An SO(10)-Compatible QDL Grand-Unification Benchmark with Two-Loop Running, Threshold Matching, and Proton-Decay Exposure

This record defines QDL–SO10–1, a fixed SO(10)-compatible benchmark in the Quantized Dimensional Ledger grand-unification sequence. The release is a benchmark-definition package, not a complete global scan. It includes the manuscript and machine-readable tables specifying the breaking chain, threshold spectrum, running intervals, matching corrections, neutrino-sector values, electroweak reference inputs, benchmark reconstruction map, and proton-decay exposure channels. The purpose is to make the QDL–SO10–1 benchmark citable, inspectable, and extensible for later numerical stress testing. The benchmark is defined by the breaking chain SO(10) → SU(4)_C × SU(2)_L × SU(2)_R → SU(3)_C × SU(2)_L × U(1)_Y, with M_U = 1.00 × 10^16 GeV, M_I = 4.70 × 10^13 GeV, α_U^−1 = 25.6, a seesaw-compatible right-handed-neutrino hierarchy, declared heavy-threshold spectrum, two-loop running blocks, matching corrections, and proton-decay exposure channels.