/**
 * Score grade boundaries and classification.
 *
 * The single source of truth for the 80 / 70 / 50 threshold boundaries.
 * Both the eval pipeline (scoring) and studio dashboard (display) must
 * agree on these boundaries — a change here updates both.
 */
/** Score grade boundaries — the single source of truth. */
export declare const GRADE_BOUNDARIES: {
    readonly good: 80;
    readonly warning: 70;
    readonly critical: 50;
};
/** Score grade classification */
export type ScoreGrade = "critical" | "good" | "needs-work" | "warning";
/** Classify a numeric score into a grade. */
export declare function scoreGrade(score: number): ScoreGrade;
