I've tried out a similar project (claude-code.el).

I use Spacemacs in evil-mode and I found it very frustrating to try and type into the Claude Code text box (often my cursor would be somewhere weird, the terminal emulator just really did not seem to "understand" that I was not in Insert Mode). I wound up deciding that I'd rather just use Claude Code in the terminal. The Claude Code text box is ALSO annoying there, so I often just write out instructions in some file (in emacs) and tell then tell CC to read it.

Does this project have any facilities for authoring prompts in a temporary buffer or something?