export interface VelocityEstimationEnrichment {
    calendarDays: number | null;
    velocityNote: string;
}
/**
 * Enrich an estimation with calendar days using the project's VelocityProfile.
 * Never throws — returns null calendarDays and a generic note on any failure.
 * SPEC-555
 */
export declare function enrichEstimationWithVelocity(projectPath: string, devHours: number): Promise<VelocityEstimationEnrichment>;
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