/**
 * Tool-CLI route (under `/api/tool_cli`) that streams one GenTeam attachment
 * to a gsk-token caller — the same membership-gated lane the web and mobile
 * clients download through. `gsk genteam download` fetches it straight into
 * a local file instead of asking the server for a URL (#61834).
 */
export declare const GENTEAM_ATTACHMENT_ENDPOINT = "/genteam/attachment";
export declare function genteamAttachmentEndpoint(channelId: string, attachmentRef: string): string;
/**
 * File name carried by a Content-Disposition header. The RFC 6266
 * `filename*=UTF-8''<pct-encoded>` form holds the full Unicode name and wins
 * over the ASCII `filename="…"` fallback the server writes beside it. Only a
 * basename ever comes back: the header is server data, not a path the caller
 * chose, so it must not steer the write outside the destination directory.
 */
export declare function fileNameFromContentDisposition(header: string | null | undefined): string | undefined;
/**
 * Destination of `gsk genteam download`: `--local_file`, else the first bare
 * operand, else `./<file name the server reported>`. A destination naming an
 * existing directory receives the server's file name inside it.
 */
export declare function resolveGenteamDownloadDestination(operands: readonly string[], localFile: string | undefined, serverFileName: string | undefined): string;
export interface SavedAttachment {
    local_path: string;
    size_bytes: number;
    sha256: string;
}
/**
 * Stream a response body to `destPath`, hashing it on the way. Nothing is
 * buffered: GenTeam attachments reach GiB scale, and the sha256 lets the
 * caller compare against the value `gsk genteam read` already reports.
 */
export declare function saveBodyToFile(body: NonNullable<Response['body']>, destPath: string): Promise<SavedAttachment>;
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