior.

src/AcDream.App/Streaming/WorldGenerationQuiescence.cs

@@ -62,18 +62,22 @@ internal sealed class WorldGenerationQuiescence
     private readonly WorldGenerationAvailabilityState _availability;
     private readonly SelectionState _selection;
     private readonly GpuWorldState _world;
+    private readonly Func<uint, uint?> _resolveLocalEntityId;
     private readonly IWorldAudioQuiescence? _audio;
 
     public WorldGenerationQuiescence(
         WorldGenerationAvailabilityState availability,
         SelectionState selection,
         GpuWorldState world,
+        Func<uint, uint?> resolveLocalEntityId,
         IWorldAudioQuiescence? audio)
     {
         _availability = availability
             ?? throw new ArgumentNullException(nameof(availability));
         _selection = selection ?? throw new ArgumentNullException(nameof(selection));
         _world = world ?? throw new ArgumentNullException(nameof(world));
+        _resolveLocalEntityId = resolveLocalEntityId
+            ?? throw new ArgumentNullException(nameof(resolveLocalEntityId));
         _audio = audio;
     }
 
@@ -85,7 +89,8 @@ internal sealed class WorldGenerationQuiescence
         uint? selected = firstEdge ? _selection.SelectedObjectId : null;
         bool clearWorldSelection =
             selected is uint selectedGuid
-            && _world.IsLiveEntityVisible(selectedGuid);
+            && _resolveLocalEntityId(selectedGuid) is uint localEntityId
+            && _world.IsLiveEntityVisible(localEntityId);
 
         _availability.Begin(generation);
         if (!firstEdge)