rulesync

CLI (MIT, ~1.3k stars, v15.x) that keeps one `.rulesync/` source of truth for agent rules and generates every tool's file from it (CLAUDE.md, .cursor/rules/, .github/copilot-instructions.md, GEMINI.md, and more), plus shared MCP servers, commands and skills. `rulesync import` pulls an existing file into the source; `rulesync generate --targets '*'` emits the rest; `rulesync convert` does one-shot format conversion without adopting the workflow. The honest catch: the generated files are build artifacts, so you edit the source and regenerate rather than hand-editing outputs, and you wire the generate step into a pre-commit hook so nobody forgets. Complements the AGENTS.md symlink pattern for tools that need their own location/format or Windows teams where symlinks are awkward.