fixed the missing dependency in the refiner and changed the test run to using uv

backend/main.py

@@ -0,0 +1,6 @@
+def main():
+    print("Hello from backend!")
+
+
+if __name__ == "__main__":
+    main()

backend/src/optimization/optimization_router.py

@@ -114,9 +114,11 @@ def optimize_trip(
 
     # Second stage optimization
     try :
-        refined_tour = refiner.refine_optimization(landmarks, base_tour,
-                                               preferences.max_time_minute,
-                                               preferences.detour_tolerance_minute)
+        refined_tour = refiner.refine_optimization(
+            landmarks, base_tour,
+            preferences.max_time_minute,
+            preferences.detour_tolerance_minute
+        )
     except Exception as exc :
         logger.warning(f"Refiner failed. Proceeding with base trip {str(exc)}")
         refined_tour = base_tour

backend/src/optimization/refiner.py

@@ -6,7 +6,6 @@ from shapely import buffer, LineString, Point, Polygon, MultiPoint, concave_hull
 
 from ..structs.landmark import Landmark
 from ..utils.get_time_distance import get_time
-from ..utils.take_most_important import take_most_important
 from .optimizer import Optimizer
 from ..constants import OPTIMIZER_PARAMETERS_PATH
 
@@ -238,7 +237,7 @@ class Refiner :
             if self.is_in_area(area, landmark.location) and landmark.name not in visited_names:
                 second_order_landmarks.append(landmark)
 
-        return take_most_important(second_order_landmarks, int(self.max_landmarks_refiner*0.75))
+        return sorted(second_order_landmarks, key=lambda x: x.attractiveness, reverse=True)[:int(self.max_landmarks_refiner*0.75)]
 
 
     # Try fix the shortest path using shapely