refactor(security): replace generic event with severity enum

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

tests/php/Unit/Event/SecurityEventSeverityTest.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KTXT\Unit\Event;
+
+use KTXC\Security\Event\SecurityEventSeverity;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\TestDox;
+use PHPUnit\Framework\TestCase;
+
+final class SecurityEventSeverityTest extends TestCase
+{
+    #[Test]
+    #[TestDox('Security severity levels expose stable numeric values')]
+    public function exposesStableNumericValues(): void
+    {
+        self::assertSame(0, SecurityEventSeverity::DEBUG->value);
+        self::assertSame(1, SecurityEventSeverity::INFO->value);
+        self::assertSame(2, SecurityEventSeverity::WARNING->value);
+        self::assertSame(3, SecurityEventSeverity::ERROR->value);
+        self::assertSame(4, SecurityEventSeverity::CRITICAL->value);
+    }
+}