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

• Building cutscenes or sequences
• Creating Timeline assets
• Adding tracks and clips
• 制作过场或序列、创建 Timeline 资产、添加轨道与片段

Timeline Skills

Create and modify Unity Timeline assets — add typed tracks, drop clips on tracks, bind objects, set duration / wrap mode, and play/pause/stop the editor preview through the PlayableDirector.

Operating Mode

• Approval：查询类 skill（timeline_list_tracks，源码标 SkillMode.SemiAuto）直接执行；其余变更/播放类（timeline_create / add_*_track / timeline_add_clip / timeline_set_duration / timeline_play / timeline_set_binding，标 SkillMode.FullAuto）需用户 grant，grant 后服务端一步执行返结果。
• Auto / Bypass：未被禁列表拦截的 skill 直接执行。
• 本模块含 Delete 类 skill：timeline_remove_track 标记为 SkillOperation.Delete，被 IsForbiddenInSemi 静态拦截 —— 仅 Bypass 模式或加入 Allowlist 才能调用。
• timeline_play 仅驱动 Editor 预览（PlayableDirector.Evaluate / Play 在编辑器上下文），不会进入 Play mode。