- Add boto3 direct download for S3/MinIO stored images
- Implement 6-level file fallback: DB → S3 → Local → URL → API → Attributes
- Sync S3 support to Chinese version (export_to_word_cn.py)
- Update version to 0.4.2
- Rewrite README.md and README_CN.md following standard format
- Update docs version numbers
- Add file storage access guidelines to copilot-instructions.md