/**
 * Shared text-matching utilities (used by scoring detection and query
 * competitor exclusion). Pure, no dependencies.
 *
 * Matching is Unicode-aware: names in space-delimited scripts (Latin, Cyrillic,
 * Greek, ...) match on word boundaries; names in scripts without word
 * separators (CJK) match by substring, since a `\b`-style boundary never fires
 * there and would silently miss every mention.
 */
/** Lowercase and strip diacritics so "Café" folds to "cafe". */
export declare function fold(text: string): string;
/**
 * First index of `term` in an already-folded `haystack`, respecting a
 * Unicode-aware word boundary, or -1. `term` is folded internally.
 *
 * A boundary holds at an edge when the character just outside the match and the
 * term's own edge character are not both word characters - so "ace" matches in
 * "Ace Hardware" but not in "space", "C++" matches next to spaces/punctuation,
 * and "acme.com" matches "shop.acme.com" but not "myacme.com". CJK terms skip
 * the boundary check (their scripts have no word separators).
 */
export declare function indexOfTerm(haystack: string, term: string): number;
/** Whether `term` appears in an already-folded `haystack` (boundary-aware). */
export declare function mentionsTerm(haystack: string, term: string): boolean;
/**
 * Extract the first balanced `open`...`close` block from `text`, or null.
 *
 * Depth-tracks nested delimiters and ignores any that appear inside a JSON
 * string literal (respecting `\"` escapes), so trailing prose braces do not
 * corrupt the slice (`lastIndexOf` would). Used to pull a JSON object/array out
 * of chatty LLM output.
 */
export declare function extractBalanced(text: string, open: string, close: string): string | null;