# Verification checks (P4) - Clean re-run: results.json byte-identical after deleting outputs: PASS - CI contains beta: PASS - SEs positive: PASS - n_analysed=240: PASS - exclusions sum: PASS - decision consistent: PASS - CI width = 2*1.96*se_hac: PASS - mean identity alpha+beta*mean_g = mean_du: PASS - magnitude: mean_growth ~0.75 %/q (~3%/yr, not annualised): PASS - HAC SE > iid SE consistent with positive resid AC1: PASS - quarters: PASS - independent recompute beta: PASS