One AGENTS.md, every tool: how I stopped copy-pasting CLAUDE.md everywhere

Every time I open a new repo, I have to decide which AI coding assistant is going to read it. Claude Code wants CLAUDE.md . Gemini CLI wants GEMINI.md . Cursor and OpenCode read AGENTS.md . GitHub Copilot reads .github/copilot-instructions.md . Junie wants .junie/AGENTS.md . There are seventeen of these tools now, give or take, and they all expect their instruction file at a specific path with a specific name. None of them agree on what that path or name should be. So you end up with four near-i