export declare const FROZEN_LOCK_BASENAME = "frozen.lock";
export interface FrozenLockContent {
    frozen_at: string;
    frozen_until: string;
}
export interface FrozenState {
    frozen: boolean;
    expired: boolean;
    frozenAt: string | null;
    frozenUntil: string | null;
    remaining: string | null;
    lockPath: string;
}
export declare function frozenLockPath(vaultPath: string): string;
export declare function readFrozenLock(vaultPath: string, now?: Date): FrozenState;
export declare function nearExpiryWindowHours(): number;
export declare function isNearExpiry(state: FrozenState, now?: Date): boolean;
export declare function enforceNotFrozen(vaultPath: string, vaultName: string, now?: Date): Promise<{
    autoUnfrozen: boolean;
}>;
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