policyengine-calibration-diagnostics

Sensitivity registry for PolicyEngine microsim results — maps {program x deviation signature} to the calibration target or imputed variable most likely driving a mismatch, and reads the live per-target diagnostics for the current Populace release. The knowledge base behind the calibration-diagnostics agent and /analyze-policy Stage 5.6. Load when investigating why a microsim result differs from a prior score, or when reviewing whether a reform classification is calibration-sensitive. Triggers: "why does my reform not match", "policyengine cost off", "calibration mismatch", "imputed variable", "takeup rate", "non-filer", "itemizer share", "small state variance", "calibration target", "populace target", "calibration dashboard", "target-diagnostics", "relative_error", "diagnose mismatch", "deviation signature".