Data-only archive for Bayesian evidence analysis of nanohertz gravitational-wave spectra

Data-only reproducibility archive for the Symmetry manuscript Bayesian Evidence for Angular Symmetry and Spectral Curvature in the Nanohertz Gravitational-Wave Background. This archive contains public data inputs, analysis scripts, numerical evidence outputs, posterior samples, environment files, and reproducibility metadata. It intentionally does not include the manuscript PDF, LaTeX source, or MDPI submission package.本存档为《Symmetry》期刊论文《纳赫兹引力波背景（Nanohertz Gravitational-Wave Background）下角对称性与谱曲率的贝叶斯证据》的仅数据可复现性存档包。该存档包含公开数据输入文件、分析脚本、数值证据输出结果、后验样本、环境配置文件以及可复现性元数据。本存档刻意不包含论文PDF文件、LaTeX源码以及MDPI投稿套件。