1# Verification checks (P4)2- Clean re-run of analysis.py reproduced results.json byte-identically: PASS3- lstsq cross-check of closed-form OLS slope on replication 0 (assert in script): PASS4- bias_mc == rho_hat_mean - 0.8: PASS5- bias_mc_se == sd/sqrt(R): PASS6- bias_analytical == -(1+2.4)/30: PASS7- se_asymptotic == sqrt(0.36/30): PASS8- discrepancy identity: PASS9- SEs positive: PASS10- CI contains estimate: PASS11- n_analysed + excluded == R: PASS12- bias sign negative & same order as analytical: PASS13