Significance without priority inflation

The useful feature is simultaneous control of the limiting prescription, its coefficient topology, and the identity that survives in the unchanged scalar quotient. The proof shows why an inverse-width derivative estimate need not describe the actual solution limit, while retaining the genuine finite quadratic layer contribution.

The parent result is Cheung's X-D XD. The supported transfer, explicit topology comparison, edge-quantifier correction, and finite encoding stability make that result usable without identifying it with a sharper quantum-product programme.