- Updated all Field(ontology=...) to Field(json_schema_extra={'ontology': ...})
- Updated Field(comment=...) to Field(json_schema_extra={'comment': ...})
- Enhanced schema_registry.py to extract comment from json_schema_extra
- Updated documentation in decorators.py, README.md, TECHNICAL.md
- Bumped version to 0.2.2
- All tests pass without deprecation warnings