/**
 * untrack-cost-ephemera migration (AC-17, confirm tier): cost ephemera
 * committed before any ignore rule existed get untracked with
 * `git rm --cached` — files stay on disk; the staged deletion is the
 * user's to commit.
 *
 * The printed command is exactly what apply() executes (NFR). Pathspecs
 * include the mistaken `.aidlc/costs/` plural path seen in the wild.
 * unattributed.ndjson is durable ledger data — never listed here.
 */
import type { Migration } from '../types.js';
export declare const EPHEMERA_PATHSPECS: string[];
export declare const untrackCostEphemera: Migration;
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