What is added, and what is not a novelty claim

The classical plateau intertwiner and larger-support defect are those of VII-A CheungVIIA. The additional contribution is their supported conical realization, together with:

• a domain on which no global conical Cauchy premise is needed;

• an explicit separation of the apparatus metric from the formal metric input;

• a sourced finite table with nontrivial first- and second-order entries;

• a complete finite readout and a quantitative instrument-level approximation;

• a causal route carrying both the payload and its classical control record.

The possible usefulness is that a correct restricted identity and a surviving unrestricted failure can be carried through one operational interface without confusing either with a quantum anomaly or a field measurement.