export declare class OperationConflictError extends Error {
}
/** Only synchronous, same-database effects belong here. No leases or retries are needed under SQLite's write lock. */
export declare function executeAtomicOperation(input: {
    principalId: string;
    capabilityId: string;
    idempotencyKey: string;
    requestDigest: string;
    descriptorDigest: string;
    surface: string;
}, execute: (operationId: string) => unknown): unknown;