- Renamed sections to match Python reference style (6 section name fixes)
- observability.md: replaced full Search Attributes content with ref to data-handling.md
- gotchas.md: removed extra subsection already covered in php.md
- versioning.md: expanded Worker Versioning to match Python verbosity
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>