Static site generator utilities extracted from blu-site, providing
reusable post/tag types, content reading, date sorting, and file I/O.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add registry README with API documentation
- Add initial packages: json, http-client, testing
- Add package index.json for registry server
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>