Readout and physical-model boundaries

The finite four-live-qubit class in X-Enter is an interface restriction on a specified family of first-order programs, including their input. It is not the fine-graining cost theorem, a rational-net resolution, or a field-to-qubit preparation theorem XEnter.

The cut quantities defined here are combinatorial resource counters. They are not a gravitational Noether current, a BV antibracket, a retarded field coefficient, or a physical causal cone. Likewise, the instrument ledger below does not instantiate the separately represented Models 1, 2, or 3 of manuscript IV. No gravitational or continuous-variable premise is imported.