Define your project once, generate AGENTS.md + .cursorrules + CLAUDE.md + GEMINI.md

Every AI coding tool invented its own context file: Four prose files. Four places to keep in sync. Update one, forget another. Context rot starts day one. What if there was one source of truth? project.faf is ~35 lines of structured YAML. IANA-registered as application/vnd.faf+yaml. It defines your project once — stack, goals, conventions, architecture — and generates all four formats: npm i -g faf-cli faf bi-sync --all That's it. CLAUDE.md + AGENTS.md + .cursorrules + GEMINI.md from one file. Three layers, three jobs: .faf defines — structured YAML, machine-readable, single source of truth .md files instruct — prose for each tool, generated from .faf AI interprets — each tool reads its native format, no translation needed What shipped in v4.5.0: faf agents import/export/sync — full AGENTS.md interop faf cursor import/export/sync — full .cursorrules interop faf bi-sync --all — every format in one pass 87 new tests caught 3 cross-platform bugs (Windows \r\n, UTF-8 BOM, old Mac \r) befor