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/Composition/LivePresentationComposition.cs

@@ -349,7 +349,19 @@ internal sealed class LivePresentationCompositionPhase
                 new List<CompositeLiveEntityResourceLifecycle.Owner>
                 {
                     new(
-                        entity => _ = entitySpawnAdapter.OnCreate(entity),
+                        entity =>
+                        {
+                            if (liveEntities is null
+                                || !liveEntities.TryGetRecordByLocalEntityId(
+                                    entity.Id,
+                                    out LiveEntityRecord record)
+                                || record.ProjectionKey is not { } key)
+                            {
+                                throw new InvalidOperationException(
+                                    "Live presentation registration requires an exact Runtime projection key.");
+                            }
+                            _ = entitySpawnAdapter.OnCreate(key, entity);
+                        },
                         entity => _ = entitySpawnAdapter.OnRemove(entity)),
                     new(
                         entityScriptActivator.OnCreate,
@@ -688,7 +700,7 @@ internal sealed class LivePresentationCompositionPhase
             });
         var radarSnapshotProvider = new RadarSnapshotProvider(
             d.Objects,
-            () => liveEntities.WorldEntities,
+            liveEntities,
             () => liveEntities.Snapshots,
             playerGuid: () => d.PlayerIdentity.ServerGuid,
             playerYawRadians: () => d.PlayerController.Controller?.Yaw ?? 0f,
@@ -696,7 +708,6 @@ internal sealed class LivePresentationCompositionPhase
             selectedGuid: () => d.Selection.SelectedObjectId,
             coordinatesOnRadar: () => d.Settings.Gameplay.CoordinatesOnRadar,
             uiLocked: () => d.Settings.Gameplay.LockUI,
-            playerEntities: () => liveEntities.MaterializedWorldEntities,
             spatialQuery: () => worldState);
         bindings.Adopt(
             "radar snapshot",