All cross-skill links now spell out the repository: skills-public/foo.md, skills-private/bar.md. These resolve from the shared parent directory, so one spelling works from either repo and from code-languages/ subdirectories — replacing the previous mix of ./, ../ and absolute file:// URLs. Link labels normalised to match. Convention added to the README conventions list. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>