import type { IssueVerificationExecutionLeaseResult } from './verification-execution-lease.js';
export interface GovernanceEventJsonRow {
    task_id: string;
    revision: number;
    event_json: string;
}
export interface GovernanceEvidenceObservationRow {
    sequence: number;
    observation_id: string;
    project_id: string;
    task_id: string | null;
    source: string;
    category: string;
    observation_json: string;
    observation_hash: string;
    observed_at: string;
    recorded_at: string;
}
export interface WorkspaceSnapshotRow {
    snapshot_id: string;
    project_id: string;
    revision: number;
    manifest_hash: string;
    captured_at: string;
}
export type VerificationLeaseIssuanceFailure = Extract<IssueVerificationExecutionLeaseResult, {
    issued: false;
}>;
export declare function deepFreeze<T>(value: T): T;
//# sourceMappingURL=verification-ledger-preconditions-contracts.d.ts.map