Executable Gauge-Running Hardening of the QDL–SO10–1 Grand-Unification Benchmark: Revised Coupling Closure, Calibrated Threshold Targets, and Proton-Decay Rescaling

The QDL–SO10–1 grand-unification sequence defines a closure-first SO(10)-compatible benchmark within the Quantized Dimensional Ledger (QDL) program. The first three papers in the sequence established a fixed numerical benchmark, its low-energy phenomenology, and a robustness/failure-mode audit. The present paper begins the executable hardening sequence. This paper provides the v0.2 executable gauge-running hardening result for QDL–SO10–1. The v0.1 artifact showed that the original declared target αU−1=25.6\alpha_U^{-1}=25.6αU−1=25.6 is not reproduced by the minimal pure-gauge executable scaffold, yielding an old-target RMS residual of 18.92788118.92788118.927881. The v0.2 artifact resolves the dominant…