/**
 * Migration 094: Drop graduated feature flag columns from the settings table.
 *
 * The flags `skills`, `githubImport`, `adoptBranch`, `gitRebaseSync`, and
 * `inventory` have graduated out of feature-flag gating — they are now
 * always enabled. Drop the corresponding columns so the schema reflects
 * the new shape and the mapper does not need to keep reading dead values.
 *
 * Idempotent: only drops a column if it is currently present.
 * Requires SQLite >= 3.35.0 for native DROP COLUMN. better-sqlite3
 * ships a recent SQLite, but the operation is wrapped in try/catch
 * just in case to avoid breaking startup on an older binary.
 */
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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