1[2 {"id":"C1","text":"The provided file covers 2010-01-04 to 2019-12-31 and contains zero post_cut = 1 rows.","results_keys":["sample_start","sample_end","n_treated","n_input_rows"],"status":"supported","caveat":"Direct audit of the file as provided."},3 {"id":"C2","text":"The effect of the March-2020 cuts on the 5-year yield change cannot be estimated from these data; conclusion is premise_invalid.","results_keys":["effect_estimate","effect_ci_low","effect_ci_high","conclusion","feasibility","feasibility_reason"],"status":"supported","caveat":"Infeasibility is due to data coverage, not evidence about the policy effect."},4 {"id":"C3","text":"The mean one-day change in the 5-year yield over 2010-2019 was about -0.04 bp.","results_keys":["baseline_metric"],"status":"supported","caveat":"Descriptive only; no inference attached."}5]6