export interface GatewayInfo {
    port: number;
    host?: string;
    url?: string;
    secret: string;
    pid: number;
    token?: string;
    ptyPids?: number[];
}
/** Current-main host behavior: runtime PID records are candidates for orphan cleanup. */
export declare function staleGatewayPids(info: Partial<GatewayInfo> | null | undefined, currentPid?: number): number[];
/**
 * Container startup is a separate trust boundary: a persisted PID belongs to a
 * previous container and must never be signaled. Host startup retains the
 * established stale-PID cleanup behavior.
 */
export declare function startupGatewayPids(info: Partial<GatewayInfo> | null | undefined, currentPid?: number, env?: NodeJS.ProcessEnv): number[];
export declare function writeGatewayInfo(file: string, opts: {
    port: number;
    host?: string;
    pid: number;
    secret?: string;
    token?: string;
}): GatewayInfo;
export declare function readGatewayInfo(file: string): GatewayInfo | null;
export declare function gatewayBaseUrl(info: Pick<GatewayInfo, "port" | "host">, fallbackHost?: string): string;
export declare function updateGatewayPtyPids(file: string, ptyPids: number[]): void;
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