/**
 * Fulltext-to-attachments adapter utilities
 *
 * Maps fulltext command options and data to the new attachments system.
 * This adapter enables the fulltext command to use attachments backend
 * while maintaining backward-compatible interface.
 */
import type { AttachmentFile, Attachments } from "../../attachments/types.js";
/**
 * The role used for fulltext files in the attachments system
 */
export declare const FULLTEXT_ROLE: "fulltext";
/**
 * Fulltext format type (matching existing FulltextType)
 */
export type FulltextFormat = "pdf" | "markdown";
/**
 * Convert fulltext format to file extension
 */
export declare function formatToExtension(format: FulltextFormat): string;
/**
 * Convert file extension to fulltext format
 * Returns undefined if extension is not a valid fulltext format
 */
export declare function extensionToFormat(ext: string): FulltextFormat | undefined;
/**
 * Get the standard filename for a fulltext file
 * Following the naming convention: fulltext.{ext}
 */
export declare function getFulltextFilename(format: FulltextFormat): string;
/**
 * Find a fulltext file of specific format in attachments
 */
export declare function findFulltextFile(attachments: Attachments | undefined, format: FulltextFormat): AttachmentFile | undefined;
/**
 * Find all fulltext files in attachments
 */
export declare function findFulltextFiles(attachments: Attachments | undefined): AttachmentFile[];
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