- VersionService with list, add, remove, getByTag, registerFromConfig - GitHub tag discovery helper for validating tags before indexing - Version ID format: /owner/repo/tag (e.g. /facebook/react/v18.3.0) - GET/POST /api/v1/libs/:id/versions - DELETE /api/v1/libs/:id/versions/:tag - POST /api/v1/libs/:id/versions/:tag/index Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>