/**
 * Filename utilities for attachments
 *
 * File format: {role}[-{label-slug}].{ext}
 * Examples:
 *   - fulltext.pdf
 *   - supplement-table-s1.xlsx
 *   - notes-reading-analysis.md
 */
interface ParsedFilename {
    role: string;
    ext: string;
    label?: string;
}
/**
 * Convert a human-readable label to a filesystem-safe slug
 */
export declare function slugifyLabel(label: string): string;
/**
 * Generate filename from role, extension, and optional label
 */
export declare function generateFilename(role: string, ext: string, label?: string): string;
/**
 * Parse filename to extract role, extension, and label
 *
 * Returns null for empty filenames
 */
export declare function parseFilename(filename: string): ParsedFilename | null;
export {};
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