/**
 * Migration 091: Add feature_flag_collaboration column to settings table (spec 093).
 *
 * Adds a boolean (INTEGER 0/1) column for the agent collaboration &
 * supervision feature flag. Defaults to 0 (disabled) so existing
 * installations behave identically until the user opts in.
 */
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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