refactor: refactor controllers, services, validation and introduce DTOs, FormRequests and domain exceptions

app/Exceptions/ThankCardException.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Exceptions;
+
+use RuntimeException;
+
+class ThankCardException extends RuntimeException
+{
+    // Custom domain exception for thank card operations
+}