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Author SHA1 Message Date
tomatocream b5bf689e72 docs: add API references, mapping corrections, and verification script 
- Add yfinance.org and defeatbeta-api.org reference docs
- Fix defeatbeta_mapping.org: deprecated yfinance property names
  (quarterly_financials→quarterly_income_stmt, financials→income_stmt),
  longName vs longBusinessSummary conceptual mismatch, cashflow note typo
- Add Mapping Limitations section with live verification results (AAPL):
  DuckDB 1.4.3 incompatibility, format differences, coverage gaps
- Add docs/test_mapping.py as runnable mapping verification script
- Add offline.py, persistent_cache.py, download_data.py, warmup_cache.py
  for offline/cached defeatbeta usage
- Add aapl_yfinance.py exploration script and quant.py scaffold
- Add .envrc (uv layout) and update pyproject.toml + uv.lock

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-26 15:33:21 +08:00
tomatocream 60fa0c113d chore: initial project scaffold for quant trading learning 
Sets up project structure with yfinance-based OHLCV fetcher for top
100 S&P companies, Jupyter notebook scaffold, and uv-managed deps.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-25 00:58:02 +08:00