import type { Collection } from './types.js';
/**
 * List all collection names (filenames without .md extension).
 */
export declare function listCollections(): Promise<string[]>;
/**
 * Load a collection by name.
 * Returns null if the collection doesn't exist.
 */
export declare function loadCollection(name: string): Promise<Collection | null>;
/**
 * Get a single item from a collection.
 */
export declare function getCollectionItem(collectionName: string, key: string): Promise<string | null>;
/**
 * Count items in a collection.
 */
export declare function countCollectionItems(collectionName: string): Promise<number>;
/**
 * Save a collection. Creates or overwrites the file.
 */
export declare function saveCollection(collection: Collection): Promise<void>;
/**
 * Set a single item in a collection (creates collection if needed).
 */
export declare function setCollectionItem(collectionName: string, key: string, value: string, description?: string): Promise<void>;
/**
 * Remove a single item from a collection.
 * Returns true if the item existed and was removed.
 */
export declare function removeCollectionItem(collectionName: string, key: string): Promise<boolean>;
/**
 * Delete an entire collection file.
 */
export declare function deleteCollection(name: string): Promise<boolean>;
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