Round 2 verification audit for C086

Model: gpt-5

Claim: Fig. (kappa_Rt): the convergence rate R_t versus repump rate kappa for two branching ratios gamma, comparing the empirical Eq. (S18) (factor 2.4) with the numerical Liouvillian gap at Omega_C = 6 J.

Source alignment: source/supp_content.tex:244-249 (Fig. kappa_Rt)

Prior official verdict: partial with failure_reason None.

Executable evidence: run.py. Sandbox rerun logs: run.log.

Independent audit: I scanned the copied script for imports/shared helper dependencies and reran it through the sandbox. The code is self-contained in this attempt directory and targets the claim strategy: Reproduce both the empirical and numerical R_t(kappa) curves at Omega_C=6J and compare to the figure.. I checked the relevant family model rather than relying only on exit status; the rerun is treated as one reproducibility input.

Decision: Round 2 verdict is partial with failure_reason None and limitations ['visual_match_only', 'paper_text_only_reimplementation']. Notes: Reproduced Fig kappa_Rt_with_beta: two panels sin^2(gamma)=0.40,0.99, log-log axes kappa 1e-2..1e4 J at Omega_C=6J, numerical Liouvillian gap (solid) vs empirical Eq S18 x2.4 (dashed). Curves overlap as in the paper; peak R_t ~0.052J (top), ~0.034J (bottom); median(emp/num)=1.10/0.94 over the formula-validity region. Tier-A visual match (visual_score 0.9); no raw data, no digitization -> capped at partial. See plot_comparison.json.