Abstract and publication identity

We construct an exact smooth split–copy–return protocol for a Gaussian writer and a finite bank of retained position archives. Its complete guidance endpoint map is an area-preserving deformation of a baker map. At every finite separation, a singular archive population, or an exactly retained copy of an initial archive coordinate, can preserve the writer's full fine information: writer-only regularity does not imply conditional preparation. We prove a positive alternative using weak physical relative scores of the complete original conditional law. Sectional bounded-variation estimates and explicitly charged actual tails give quantitative averaged conditional readiness jointly with all final archive coordinates, without a density cap or finite quantile Fisher information. A finite $102$-coordinate example gives readiness below $1.0052\times10^{-5}$ and, using one common initial box, the same ceiling for a subsequent labelled projective instrument with an arbitrary finite internal reference. A distinct receiver copies the earlier writer event and retains its sign under the specified holding dynamics. Uniform full conditional writer-score bounds also yield finite-resource existence as the archive bank grows. The results use a declared controlled canonical-current parent; independent material control and preparation-law warrant remain separate hypotheses.