- evaluation.factor_correlation_report:多因子共同日期 ∩ 后逐日横截面 Spearman 相关 取均值 → FactorCorrelationReport(冗余剔除前置,v3 §12 Correlation→Redundancy) - ResearchService.run_factor_correlation + POST /api/factor-correlations (universe/factors/period;与其它研究同装配口径) - tests/test_factor_correlation.py:矩阵对角=1/近线性±相关符号/对称/无共同日期补零、 API 冒烟;全量 pytest 通过