| # Metric validity | |
| Metrics are evaluated per scenario and category. Current-belief and authority | |
| metrics use five scenario rows per category. Historical metrics use only rows | |
| with an expected historical answer. Promotion, erasure, temporal, and | |
| evidence-family metrics return `not_applicable` when their applicability | |
| denominator is zero; they do not award a perfect score for an empty strategy. | |
| Rates are never inferred from prose. Privacy leakage counts a violation only | |
| when a record is promoted outside its permitted scope. Abstention is evaluated | |
| against an explicitly expected ambiguity decision. | |