The Best Claude Setup (That Works on Any AI Tool)

Here is a confession that might sound odd in a guide about setting up Claude Code: the goal is not to marry Claude Code. The goal is to build a setup so portable that if something better ships next month — OpenAI's Codex, Cursor, Windsurf, whatever wins the week — you could pack up everything you have built and move in an afternoon. Your instructions, your custom tools, your reusable workflows: all of it should come with you. That sounds like a strange thing to optimize for. Most "best setup" po...