CE_5 Admissible Redescription Under Envelope NonContact

This paper demonstrates that admissible re-description is possible only under strict non-contact between constraint envelopes. Once an envelope is fixed, re-descriptions may occur internally, but any attempt to transfer structure, justification, or constraints across envelopes is shown to violate admissibility. The analysis is eliminative and necessity-based. It shows that apparent cross-envelope reasoning—such as global coordination, shared parameters, or meta-level reconciliation—depends on illicit scope transport that is not licensed by any envelope. When envelope non-contact is enforced, only internal re-descriptions remain admissible, and these preserve standing without introducing new structure. The result explains why cross-domain unification fails when treated as contact between envelopes, while internal coherence remains intact. No procedures, mappings, or translation rules are provided. The paper records a hard boundary on admissible re-description that preserves the integrity of constraint envelopes and prevents hidden admissibility violations.