The Karahan-Einstein Framework: A MEON Audit Trail for Spacetime-Torsion Models of Galactic Rotation Curves

This release presents the Karahan-Einstein Framework and the associated MEON V50 audit trail, a staged numerical investigation of whether galactic rotation-curve phenomenology can be modeled through macroscopic spacetime-torsion scaling rather than by invoking galaxy-specific dark-matter halo fits. The MEON audits evaluate fixed torsion anchors, high-N macroscopic extensions, pre-registered selection rules, residual anatomy, physical adequacy thresholds, and anti-cheat free-parameter sensitivity tests. Across the late-stage audits, the π/144 torsion anchor strongly improves over the π/16 reference for extended galaxies, while the pre-registered MES-HN rule with N=194 further improves over π/144 on the held-out test split. Residual anatomy audits show that conventional halo models retain a strong absolute BIC advantage in full-curve fitting, but that this advantage is concentrated primarily in the inner, baryon-dominated regions where per-galaxy halo parameters can absorb local structure and measurement uncertainty. Physical adequacy and anti-cheat audits therefore reframe the comparison: the MES-HN model is not treated as a curve-fitting replacement for every halo degree of freedom, but as a candidate physical-law approximation whose success should be judged by explicit, transparent near-enough thresholds and by its behavior outside the inner core. The final release includes summarized audit results, claim matrices, adequacy tables, anti-cheat sensitivity outputs, metadata for archival upload, and cryptographic checksums. The results support a threshold-dependent claim: MEON/MES-HN robustly improves over earlier fixed torsion anchors and approaches halo-like performance in physically relevant regimes, but does not by itself constitute independent proof that dark matter is obsolete. Further external validation, pre-registered datasets, and independent reproduction are required.