Before calling any skill in this module: if you are about to call a skill with parameters guessed from its name or description, STOP — read this file (or fetch its schema via GET /skills/recommend?includeSchema=true) first. If you already have the parameter definitions from recommend/schema, you may proceed straight to dryRun.

Triggers

• Undoing a whole task or session
• Snapshotting before risky changes
• Planning/previewing batch operations
• Rolling back
• 撤销整个任务或会话、高危改动前快照、规划/预览批量操作、回滚

Workflow Skills

Persistent history and rollback system for AI operations ("Time Machine"). Allows tagging tasks, snapshotting objects before modification, and undoing specific tasks even after Editor restarts.

NEW: Session-level undo - Group all changes from a conversation and undo them together.

Operating Mode