- Extend DailyClosePoint to include low, high, open (optional)
- Update Databento source to extract OHLC data from ohlcv-1d schema
- Update YFinance source to extract Low, High, Open from history
- Modify backtest engine to use worst-case (low) price for margin call detection
This ensures margin calls are evaluated at the day's worst price,
not just the closing price, providing more realistic risk assessment.
- Fix return type annotation for get_default_premium_for_product
- Add type narrowing for Weight|Money union using _as_money helper
- Add isinstance checks before float() calls for object types
- Add type guard for Decimal.exponent comparison
- Use _unit_typed and _currency_typed properties for type narrowing
- Cast option_type to OptionType Literal after validation
- Fix provider type hierarchy in backtesting services
- Add types-requests to dev dependencies
- Remove '|| true' from CI type-check job
All 36 mypy errors resolved across 15 files.
