This record deposits the referee-hardened manuscript package for Carrier Universality and Global Smoothness for the Periodic 3D Navier–Stokes Equations, a constraint-formalism impossibility proof of Fefferman’s periodic Navier–Stokes statement (B). The manuscript presents a non-PDE-native mathematical route to the official periodic problem. It does not claim to derive a new vortex-stretching estimate, a new coercive continuation criterion, a new BKM/Serrin-type regularity criterion, or a constru

