Add Lang

This is a heavy automation for extending codegraph's language support. It walks through the entire pipeline: finding a tree-sitter grammar, health-checking it for ABI corruption issues, wiring it into the type system and extractor maps, writing tests, then benchmarking extraction quality and retrieval value on three real repos it picks automatically. The workflow is surprisingly concrete, right down to which files need edits and how to debug when extraction fails. It even handles edge cases like vendoring custom WASM builds when the off-the-shelf grammar is broken. You run it with `/add-lang lua` and it does everything except the final commit, leaving you a complete implementation to review. Useful if you're maintaining codegraph or a similar tool that needs repeatable language onboarding.

Install to Claude Code

npx -y skills add colbymchenry/codegraph --skill add-lang --agent claude-code