/**
 * SQLite PRAGMA tuning — applied at every database connection open.
 *
 * WAL mode is the highest-impact change: enables concurrent reads while
 * writes are in progress (critical for multi-session + cron writes).
 *
 * Inspired by ZeroClaw's PRAGMA tuning and confirmed by PicoClaw v0.1.2
 * which fixed a concurrency/persistence bug with this exact approach.
 */
type DatabaseLike = {
    exec(sql: string): void;
};
/**
 * Apply performance and safety PRAGMAs to a SQLite database connection.
 * Safe to call on any connection — idempotent.
 */
export declare function applySqlitePragmas(db: DatabaseLike): void;
export {};
