diff --git a/apps/worker/feature_computation.py b/apps/worker/feature_computation.py
index 299524f..3eced35 100644
--- a/apps/worker/feature_computation.py
+++ b/apps/worker/feature_computation.py
@@ -517,7 +517,7 @@ def build_features_for_pixel(
     Args:
         ts: Dict of index name -> 1D array time series
             Keys: "ndvi", "ndre", "evi", "savi", "ci_re", "ndwi"
-        step_days: Days between observations
+        step_days: Days between observations (for AUC calculation)
             
     Returns:
         Dict with ONLY scalar computed features (no arrays):
@@ -792,6 +792,7 @@ def build_features_v2_for_pixel(
     """
     from scipy.stats import skew, kurtosis
     from scipy.integrate import simpson
+    import pandas as pd
     
     features = {}
     dt_dates = pd.to_datetime(dates, format='%Y%m%d')