The three pane options, and the prompts remembering what is open
A matrix for who can do what, checked rather than assumed Two things need the agent to meet Argus halfway — ringing when a turn ends, and saying which folder it considers current — and they are not evenly available. Claude Code does both, Codex rings only, Gemini neither: its settings file holds an auth type and a theme, and its help offers no hook at all. Everything else works the same everywhere, because everything else only needs a terminal.