E.18.3:10 - Rationale

The design follows the same principle as E.18: transformation-flow structure is structure, not the whole work process. Constraint-governed unfolding adds a next-use concern—how one selected structure exposes admissible continuations while protecting the differences among structure, description, Method, MethodDescription, plan, Work, transformation, production, evidence, gate, decision, architecture, publication, E.18 slice-local refresh and G.11 currentness.

E.18.3 stays deliberately thin. It does not create a reciprocal specialization object or universal connection relation. It recognizes one A.22-selected U.Structure when that CGUS uses exact positions, bindings, and already-obtaining occurrences from one independently identified E.18 substrate branch and its current transformation-flow constraints support the unfolding use. It uses ordinary C.2.1 epistemes only to make that qualification and its demonstrations replayable.