Opencode too. These tools are already so programmable and embeddable, it's just Claude Code is a sticking point. But maybe it would be useful to provide a unified CLI and Daemon for all of them.
They have ACP servers but they might apply different rate limits or policies if they notice ACP use, while a solution like yours would not trigger that unless it becomes popular enough to specifically detect. It also seems this provides more features them just an ACP server.