- Replace MultiFileSaveToDatabase with AttachFilesToRecord finisher
- Use core SaveToDatabase finisher for record creation
- AttachFilesToRecord creates sys_file_reference entries separately
- Update documentation and examples
- Add author information (Maik Preuss)
- New extension icon in TYPO3 style

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>