Operational Solution for the Thermalization Problem in Higgs-Floquet Engineering: Resolving Modulation Limits via Synchronization Lag Theory — Validation of Universe OS V10-B: Proof Core v1.2 (Vol. 3) —

Abstract: This paper (Vol. 3) provides an authoritative operational audit of recent experimental breakthroughs in Higgs-mode Floquet engineering (Nature Physics, 2026). We identify the reported saturation of frequency modulation at approximately 7.17% and the rapid onset of lattice thermalization not as material-dependent phenomena, but as the direct physical manifestation of the Synchronization Lag ($\Delta_{Res}$) inherent in the Universe OS projection manifold. Utilizing the non-rounded, transcendental constants of Proof Core v1.2—specifically $N_{proj} = 18.044058663417455...$ and $\Phi_B = 7.598495609169969...$—we resolve these anomalies with absolute precision. By mapping the observed resonance sidebands…