CCI (Commodity Channel Index) requires high, low, and close prices
- Create pipeline.py with CLI argument parsing for running stages - Implement TA-Lib indicator computation with multi-output support - Add candle feature extraction (body_size, wicks, ratios, etc.) - Create custom feature loader with dynamic module import - Wire all feature engineering stages with NaN handling - Tasks completed: 2.2, 2.3, 3.1, 3.2, 3.3, 3.4, 3.5