2379159818
- 新增 alpha_lab.py: AlphaLabSession 类(lazy import vnpy.alpha) - 新增 analyzer.py: run_factor_analysis + FactorReport(lazy import alphalens) - 测试: test_alpha_lab.py (2 passed) + test_analyzer.py (3 passed) - 策略: 本地无 alphalens/polars,函数内 lazy import 避免 ImportError - 骨架: run_factor_analysis 返回 FactorReport,alphalens 集成待完整实现