export interface PersistedOperationProjection {
    id: string;
    action: string;
    status: string;
    phase?: string;
    finishedAt?: string;
}
export type PersistedOperationObserver = (operation: PersistedOperationProjection) => void;
/** 可观察性只能读取固定投影；失败不得改变已经持久化的业务结果。 */
export declare function observePersistedOperation(observer: PersistedOperationObserver | undefined, operation: PersistedOperationProjection): void;
export declare function observeNamedPersistedOperation(observer: PersistedOperationObserver | undefined, action: string, operation: Omit<PersistedOperationProjection, "action">): void;
/** 系统服务 journal 的统一固定投影；调用方不能把私有事务正文传给日志。 */
export declare function observeManagerServiceOperation(observer: PersistedOperationObserver | undefined, operation: {
    id: string;
    action: "start" | "stop" | "restart" | "install" | "uninstall" | "upgrade";
    status: string;
    phase: string;
}): void;
/** 旧服务迁移备份只留在私有 journal，控制日志只能看到迁移状态。 */
export declare function observeServiceMigrationOperation(observer: PersistedOperationObserver | undefined, operation: {
    id: string;
    status: string;
    phase: string;
}): void;
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