S21 Unified Theory: Pre-Registered Predictions and Reproducibility Code

Pre-registration deposit for "The S21 Unified Theory: Deriving Standard Model Parameters from N=6 Planck-Scale Information Capacity." This project contains: (1) twelve novel predictions with exact numerical values and falsification criteria, (2) thirty-nine retrodictions of known Standard Model parameters with statistical validation (χ²_red = 0.65, global p = 0.95), and (3) the complete reproducibility code package (Python 3.8+, NumPy/SciPy). The theoretical framework derives all predictions from a single axiom (N=6 bits per Planck cell) with 1.5 effective parameters (one dimensionful input M_Pl plus a weakly-motivated CC exponent).