Create data/test.csv

data/test.csv

@@ -0,0 +1,2 @@
+id,case_title,photon_flux_cv_delta,source_pulse_energy_cv_delta,resist_sensitivity_delta_pct,acid_diffusion_length_delta_nm,blur_length_delta_nm,ler_sigma_delta_nm,defect_rate_ppm_delta,coherence_score_delta,drift_score,precursor_flag,dominant_axis,notes,constraints
+SDD-T01,Detect precursor,0.010,0.008,7.0,2,2,0.9,18,-0.20,, , ,"Predict drift_score 0..1, precursor_flag 0/1, dominant_axis","Return JSON: drift_score, precursor_flag, dominant_axis"