import type { LockState } from '../../../core/task-parser.js';
export declare function getOwnerIdentity(): string;
export declare function readLock(project: string): LockState | null;
export declare function writeLock(project: string, lock: LockState | null): void;
export declare function acquireLock(project: string, opts: {
    owner: string;
    force?: boolean;
    note?: string;
}): {
    acquired: boolean;
    lock?: LockState;
    message?: string;
};
export declare function releaseLock(project: string, owner: string, opts?: {
    force?: boolean;
}): {
    released: boolean;
    message?: string;
};
export declare function assertLockHeld(project: string, owner: string): string | null;
export declare function isProjectLocked(project: string, now?: string): {
    locked: boolean;
    owner?: string;
    expiresAt?: string;
};