/**
 * Durable Mission Store — atomic JSON persistence for a MissionRuntime document.
 *
 * Write-temp-then-rename so a process exit never leaves a partially written
 * document. This is a small, provider-independent store used by the Reliability
 * Kernel and its tests; the live agent session embeds the serialized document
 * into session state for session-associated durability.
 */
import type { MissionRuntimeDocumentV1 } from "./mission-runtime.js";
export declare class MissionFileStore {
    private readonly root;
    constructor(root: string);
    private resolve;
    initialize(): Promise<void>;
    save(document: MissionRuntimeDocumentV1): Promise<void>;
    load(missionId: string): Promise<MissionRuntimeDocumentV1 | undefined>;
    exists(missionId: string): boolean;
}
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