import { IndexData, IndexEntry } from "./types.js";
/**
 * Load the memory index from .index.yaml.
 * Returns an empty IndexData if the file doesn't exist or is invalid.
 */
export declare function loadIndex(wsRoot: string): Promise<IndexData>;
/**
 * Save the memory index to .index.yaml.
 */
export declare function saveIndex(wsRoot: string, data: IndexData): Promise<void>;
/**
 * Update or insert a single entry in the index.
 */
export declare function updateIndex(wsRoot: string, uri: string, entry: IndexEntry): Promise<void>;
/**
 * Remove an entry from the index.
 */
export declare function removeFromIndex(wsRoot: string, uri: string): Promise<void>;
/**
 * Rebuild the entire index by scanning all MD files in memory-bank/.
 * For existing files without frontmatter, it auto-generates metadata
 * and writes updated frontmatter back with the 'updated' timestamp.
 */
export declare function rebuildIndex(wsRoot: string): Promise<IndexData>;