export interface TaskScope {
    files?: string[];
    directories?: string[];
    acceptanceCriteria?: string[];
    outOfScope?: string[];
}
export interface Task {
    id: string;
    title: string;
    description: string;
    directory: string;
    priority: "critical" | "high" | "medium" | "low";
    status: "backlog" | "ready" | "review" | "in_progress" | "done" | "blocked" | "expired";
    scope?: TaskScope;
    requiresReview?: boolean;
    timeLimitMs?: number;
    dispatchedAt?: number;
    context?: string;
    dependsOn?: string;
    sessionID?: string;
    agent?: string;
    createdAt: number;
    updatedAt: number;
    completedAt?: number;
    parentID?: string;
    subtasks?: string[];
    tags?: string[];
}
export interface Backlog {
    tasks: Task[];
    paused: boolean;
    lastPlanAt?: number;
    version: number;
}
export declare function loadBacklog(filePath: string): Backlog;
export declare function saveBacklog(filePath: string, backlog: Backlog): void;
export declare function genID(): string;
export declare function getNextTask(backlog: Backlog): Task | undefined;
export declare function getActiveTasks(backlog: Backlog): Task[];
export declare function promoteNext(filePath: string, parentID: string): boolean;
export declare function expireStale(filePath: string, maxAgeMs: number): number;