Superconductivity: Zero Resistance as the Collective Lock of Paired Carriers at the Half-One

One axiom. One operation. Zero free parameters. In a superconductor, current flows with exactly zero resistance. BCS theory rests on electrons pairing (Cooper pairs) and condensing into one coherent state with an energy gap. This paper forces that structure from the fold. The superconducting carrier is a pair, and the pairing is the half-One meeting its other half: 1/2 + 1/2 = 1. The paired state then folds to unison, the One — a single collective locked state, the coherent condensate. Resistance is zero because, once the carriers are locked into one unison state, there is nothing to scatter piecemeal: you cannot deflect a single carrier without breaking the collective lock, which costs the full gap, so ordinary scattering — the source of all resistance — cannot act. Zero resistance is the collective lock of paired carriers reaching unison. Machine-checked; reproduces from one command. A standalone result within the Smithian Fold Theory of Everything (SFTOE). Full corpus, code, and the run-it-yourself VERIFY.md protocol: https://github.com/MettaMazza/Smithian-Fold-Theory