- Create PortfolioConfig dataclass with validation - Add PortfolioRepository for file-based persistence - Update settings page with live LTV calculations - Add real-time calculated displays (LTV, margin buffer, margin call price)
- Create PortfolioConfig dataclass with validation - Add PortfolioRepository for file-based persistence - Update settings page with live LTV calculations - Add real-time calculated displays (LTV, margin buffer, margin call price)