import type { AttestationData } from '../../types/audit-trail.js';
/**
 * Generate an attestation document for all events of a given spec.
 * Verifies chain integrity and embeds the result in the attestation.
 *
 * @param filePath  Absolute path to the project's audit-log.jsonl.
 * @param projectId Project identifier.
 * @param specId    Spec identifier to filter events for.
 */
export declare function generateAttestation(filePath: string, projectId: string, specId: string): Promise<AttestationData>;
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