Split detail validation contracts

tests/Architecture/DetailValidationActionContractTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace MintyPHP\Tests\Architecture;
+
+use PHPUnit\Framework\TestCase;
+
+final class DetailValidationActionContractTest extends TestCase
+{
+    use ProjectFileAssertionSupport;
+
+    public function testScopedDetailActionsProvideStructuredValidationSummaryErrors(): void
+    {
+        foreach (DetailValidationContractFiles::detailActionFiles() as $file) {
+            $content = $this->readProjectFile($file);
+            $this->assertStringContainsString('$validationSummaryErrors = $errorBag->toArray();', $content, $file);
+        }
+    }
+}