import type { ExecutionPlan } from "../execution/execution_types.js";
export declare class ExecutionStore {
    private readonly projectRoot;
    constructor(projectRoot: string);
    private filePath;
    private withLock;
    /** 保存 ExecutionPlan(覆盖:同 plan_id 更新为最新)。 */
    save(plan: ExecutionPlan): Promise<ExecutionPlan>;
    get(planId: string): Promise<ExecutionPlan | null>;
    list(): Promise<ExecutionPlan[]>;
}