Handoff

A successor receives:

1. the unchanged pair and ambiguity contract;

2. the full polarized Hessian formulas and species factors;

3. every mixed and scalar branch derivative;

4. the common attachment/residual-variable kernel description;

5. the exact six-branch retained germ and its local zero proofs;

6. the full $B_6$ fiber identity, explicitly limited to its branch;

7. the necessary wavefront and characteristic-ambiguity checks;

8. the unresolved complete joint-symbol test.

To discharge J2, the successor must prove cancellation of the complete expression (eq:retainedfull) with its lower-order control, or construct a prescription for that expression with its actual transverse degree, normalization, ambiguity, and wavefront theorem.

It receives neither failure of full cancellation nor permission to infer it from Proposition prop:B6tensor. It receives no admitted quantum coefficient.