/**
 * Persist inbound uploads to the global media store (`{stateDir}/media/inbound/`).
 */
import type { InboundAttachmentInput, MediaRef } from '../../media/types.js';
export type { InboundAttachmentInput, MediaRef } from '../../media/types.js';
export { isImageInboundAttachment, isVoiceInboundAttachment } from './attachment-classifiers.js';
export { toMediaRef, mediaRefFromUri } from './inbound-types.js';
/** Decode base64 or data-URL payload (composer wire + voice STT). */
export declare function decodeInboundAttachmentBase64(data: string): Buffer;
/**
 * Write attachments with binary `data` to the media store; returns metadata-only refs.
 */
export declare function persistInboundAttachments(attachments: InboundAttachmentInput[] | undefined, opts?: {
    maxBytes?: number;
    resolveUri?: (uri: string, attachment: InboundAttachmentInput) => Promise<{
        buffer: Buffer;
        path: string;
        mimeType: string;
        name: string;
        size: number;
    } | null>;
}): Promise<MediaRef[] | undefined>;
/** Read attachment bytes by media URI (voice STT, tools). */
export declare function readInboundAttachmentBuffer(uri: string): Promise<Buffer>;
export declare function assertMediaUri(uri: string): void;