import type { WorkflowRun } from "./types.js";
/**
 * Persists WorkflowRun state to <runDir>/run-state.json.
 * Enables run recovery across process restarts.
 */
export declare class RunStateStore {
    private baseDir;
    constructor(baseDir: string);
    /** Persist a run's state to disk */
    save(run: WorkflowRun): Promise<void>;
    /** Load a single run's state from disk */
    load(runId: string): Promise<WorkflowRun | null>;
    /** List all persisted run IDs */
    listRuns(): Promise<string[]>;
}