fix buff unlock

core/goals/goal_data.gd

@@ -41,3 +41,19 @@ func get_first_requirement_summary() -> String:
 	if valid_requirements.is_empty():
 		return ""
 	return String(valid_requirements[0].get_summary_text())
+
+func get_progress() -> float:
+	var valid_requirements: Array[GoalRequirementData] = get_valid_requirements()
+	if valid_requirements.is_empty():
+		return 0.0
+	
+	var min_progress: float = 1.0
+	for requirement in valid_requirements:
+		if requirement == null or not requirement.is_valid():
+			continue
+		
+		var requirement_progress: float = requirement.get_progress()
+		if requirement_progress < min_progress:
+			min_progress = requirement_progress
+	
+	return min_progress