1# Verification checks (P4)2- Clean re-run of out/analysis.py (outputs deleted first): results.json, analytic.csv, exclusions.csv byte-identical (SHA-256): PASS3- data/firms.csv SHA-256 unchanged: PASS45- analytic rows == n_analysed: PASS6- n_unique - n_missing == n_analysed: PASS7- ledger first n_before == n_input_rows: PASS8- ledger last n_after == n_analysed: PASS9- ledger n_before-n_removed==n_after: PASS10- ledger chaining: PASS11- n_input - total removed == n_analysed: PASS12- firm_id unique in analytic: PASS13- no NaN revenue_musd: PASS14- mean recomputed: PASS15- median recomputed: PASS16- se>0: PASS17- revenue_musd within plausible range (0,10000): PASS18- raw baseline >> cleaned mean (unit inflation): PASS19- range revenue_musd: 5.742 2057.57520