1# Verification checks (P4)23- Clean re-run: deleted outputs, re-ran analysis.py; SHA-256 of results.json, analytic.csv, exclusions.csv identical: PASS4- analytic rows == n_analysed: PASS5- n_valid == n_analysed: PASS6- n_valid+n_unreadable == control: PASS7- sum recomputed from analytic.csv: PASS8- sum_valid+implied == control: PASS9- mean recomputed: PASS10- median ppm2 recomputed: PASS11- ledger rows consistent: PASS12- ledger starts at n_input_rows and ends at n_analysed: PASS13- unique sale_id in analytic: PASS14- muni gaps sum == n_unreadable: PASS15- all muni gaps >= 0: PASS16- mean between min and max price: PASS17- implied mean of unreadable within valid price range: PASS18- price per m2 range in analytic data: 1320.6 to 6923.1 CAD/m2 (plausible, no anomalies)19- Magnitude vs baseline: valid count is 97.0% of control count; valid sum is 96.8% of control sum.20