Good read. I think there are plenty of people who are reaching this point of wanting to shake off the novelty aspects of the agent coding experience and make it all a bit more grown-up.

The stuff about context control has always been my itch. The scrollback that most agents show is not what the model is reading. Things get summarised, dropped, cached or never included at all, and the transcript carries on showing the original as though it were still there.

It irked me enough to do my own agent: https://juggler.studio, explicitly to offer hands-on with the real context. The UX is all about making it easy to navigate and visualise every bit of the context, and even let you edit it. While it feels like other harnesses are actively trying to hide it from us..