SGUFT G-closure V15 (COS-SIN1): Adjudicable Cosmological Contraction-to-Singularity-Nearby Evolution Demonstrator with Divergence Classification, Audited Regularization Convergence, and Isolation/Reachability-Proxy Emergence — RUN_G_COSSIN_0001_COSSIN1

This record archives the SGUFT G-closure V15 layer (COS-SIN1), an adjudicable (PASS/FAIL) dynamic evidence package extending the Standard-B “dynamics must look like dynamics” requirement from black-hole evolution to a cosmological contraction scenario approaching a singularity neighborhood. The package provides a reproducible time-evolution suite and frozen adjudication rules for three coupled structural claims: (i) a divergence classification in which a singularity-sensitive unregularized proxy enters a divergence regime near the contraction endpoint; (ii) audited regularization control via regularized proxies evaluated under two regularizer families (HK/LP) and a cutoff ladder, requiring convergence under frozen thresholds; and (iii) emergence and strengthening of an isolation/reachability surrogate that captures exterior/interior (or accessible/inaccessible) separation as contraction proceeds.Adjudication depends only on declared outputs together with audit/manifest under frozen thresholds; explanatory materials, if present, are excluded from adjudication. The record contains three artifacts: a minimal reproducibility pack (only_pack), a full evidence pack (evidence_pack), and a summary pack (summary_pack) providing CSV/JSON summaries, regeneration scripts, and a manifest.