import type { DocumentIndexEntry } from "./types.js";
/**
 * Build a document index for all supported documents under a directory.
 * Ephemeral — no persistence, rebuilt on every call.
 *
 * @param projectRoot - Trusted project root.
 * @param dirPath - Project-root-relative directory path.
 * @returns Array of document index entries.
 */
export declare function buildDocumentIndex(projectRoot: string, dirPath: string): DocumentIndexEntry[];
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