It's a fine post, but two canards in here: First, skilled engineers using LLMs to code also think and discuss and stare off into space before the source code starts getting laid down. In fact: I do a lot, lot more thinking and balancing different designs and getting a macro sense of where I'm going, because that's usually what it takes to get an LLM agent to build something decent. But now that pondering and planning…
Copilot has Ask mode, and GPT-5 Codex has Plan/Chat mode for this specific task. They won't change any files. I've been using Codex for a couple of days and it's very good if you give it plenty of guidance.