Fixes wrong order

src/Book/Grade/CategoryStrategy.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Book\Grade;
+
+use App\Sorting\SortingStrategyInterface;
+use App\Sorting\TuitionGradeCategoryStrategy;
+
+class CategoryStrategy implements SortingStrategyInterface {
+
+    public function __construct(private readonly TuitionGradeCategoryStrategy $strategy) {
+
+    }
+
+    /**
+     * @param Category $objectA
+     * @param Category $objectB
+     * @return int
+     */
+    public function compare($objectA, $objectB): int {
+        return $this->strategy->compare($objectA->getCategory(), $objectB->getCategory());
+    }
+}

src/Book/Grade/GradeOverviewHelper.php

@@ -29,13 +29,13 @@ public function computeOverviewForStudent(Student $student, Section $section): G
 
         foreach($tuitions as $tuition) {
             $gradeCategories = $tuition->getGradeCategories()->toArray();
-            $this->sorter->sort($gradeCategories, TuitionGradeCategoryStrategy::class);
-
             foreach($gradeCategories as $category) {
                 $categories[$category->getId()] = new Category($tuition, $category);
             }
         }
 
+        $this->sorter->sort($categories, CategoryStrategy::class);
+
         $grades = ArrayUtils::createArrayWithKeys(
             $this->tuitionGradeRepository->findAllByStudent($student, $section),
             fn(TuitionGrade $grade) => sprintf('%s_%s', $grade->getTuition()->getId(), $grade->getCategory()->getId())