We think in 1-2 years people will write code at a systems level, not a function level, and it's not clear to us that you can do that with text. Text-based tools like Claude Code work in our text-based-code systems today, but I think describing algorithms to a computer in the future might involve more diagrams, and terminal will not be ideal. That's our reasoning against building a tool in the terminal, but it clearly works well today, and is the simplest way for the labs to train/run terminal tool-use agents.