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.
Build a same-frame candidate product from incremental render-scene indices and compare its exact PView routes against the accepted current path without changing the production draw source.
Introduce two reusable generation-stamped arenas whose views are token-validated across build, publish, borrow, release, and abort. This is a non-drawing G0 seam for the incremental scene and changes no production consumer.
