import Database from 'better-sqlite3';
declare const AIMONSTERS_DIR: string;
declare const DB_PATH: string;
/**
 * Get or create the singleton database connection.
 * Auto-creates ~/.aimonsters/ and runs migrations.
 */
export declare function getDb(dbPath?: string): Database.Database;
/**
 * Close the database connection. Used in tests and cleanup.
 */
export declare function closeDb(): void;
/**
 * Reset the singleton (for tests that use custom paths).
 */
export declare function resetDbSingleton(): void;
export { DB_PATH, AIMONSTERS_DIR };