feat: add defeatbeta-api integration with comprehensive comparison tools
- Add defeatbeta-api as primary financial data source (replaces yfinance for analysis)
- Add comprehensive Jupyter notebook tutorial (defeatbeta_tutorial.ipynb)
- Add API comparison script (compare_apis.py)
- Add data exploration script (explore_data.py)
- Add basic test script (test_defeatbeta.py)
- Add notebook runner script (run_notebook.sh)
- Add org-mode mapping documentation (docs/defeatbeta_mapping.org)
- Update pyproject.toml with defeatbeta-api dependency
- Add defeatbeta-api as git submodule for reference
DefeatBeta Advantages:
- No rate limits (HuggingFace hosted)
- Historical financial ratios (ROE, ROIC, WACC time series)
- Earnings call transcripts access
- Revenue segmentation by product/geography
- Automated DCF valuation with Excel output
- DuckDB-powered fast queries
Note: .envrc, .jupyter_checkpoints/, __marimo__/, AAPL.xlsx, tearsheet.html
and other generated files intentionally excluded
tomatocream
4e5af95272