/**
 * Detect user-added files under GSD-managed install dirs not listed in the manifest.
 *
 * Port of `detect-custom-files` from `get-shit-done/bin/gsd-tools.cjs` (lines 1161–1239).
 */
import type { QueryHandler } from './utils.js';
/**
 * Args: `--config-dir <path>` (required) — runtime config directory to scan.
 */
export declare const detectCustomFiles: QueryHandler;
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