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

• Reviewing or navigating undo history
• Stepping undo/redo
• Auditing what changed
• 查看或浏览撤销历史、逐步撤销/重做、审查改动

History Skills

Manage Unity Editor undo/redo history.

Operating Mode

本模块 history_get_current（纯读）标 SkillMode.SemiAuto，三档下均可直接执行；history_undo / history_redo 会改变场景状态，为默认 SkillMode.FullAuto（Operation=Execute），Approval 模式下需 grant。不含 NeverInSemi 高危 skill。

history_undo / history_redo replay Unity's own native Undo/Redo stack, whose contents cannot be classified by write category the way workflow module's task snapshots can, so unlike workflow_undo_task / workflow_session_undo they carry no payload-level SURFACE_EXCLUDED check.