/**
 * Migration 038: Add execution metadata columns to phase_timings table.
 *
 * Extends phase_timings to capture full execution context for each agent
 * graph node: prompt, model, agent type, token usage, and outcome.
 */
import type { MigrationParams } from 'umzug';
import type Database from 'better-sqlite3';
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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