/**
 * SQLite storage backend (for development/small deployments)
 *
 * Install: npm install better-sqlite3
 */
import type { StorageBackend, PRRecord, CheckResult, AnalyticsData } from './interface.js';
export declare class SQLiteStorage implements StorageBackend {
    private dbPath;
    private db;
    constructor(dbPath?: string);
    init(): Promise<void>;
    save(record: PRRecord): Promise<void>;
    saveCheck(result: CheckResult): Promise<void>;
    getAnalytics(): Promise<AnalyticsData>;
    get(prId: number): Promise<PRRecord | null>;
    getAll(): Promise<PRRecord[]>;
    search(embedding: Float32Array, limit: number): Promise<Array<{
        prId: number;
        score: number;
    }>>;
    delete(prId: number): Promise<void>;
    close(): Promise<void>;
    private rowToRecord;
    private cosineSimilarity;
}
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