That does seem to be the way many use it. I'd be very surprised if they didn't have to insert a rule to prevent opus from constantly asking why they didn't just use ncurses. I just asked sonnet for design options for a tui to onteract with llms to perform sw dev tasks. After describing the tui it immediately suggested ratatui and crossterm as the tech stack. I feel like they must have ignored even the advice of their own llm to come up with this solution.

Edit, the sonnet question shouldn't be taken as proof, it knows I'm a rust dev.

They decided on the tech stack for Claude Code over a year and a half ago.