The five-level subagent depth cap did not bind for foreground spawns until 2.1.181

What this changes for operators

• 2.1.181 fixed foreground subagents spawning unbounded nested chains; they now respect the same 5-level depth limit as background subagents. An operator who relied on last window's depth cap (2.1.178) for foreground delegation was, in the interim, not protected by it.
• Upgrade past 2.1.181 and re-test that a foreground delegation tree actually stops at five levels rather than assuming the announced cap binds.