feat(rendering): pack scene dispatcher inputs

Capture immutable presentation payloads in the render scene, flatten unique entity and mesh-part records into the borrowed frame arena, and compare every routed dispatcher input tuple without changing the production draw source.

src/AcDream.App/Rendering/RetailPViewRenderer.cs

@@ -257,6 +257,8 @@ public sealed class RetailPViewRenderer
                 _lookInFrames,
                 drawableCells,
                 ctx.Cells,
+                ctx.AnimatedEntityIds,
+                ctx.PlayerLandblockId ?? 0,
                 ctx.RootCell.IsOutdoorNode);
             return result;
         }