VITEC headless: ContentElementResolver, Product fields (videofile, showdatapath)

- New Classes/Service/ContentElementResolver.php: parses TYPO3 typolink
  (t3://record?identifier=tt_content&uid=N, t3://page?uid=P#N, plain numeric)
  to a normalised tt_content envelope ({id,type,colPos,sorting,appearance,
  data}), recursively resolving any nested VITEC list-plugin children.
- ProductListJsonRenderer / ProductShowJsonRenderer: contentelement and
  contentelementcta now emit the resolved object instead of the raw
  typolink string (breaking change at those two keys).
- Product model: new field videofile (FAL, single video upload in tab
  Images and Videos, mp4/webm/ogv/mov/m4v); new bool field showdatapath
  (toggle at end of General tab, controls the "Datapath is now Vitec"
  graphic in the frontend). ext_tables.sql, TCA, model property +
  getter/setter, and both renderers updated accordingly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/vitec/Classes/UserFunc/ProductShowJsonRenderer.php

@@ -169,8 +169,8 @@ class ProductShowJsonRenderer
             'description' => (string)($product['description'] ?? ''),
             'highlights' => (string)($product['highlights'] ?? ''),
             'shortcutpid' => (string)($product['shortcutpid'] ?? ''),
-            'contentelement' => (string)($product['contentelement'] ?? ''),
-            'contentelementcta' => (string)($product['contentelementcta'] ?? ''),
+            'contentelement' => \Evomedien\Vitec\Service\ContentElementResolver::resolveLink((string)($product['contentelement'] ?? '')),
+            'contentelementcta' => \Evomedien\Vitec\Service\ContentElementResolver::resolveLink((string)($product['contentelementcta'] ?? '')),
 
             'hideonapp' => (bool)($product['hideonapp'] ?? false),
             'hideonwebsite' => (bool)($product['hideonwebsite'] ?? false),
@@ -180,6 +180,7 @@ class ProductShowJsonRenderer
             'legacy' => (bool)($product['legacy'] ?? false),
             'supportproduct' => (bool)($product['supportproduct'] ?? false),
             'subproduct' => (bool)($product['subproduct'] ?? false),
+            'showdatapath' => (bool)($product['showdatapath'] ?? false),
 
             'link' => '/product/' . (string)($product['slug'] ?? ''),
 
@@ -187,6 +188,7 @@ class ProductShowJsonRenderer
             'images' => $this->getProductImages($uid),
             'downloads' => $this->getProductDownloads($uid),
             'ogimage' => $this->getProductOgImage($uid),
+            'videofile' => $this->getProductVideoFile($uid),
             'relatedprodukt' => $this->getRelatedProducts($uid),
         ];
     }
@@ -317,6 +319,49 @@ class ProductShowJsonRenderer
         }
     }
 
+
+    /**
+     * Resolve the uploaded video file (single FAL reference, fieldname=videofile).
+     *
+     * @return array<string,mixed>|null
+     */
+    protected function getProductVideoFile(int $productUid): ?array
+    {
+        $queryBuilder = GeneralUtility::makeInstance(\TYPO3\CMS\Core\Database\ConnectionPool::class)
+            ->getQueryBuilderForTable('sys_file_reference');
+
+        $row = $queryBuilder
+            ->select('fr.uid', 'fr.title', 'fr.description', 'f.uid as file_uid', 'f.identifier', 'f.name', 'f.size', 'f.extension', 'f.mime_type')
+            ->from('sys_file_reference', 'fr')
+            ->join('fr', 'sys_file', 'f', 'fr.uid_local = f.uid')
+            ->where(
+                $queryBuilder->expr()->eq('fr.tablenames', $queryBuilder->createNamedParameter('tx_vitec_domain_model_product', \Doctrine\DBAL\ParameterType::STRING)),
+                $queryBuilder->expr()->eq('fr.fieldname', $queryBuilder->createNamedParameter('videofile', \Doctrine\DBAL\ParameterType::STRING)),
+                $queryBuilder->expr()->eq('fr.uid_foreign', $queryBuilder->createNamedParameter($productUid, \Doctrine\DBAL\ParameterType::INTEGER)),
+                $queryBuilder->expr()->eq('fr.deleted', 0),
+                $queryBuilder->expr()->eq('fr.hidden', 0),
+                $queryBuilder->expr()->eq('f.missing', 0)
+            )
+            ->orderBy('fr.sorting_foreign', 'ASC')
+            ->setMaxResults(1)
+            ->executeQuery()
+            ->fetchAssociative();
+
+        if (!$row) {
+            return null;
+        }
+
+        return [
+            'uid' => (int)$row['file_uid'],
+            'name' => (string)($row['name'] ?? ''),
+            'url' => '/fileadmin' . ($row['identifier'] ?? ''),
+            'size' => (int)($row['size'] ?? 0),
+            'extension' => (string)($row['extension'] ?? ''),
+            'mimeType' => (string)($row['mime_type'] ?? ''),
+            'title' => (string)($row['title'] ?? ''),
+            'description' => (string)($row['description'] ?? ''),
+        ];
+    }
     protected function getProductCategories(int $productUid): array
     {
         $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)