SPECTRAL–COVARIANCE CLOSURE AND AUGMENTED RIGHT-INVERTIBILITY IN THE FORCED NAVIER–STOKES BLOWUP CONSTRUCTION: A STRUCTURAL RECONSTRUCTION

A structural reconstruction of the forced three-dimensional incompressible Navier--Stokes blowup construction publicly released by OpenAI on September 8, 2026. The paper isolates five structural certificates, makes the pulse Green estimate and coefficient spaces quantitative, renormalizes covariance transversality so it is uniform in band, and introduces one augmented lower-triangular operator whose right-invertibility simultaneously solves the pulse-source and signed-stress correction problem. It does not claim priority for the underlying blowup theorem.