/**
 * Pure transcript search (V2-057). Scans normalized items for a case-
 * insensitive substring match and exposes match navigation as plain index
 * arithmetic, so the search bar component only needs to hold the query
 * string and current match index.
 */
import { type TranscriptState } from "./transcript-types.js";
export interface TranscriptMatch {
    readonly itemId: string;
    readonly start: number;
    readonly end: number;
}
export declare function findMatches(state: TranscriptState, query: string): TranscriptMatch[];
/** Wraps forward; returns -1 when there are no matches to navigate. */
export declare function nextMatchIndex(matches: readonly TranscriptMatch[], current: number): number;
/** Wraps backward; returns -1 when there are no matches to navigate. */
export declare function prevMatchIndex(matches: readonly TranscriptMatch[], current: number): number;