I just need shells — no IDE integration whatsoever. I work across several large codebases in Xcode, Android Studio, and Visual Studio, and I don't want anything wired into them; I just want shells running alongside, exactly like git. Forced docked windows here and there don't help. The best thing about Codex and Claude Code is that I can spin up as many shells as I want and work on as many bugs and features as I can handle in parallel.