- Updated `calculate_sl_tp` method to handle invalid entry prices and sides, returning (None, None) when necessary.
- Improved logging for SL/TP values in `LiveTradingBot` to display "N/A" for invalid values.
- Refined order placement in `OKXClient` to ensure guaranteed fill price retrieval, with fallback mechanisms for fetching order details and ticker prices if needed.
- Added error handling for scenarios where fill prices cannot be determined.
- Added FastAPI backend with core API endpoints for strategies, backtests, and data management.
- Introduced Vue 3 frontend with a dark theme, enabling users to run backtests, adjust parameters, and compare results.
- Implemented Pydantic schemas for request/response validation and SQLAlchemy models for database interactions.
- Enhanced project structure with dedicated modules for services, routers, and components.
- Updated dependencies in `pyproject.toml` and `frontend/package.json` to include FastAPI, SQLAlchemy, and Vue-related packages.
- Improved `.gitignore` to exclude unnecessary files and directories.
