Contribution and prospective impact

The restricted centralizer, the explicit non-descent witness, and the conditional compatibility tests make different claims testable without conflating them.

In particular, the free-shell witness prevents an off-shell nilpotence calculation from being promoted to an unchanged interacting quantum carrier. The report recovery shows that this limitation does not prevent complete finite reporting of separately supplied classical data.

The potential impact is methodological: a later continuation receives an explicit list of identities, domains, and accessible outputs to construct, rather than a claim of quantum restoration borrowed from shared terminology. No priority claim is made for the general BV, quotient, or channel-composition principles used in the assembly.