Created rdagent/scenarios/qlib/local/data_loader.py:
- OHLCV loading with thread-safe caching
- Factor metadata loading (sorted by IC)
- Factor time-series loading with alignment
- Feature matrix builder
- Randomized factor selection for diverse strategies
- 11 tests passing
Note: data_loader.py is in local/ (closed source)
Test file is public to validate interface.
TPTBusiness