Caliber: open-source community registry for AI agent config files (CLAUDE.md, .cursor/rules, GEMINI.md)

AI coding tools like Claude Code, Cursor, and Gemini CLI have created a new category of infrastructure: agent configuration files. Developers write CLAUDE.md,.cursor/rules, GEMINI.md, and system prompts to define agent behavior - how the AI thinks about the codebase, communicates, and makes decisions. But these configs are siloed. Everyone writes them in isolation. There's no community layer. We built Caliber to solve this: an open-source community registry for AI agent config files.