I am thinking the opposite. I've been having great results with handing more and more responsibilities to the agent.

Contrary to what some people suggest, I have not hit any maintenance or reliability dead ends. If something breaks, the agent fixes it.

If it cannot, I have the agent instrument the code and work through the logs to check hypotheses, until the source of the issue is found.

If even that would fail, which did not yet happen, I can still do some old fashioned digging and learning, like I always have.

This is for native mobile app development, and the code base is around 100k LOC.