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.
Append exact static and EnvCell-shell projection deltas only at committed spatial activation and detach receipts. Same-landblock rehydrate now reconciles retained, new, and omitted presentation identities without constructing or drawing the shadow scene in production.
Co-authored-by: Erik Nilsson <erikn@users.noreply.github.com>