/**
 * Migration 050: Add skill injection config columns to the settings table.
 *
 * Adds two new columns for configuring skill injection during feature creation:
 *  - skill_injection_enabled (INTEGER DEFAULT 0): whether skill injection is active
 *  - skill_injection_skills (TEXT, nullable): JSON array of SkillSource objects
 *
 * Default value of 0 means skill injection is opt-in (disabled by default).
 * Guards against duplicate column errors using table_info pragma.
 */
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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