[TASK] Fix mkdir and copy warnings in FileGenerator, RoundTrip and BaseFunctionalTest

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: PKuhlmay

Classes/Service/FileGenerator.php

@@ -154,7 +154,9 @@ public function build(Extension $extension): void
 
         $this->generateComposerJson();
 
-        mkdir($this->extensionDirectory . 'Configuration', 0777, true);
+        if (!is_dir($this->extensionDirectory . 'Configuration')) {
+            mkdir($this->extensionDirectory . 'Configuration', 0777, true);
+        }
 
         $this->configurationDirectory = $this->extensionDirectory . 'Configuration/';
 
@@ -316,7 +318,9 @@ protected function generateIconsFile(): void
             return;
         }
         try {
-            mkdir($this->extensionDirectory . 'Configuration', 0777, true);
+            if (!is_dir($this->extensionDirectory . 'Configuration')) {
+                mkdir($this->extensionDirectory . 'Configuration', 0777, true);
+            }
 
             $fileContents = $this->renderTemplate(
                 'Configuration/Icons.phpt',
@@ -857,7 +861,7 @@ protected function generateEmptyGitRepository(): void
             return;
         }
         $sourceDirectory = ExtensionManagementUtility::extPath('extension_builder') . 'Resources/Private/CodeTemplates/Git/';
-        foreach (['objects/info', 'objects/pack', 'refs/heads', 'refs/tags'] as $item) {
+        foreach (['info', 'objects/info', 'objects/pack', 'refs/heads', 'refs/tags'] as $item) {
             $this->mkdir_deep($targetDirectory . '/' . $item, '');
         }
         foreach (['config', 'description', 'HEAD', 'info/exclude'] as $item) {
@@ -1609,7 +1613,7 @@ protected function mkdir_deep(string $directory, string $deepDirectory): void
                 // skip creation
                 return;
             }
-            if (!is_dir($deepDirectory) || ($this->roundTripEnabled && $overWriteMode < 2)) {
+            if (!is_dir($tmpBasePath . $subDirectory)) {
                 mkdir($tmpBasePath . $subDirectory, 0777, true);
             }
             $tmpBasePath .= $subDirectory . '/';

Classes/Service/RoundTrip.php

@@ -1575,7 +1575,9 @@ protected static function log($message, $severity = 0, $data = []): void
     public static function recurse_copy(string $src, string $dst): void
     {
         $dir = opendir($src);
-        mkdir($dst);
+        if (!is_dir($dst)) {
+            mkdir($dst);
+        }
         while (false !== ($file = readdir($dir))) {
             if ($file !== '.' && $file !== '..') {
                 if (is_dir($src . '/' . $file)) {

Tests/BaseFunctionalTest.php

@@ -91,7 +91,7 @@ protected function setUp(): void
         $this->extension->expects(self::any())
             ->method('getExtensionDir')
             ->willReturn($dummyExtensionDir);
-        if (is_dir($dummyExtensionDir)) {
+        if (!is_dir($dummyExtensionDir)) {
             mkdir($dummyExtensionDir);
         }