Definition: Decoder-relevant storage cut

Choose a frontier after the final encoding operation and before storage.

The raw decoder-relevant frontier consists of all systems, classical registers, and persistent control states present at that frontier that have scheduled paths to the decoder's scored output $O$. Persistent apparatus state is represented as a frontier system, not hidden in an operation name.

The storage cut is complete when all routes from the encoding inputs to $O$ cross this frontier and no undeclared system, record, or parameter later re-enters the decoder.

The experimenter's archive is excluded only because it has no path to $O$. It remains part of the complete attempted-run record used by the scorer.