import type { MigrationParams } from 'umzug';
import type Database from 'better-sqlite3';
/**
 * Migration 064: Activity log table.
 *
 * This table is append-only per NFR-8 — it intentionally has NO deleted_at
 * column. Activity records are never soft-deleted; they form a permanent
 * audit trail for work item changes.
 */
export declare function up({ context: db }: MigrationParams<Database.Database>): Promise<void>;
export declare function down({ context: db }: MigrationParams<Database.Database>): Promise<void>;
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