fix: 补充 StandardScaler 导入

src/core/modeling/modeling_batch.py

@@ -10,6 +10,7 @@ warnings.filterwarnings('ignore')
 
 # 机器学习模型导入 - 改为回归模型
 from sklearn.base import BaseEstimator, TransformerMixin
+from sklearn.preprocessing import StandardScaler
 from sklearn.svm import SVR
 from sklearn.ensemble import RandomForestRegressor
 from sklearn.neighbors import KNeighborsRegressor