/**
 * Graceful Shutdown — 优雅退出处理器
 *
 * 封装服务关闭流程：可靠性资源清理、平台适配器停止、事件监听解除等。
 * 通过依赖注入解耦，方便测试和内嵌模式复用。
 */
export interface GracefulShutdownDependencies {
    reliabilityLifecycle: {
        cleanup: () => Promise<void>;
    };
    feishuClient: {
        stop: () => void;
        off: (event: string, handler: (...args: any[]) => void) => void;
    };
    opencodeClient: {
        disconnect: () => void;
    };
    getCachedAdapter: (platform: string) => {
        stop: () => void;
    } | null;
    clearCache: () => void;
    outputBuffer: {
        clearAll: () => void;
    };
    delayedResponseHandler: {
        cleanupExpired: (ms: number) => void;
    };
    questionHandler: {
        cleanupExpired: (ms: number) => void;
    };
    onFeishuMessage: (...args: any[]) => void;
    onFeishuChatUnavailable: (...args: any[]) => void;
    runningInstanceRef: {
        current: {
            stop: () => Promise<void>;
        } | null;
    };
}
export interface GracefulShutdownResult {
    shutdown: (signal: string) => Promise<void>;
    signalHandlers: {
        sigintHandler: () => void;
        sigtermHandler: () => void;
        sigusr2Handler: () => void;
    };
}
export declare function createGracefulShutdown(deps: GracefulShutdownDependencies): GracefulShutdownResult;
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