feat: replace *Service suffix with role-based class names

tests/Logger/ErrorCodeProcessorTest.php

@@ -5,19 +5,19 @@ declare(strict_types=1);
 namespace App\Tests\Logger;
 
 use App\Logger\ErrorCodeProcessor;
-use App\Service\ErrorCodeService;
+use App\Service\ErrorCodeGenerator;
 use Monolog\Level;
 use Monolog\LogRecord;
 use PHPUnit\Framework\TestCase;
 
 class ErrorCodeProcessorTest extends TestCase
 {
-    private ErrorCodeService $errorCodeService;
+    private ErrorCodeGenerator $errorCodeService;
     private ErrorCodeProcessor $processor;
 
     protected function setUp(): void
     {
-        $this->errorCodeService = $this->createMock(ErrorCodeService::class);
+        $this->errorCodeService = $this->createMock(ErrorCodeGenerator::class);
         $this->processor = new ErrorCodeProcessor($this->errorCodeService);
     }