fixed leakage

models/feature_names.txt

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+angle
+angle_squared
+total_holds
+hand_holds
+foot_holds
+start_holds
+finish_holds
+middle_holds
+is_nomatch
+mean_y
+std_x
+std_y
+range_x
+range_y
+min_y
+max_y
+height_gained
+height_gained_start_finish
+bbox_area
+hold_density
+holds_per_vertical_foot
+left_ratio
+symmetry_score
+upper_ratio
+mean_hand_reach
+max_hand_reach
+std_hand_reach
+hand_spread_x
+hand_spread_y
+min_hand_to_foot
+mean_hand_to_foot
+std_hand_to_foot
+convex_hull_area
+hull_area_to_bbox_ratio
+mean_pairwise_distance
+std_pairwise_distance
+path_length_vertical
+path_efficiency
+mean_y_normalized
+start_height_normalized
+finish_height_normalized
+mean_y_relative_to_start
+spread_x_normalized
+spread_y_normalized
+y_q75
+y_iqr
+complexity_score
+angle_x_holds