- Create BaseRAGExample base class for all RAG examples
- Refactor 4 examples to use unified interface:
- document_rag.py (replaces main_cli_example.py)
- email_rag.py (replaces mail_reader_leann.py)
- browser_rag.py (replaces google_history_reader_leann.py)
- wechat_rag.py (replaces wechat_history_reader_leann.py)
- Maintain 100% parameter compatibility with original files
- Add interactive mode support for all examples
- Unify parameter names (--max-items replaces --max-emails/--max-entries)
- Update README.md with new examples usage
- Add PARAMETER_CONSISTENCY.md documenting all parameter mappings
- Keep main_cli_example.py for backward compatibility with migration notice
All default values, LeannBuilder parameters, and chunking settings
remain identical to ensure full compatibility with existing indexes.
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