/**
 * Database migration system
 * Versioned schema updates for a single database
 */
import { SQLiteManager } from "./SQLiteManager.js";
export interface Migration {
    version: number;
    description: string;
    up: string;
    down?: string;
    checksum?: string;
}
export declare const migrations: Migration[];
export declare class MigrationManager {
    private db;
    constructor(db: SQLiteManager);
    /**
     * Get current schema version
     */
    getCurrentVersion(): number;
    /**
     * Get all pending migrations sorted by version ascending
     */
    getPendingMigrations(): Migration[];
    /**
     * Apply a single migration with locking to prevent concurrent execution.
     * Uses BEGIN IMMEDIATE to acquire a write lock before checking/applying.
     */
    applyMigration(migration: Migration): void;
    /**
     * Apply all pending migrations
     */
    applyPendingMigrations(): void;
    /**
     * Rollback to a specific version
     */
    rollbackTo(targetVersion: number): void;
    /**
     * Calculate migration checksum for verification
     */
    private calculateChecksum;
    /**
     * Verify migration integrity
     */
    verifyMigrations(): boolean;
    /**
     * Get migration history
     */
    getHistory(): Array<{
        version: number;
        description: string;
        applied_at: number;
    }>;
}
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