import type { ResetCreditAccountStatus, ResetCreditRedeemOutcome } from "./auth-storage.js";
/** An account's last recorded attempt: `pending` (sent, unconfirmed) or `reset`, and when it started. */
export interface ResetMarker {
    state: string;
    atMs: number;
}
/** Records `pending` around one consume, then `reset`, or clears the marker when nothing was spent. */
export type MarkedRedeem = (redeem: () => Promise<ResetCreditRedeemOutcome>) => Promise<{
    outcome: ResetCreditRedeemOutcome;
    attemptedAt: number;
}>;
/** Lock file for one `resetAccountLockKey`, beside the agent database unless `root` replaces it. */
export declare function resetLockPath(lockKey: string, root?: string): string;
export declare function readResetMarker(lockPath: string): Promise<ResetMarker>;
/**
 * Hold the account's lock, then run `onRecent` when another attempt started
 * within `ATTEMPT_COOLDOWN_MS`, or `spend` otherwise. Both run under the lock.
 */
export declare function withResetFence<T>(lockPath: string, onRecent: (marker: ResetMarker) => Promise<T>, spend: (redeem: MarkedRedeem) => Promise<T>): Promise<T>;
/**
 * Codex's live balance for one credential, re-read under the fence. `spent`
 * means it fell below the `expected` count the spend was decided on.
 */
export declare function checkCodexBalance(statuses: readonly ResetCreditAccountStatus[], credentialId: number, expected: number | undefined): "spent" | "credit_list_failed" | "no_credit" | undefined;