export interface RunCompletionInput {
    startedAt: string;
    requestedFinishedAt?: string;
    requestedDurationMs?: number;
    serverNow: Date;
}
export interface NormalizedRunCompletion {
    finishedAt: string;
    durationMs: number | undefined;
    updatedAt: string;
}
/**
 * Treat the control-plane clock as authoritative while retaining a bounded
 * runner timestamp as evidence. In the normal case, where startedAt is not
 * ahead of the server clock, finishedAt is clamped into [startedAt, serverNow].
 * A backwards server-clock jump fails safe at serverNow and yields duration 0.
 */
export declare function normalizeRunCompletion(input: RunCompletionInput): NormalizedRunCompletion;