import { type GenerationPlan } from "./generation-plan.js";
import { type GenerationDownloadInput } from "./generation-download.js";
import { GenerationStore, type GenerationVerification } from "./generation-store.js";
import { type PersistedOperationObserver } from "../persisted-operation-observer.js";
export interface GenerationInstallOperation {
    schemaVersion: 1;
    id: string;
    planDigest: string;
    phase: "queued" | "downloading" | "verifying" | "verified" | "failed" | "interrupted";
    candidateId?: string;
    createdAt: string;
    finishedAt?: string;
    error?: "ARTIFACT_INPUT_FAILED" | "CANDIDATE_ALLOCATION_FAILED" | "DOWNLOAD_FAILED" | "VERIFICATION_FAILED" | "INSTALL_FAILED" | "INTERRUPTED";
}
export interface GenerationInstallerOptions {
    operationsDirectory: string;
    store: GenerationStore;
    verify(directory: string, plan: GenerationPlan, options: {
        signal?: AbortSignal;
        privateRoot: string;
    }): Promise<GenerationVerification>;
    /** 仅受信宿主配置可覆盖执行器，HTTP 请求不得指定可执行文件或验证器。 */
    download?: (input: GenerationDownloadInput) => Promise<void>;
    pnpmExecutable?: string;
    pnpmScript?: string;
    onOperation?: PersistedOperationObserver;
}
/**
 * 在独占工作区内持久化并串行执行安装；验证成功也不改变活动版本。
 * 重复请求复用同一操作。冷启动发现中断时保留候选供恢复诊断，不自动重试或清理。
 */
export declare class GenerationInstaller {
    private readonly options;
    private readonly directory;
    private readonly running;
    private tail;
    private closed;
    constructor(options: GenerationInstallerOptions);
    status(id: string): GenerationInstallOperation;
    install(id: string, input: GenerationPlan, options?: {
        token?: string;
        signal?: AbortSignal;
    }): Promise<GenerationInstallOperation>;
    /** 正常关闭等待所有已接受操作完成；上层可先取消其 AbortSignal。 */
    close(): Promise<void>;
    private execute;
    private file;
    private save;
    private observe;
}
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