/**
 * Simplifies knowledge labels for UI chips by:
 * - extracting filename from URL/path-like values,
 * - removing extension,
 * - removing trailing random ID segment when detected,
 * - truncating to 20 characters with ellipsis.
 *
 * @param label - Raw knowledge label or source value.
 * @returns Display-friendly chip label.
 *
 * @private utility of knowledge/source chip rendering
 */
export declare function simplifyKnowledgeLabel(label: string): string;
/**
 * Heuristic that classifies a short text as human-readable, identifier-like, or unknown.
 *
 * @param text - Candidate value (typically a filename segment).
 * @returns `'HUMAN'`, `'ID'`, or `'UNKNOWN'`.
 *
 * @private utility of knowledge/source chip rendering
 */
export declare function isHumanOrID(text: string): 'HUMAN' | 'ID' | 'UNKNOWN';