- Extract commun languages rules in a separate rules/universal.md containing all cross-language rules in one place
- Move language-specific rules inline into each languages/*.md file,
organised into consistent sections: Security / Async / Resource
Management / Exception Handling / Performance / Idioms
- Add Java support: languages/java.md with full section coverage
- Every review now requires exactly 2 file reads: universal.md +
one language file
- Add "Adding a new language" guide to SKILL.md: one file to create,
nothing else changes
