* docs: add download options for each system version in 3.9.0 release note.
* docs: add download options for each system version in 3.9.0 release note.
- Bump version from 3.9.0-3 to 3.9.0 across all config files
- Add comprehensive release notes in English, Chinese, and Japanese
- Update CHANGELOG with v3.9.0 stable and v3.9.0-2 entries
- Update README badges and release note links to v3.9.0