Port skills, command packs, and CLAUDE.md between Claude ↔ Codex ↔ Cursor ↔ Gemini.
Cursor deprecated the `.cursorrules` file in favor of `.cursor/rules/` in late 2024. The old format still works, but it doesn't support scoping, per-session…
A migration sprint broke on day one because half the team had `.claude` assets and the other half had `.codex` assets. We were copying by hand and introducin…