fix: mcda Goal value Q=0

Author: rebecamurillo

src/sum_impact_assessment/services/mcda_analysis_job.py

@@ -171,7 +171,7 @@ def build_goals(kpi_impact_results: list, alternatives: list[Alternative], goal_
                 name=group_name,
                 weight=weight,
                 direction="max",  # Higher coefficient = better impact
-                Q=min_value,  # default to min value (disabled effect)
+                Q=0,  # default to min value (disabled effect)
                 S=0,  # default to 0 (not used here)
                 P=max_value - min_value,  # max - min value
                 F='t3'  # V-shape for continuous data

tests/test_services/test_mcda_analysis_job.py

@@ -301,7 +301,7 @@ def test_builds_goals_with_perspective_weights(self):
         assert len(result) == 2
         assert result[0].name == "Sustainability"
         assert result[0].weight == 0.6
-        assert result[0].Q == 0.5  # min value
+        assert result[0].Q == 0  # min value, changed to 0 after MCDA review
         # max - min (0.8 - 0.5), using approximate comparison
         assert abs(result[0].P - 0.3) < 0.001
         assert result[1].name == "Safety"
@@ -384,7 +384,7 @@ def test_goal_attributes_are_correct(self):
         goal = result[0]
         assert goal.name == "Sustainability"
         assert goal.direction == "max"
-        assert goal.Q == 0.2
+        assert goal.Q == 0
         assert goal.S == 0
         assert goal.P == 0.7  # 0.9 - 0.2
         assert goal.F == 't3'