How do people actually use Claude Code? I love Claude.ai (the web interface); have done *so* much work with it, have given it read-only access tokens for my GitLab repos - but Claude Code is totally unusable! I tried installing the VSCode plugin and can't figure out what to do with it. I installed the Terminal application - and can't even log into it, because I can't paste the authentication token (or anything else, for that matter).