/**
 * stale-idea-skill migration (roadmap-revamp/AC-47, safe tier): remove the
 * artifacts left behind when `aidlc-idea` was renamed to `aidlc-roadmap`.
 *
 * Renaming a framework skill leaves residue, because the emitters only ever
 * *write* — `FileOp` has `create`, `replace` and `merge-block`, and no delete.
 * So an existing project that updates gets the new skill and keeps the old one,
 * and the old one is a live instruction pointing at a canonical body that no
 * longer exists. An agent reading it follows a dangling path. That is a
 * correctness problem, not untidiness, which is why this ships with the rename
 * rather than after it.
 *
 * Safe tier, but narrowly: a file is deleted only when its content still points
 * at the old canonical path. A user who edited their copy keeps it. Deleting on
 * filename alone would be the destructive version of this migration, and the
 * project has already learned that narrowing the blast radius to what you own is
 * the precondition for repairing automatically.
 */
import type { Migration } from '../types.js';
/**
 * Orphaned artifact paths present and still pointing at the old canonical body.
 *
 * The canonical body itself is matched on its own heading instead, since it does
 * not reference its own path.
 */
export declare function staleIdeaSkillPaths(projectRoot: string): string[];
export declare const staleIdeaSkill: Migration;
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