/**
 * SQLite Client for Standalone Mode
 * Manages SQLite connection with WAL mode and sqlite-vec extension
 *
 * NOTE: SQLite standalone mode uses manual DDL for full control over:
 * - Virtual tables (sqlite-vec)
 * - Index definitions
 *
 * The createTables() function below is the single source of truth for SQLite schema.
 * Schema changes require fresh database (delete .db file) or manual migration.
 */
import Database from "better-sqlite3";
export interface SQLiteClientConfig {
    path: string;
    vectorType: "sqlite-vec" | "memory" | "pgvector";
    embeddingDimensions?: number;
}
/**
 * Initialize SQLite client with WAL mode and optional sqlite-vec
 */
export declare function initSQLite(config: SQLiteClientConfig): Database.Database;
/**
 * Get existing SQLite instance (must call initSQLite first)
 */
export declare function getSQLite(): Database.Database;
/**
 * Close SQLite connection
 */
export declare function closeSQLite(): void;
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