/**
 * Database maintenance commands
 *
 * Commands:
 * - lex db vacuum: Optimize database
 * - lex db backup [--rotate N]: Create timestamped backup with rotation
 * - lex db encrypt: Encrypt existing database with SQLCipher
 */
export interface DbVacuumOptions {
    json?: boolean;
}
export interface DbBackupOptions {
    rotate?: number;
    json?: boolean;
}
export interface DbEncryptOptions {
    input?: string;
    output?: string;
    verify?: boolean;
    json?: boolean;
    /**
     * Create a timestamped backup of the input database before encryption.
     * Defaults to true for safety. Use --no-backup to disable.
     */
    backup?: boolean;
    /**
     * Number of rows to insert per batch/transaction. Reduces memory usage
     * for large migrations. Defaults to processing all rows in one transaction.
     */
    batchSize?: number;
    /**
     * Dry-run mode: estimate migration time and row counts without writing.
     */
    dryRun?: boolean;
    /**
     * Show progress indicator during migration.
     */
    progress?: boolean;
}
export interface DbStatsOptions {
    json?: boolean;
    detailed?: boolean;
}
/**
 * Vacuum (optimize) the database
 */
export declare function dbVacuum(options?: DbVacuumOptions): Promise<void>;
/**
 * Backup the database with optional rotation
 */
export declare function dbBackup(options?: DbBackupOptions): Promise<void>;
/**
 * Encrypt an existing database with SQLCipher
 *
 * Migrates an unencrypted database to an encrypted one, with data integrity verification.
 *
 * Security features:
 * - Creates a timestamped backup before encryption (unless --no-backup)
 * - Uses atomic file creation via temp+rename pattern to prevent TOCTOU race conditions
 *
 * Performance features:
 * - Optional batch size for memory-efficient large migrations (--batch-size N)
 * - Progress indicator showing rows processed and ETA (--progress)
 * - Dry-run mode to estimate migration without writing (--dry-run)
 */
export declare function dbEncrypt(options?: DbEncryptOptions): Promise<void>;
/**
 * Receipt CLI command options
 */
export interface ReceiptCreateOptions {
    action: string;
    rationale: string;
    confidence: "high" | "medium" | "low" | "uncertain";
    reversibility: "reversible" | "partially-reversible" | "irreversible";
    outcome?: "success" | "failure" | "partial" | "deferred";
    rollbackPath?: string;
    output?: string;
    json?: boolean;
}
export interface ReceiptValidateOptions {
    input: string;
    json?: boolean;
}
/**
 * Create a receipt and optionally save to file
 */
export declare function receiptCreate(options: ReceiptCreateOptions): Promise<void>;
/**
 * Validate a receipt from file
 */
export declare function receiptValidate(options: ReceiptValidateOptions): Promise<void>;
/**
 * Show database statistics
 */
export declare function dbStats(options?: DbStatsOptions): Promise<void>;