Reproducibility Capsule for "Universal Acceleration from Boundary Addressability" (SPARC RAR/BTFR)

This repository contains the deterministic code, processed data, and verification figures required to reproduce the core RAR and BTFR results reported in the manuscript “Universal Acceleration from Boundary Addressability,” submitted to Physical Review D. The capsule reproduces the deep-regime scaling and normalization of the radial acceleration relation (RAR) and the baryonic Tully–Fisher relation (BTFR) using fixed-slope orthogonal distance regression on the public SPARC dataset. Raw SPARC input tables are redistributed verbatim for reproducibility and are not covered by the CC-BY-4.0 license; users must cite Lelli et al. (2016). Exploratory diagnostics (regime-shaded plots and permutation null tests) described in the Supplemental Material were generated using an extended analysis pipeline and are not regenerated here. This capsule is intended for rapid, deterministic verification of the paper’s headline quantitative claims.