Data Sources: ├── Alpaca API — equity + options data, paper trading execution ├── Polygon.io — minute-level historical intraday data ├── Capitol Trades — congressional stock trades (free API) ├── ...
backtesting-engine/ ├── data_loader.py # CSV ingestion and validation ├── indicators.py # Technical indicator calculations ├── regime.py # Market regime classification ├── strategy.py # Ensemble ...