/**
 * Narrative quality lint — detects filler language, out-of-period dates, and
 * low-density log entries in generated narratives.
 */
export declare function findFillerPhrase(text: string): string | null;
export declare function findDateViolation(text: string, periodStart: string, periodEnd: string): string | null;
export declare function findLowDensityLines(text: string): {
    count: number;
    total: number;
    examples: string[];
};
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