- Add migrate command to transfer posts between websites
- Support CSV-based and filtered migration modes
- Preserve original post dates (with --ignore-original-date option)
- Auto-create categories and tags on destination site
- Add author filtering to export (--author and --author-id flags)
- Include author_name column in exported CSV
- Add comprehensive documentation (MIGRATION_GUIDE.md, AUTHOR_FILTER_GUIDE.md)
Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>
