Refactor code for improved readability and consistency; add flash message handling and enhance quiz functionality

src/Service/EliminationService.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Repository\CandidateRepository;
+
+/**
+ * @phpstan-import-type ResultArray from CandidateRepository
+ */
+class EliminationService
+{
+    /** @phpstan-param ResultArray $result */
+    public function createEliminationFromResult(array $result): void {}
+}