import type { FilesystemProvider } from "../infra/filesystem-provider.js";
declare const RECORD_SCHEMA = "synth-draft-integrity-v1";
export type DraftIntegrityRecord = {
    schema: typeof RECORD_SCHEMA;
    draftId: string;
    fingerprint: string;
    previousHash: string;
    createdAt: number;
};
export type DraftIntegrityVerdict = {
    ok: true;
} | {
    ok: false;
    message: string;
};
/** Fingerprint of a serialized draft's decision-relevant content. */
export declare function fingerprintDraft(serializedDraft: Record<string, unknown>): string;
/**
 * Write the immutable integrity record for a freshly created draft.
 * Throws if a record already exists — records are write-once.
 */
export declare function writeDraftIntegrityRecord(draftsDir: string, draftId: string, serializedDraft: Record<string, unknown>, fsProvider?: FilesystemProvider): Promise<DraftIntegrityRecord>;
/**
 * Certify a draft against its integrity record before approval.
 * Fails closed: missing record, content divergence, or a broken
 * chain all produce a prescriptive rejection.
 */
export declare function verifyDraftIntegrity(draftsDir: string, draftId: string, serializedDraft: Record<string, unknown>, fsProvider?: FilesystemProvider): Promise<DraftIntegrityVerdict>;
export {};