> Claude Code was fine in CLI and has a nearly-identical extension pane now too.

One of us is wrong here. Last I checked, the extension pane was a command line, that doesn't use macOS keybindings, reimplements common controls, uses monospaced text for prose, etc.

I don't mind particularly about the last two but 'cmd A' on my Mac highlight all the text in the Claude Code user interface, rather than the text in the text box, is annoying.