Product text import from agency XLSX workbooks

VITEC Import module: Products tab is now a searchable/sortable product
overview. "Edit Product" opens an XLSX upload with per-field source
mapping (component + cell), old/new preview and checkbox apply via
DataHandler; the mapping and manual matches are persisted and preselect
the next workbook. Category workbooks are detected and rejected.

- new: ProductXlsxReader (PhpSpreadsheet), ProductTextImportController,
  Products/ProductTexts templates, 4 module routes
- related products: per-pair card text in new side table
  tx_vitec_product_related_text (survives MM rewrites), emitted as
  `cardtext` in the product JSON; missing MM relations added add-only
- card copy read from Body Copy (D) with fallback to CTA/Card Copy (E) -
  the workbooks fill either depending on row type
- product detail page <title> now uses seotitle with title fallback
  (provider made singleton and fed from the JSON renderer)
- per-user recent-search badges; last loaded workbook stored per product
  (tx_vitec_product_workbook), Edit Product reopens on it
- composer: add phpoffice/phpspreadsheet ^5.9
- diagnostics: migrations/check_workbook.php

packages/vitec/Classes/Service/LinkResolver.php

@@ -45,4 +45,26 @@ final class LinkResolver
             return null;
         }
     }
+
+    /**
+     * Resolves a full typolink parameter (t3://page..., t3://file..., an
+     * external URL, mailto:...) to a URL. Same contract as pageUrl():
+     * null means "no link", and a failure never throws.
+     */
+    public static function typolinkUrl(string $parameter): ?string
+    {
+        $parameter = trim($parameter);
+        if ($parameter === '') {
+            return null;
+        }
+
+        try {
+            $cObj = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+            $url = $cObj->typoLink_URL(['parameter' => $parameter]);
+
+            return $url !== '' ? $url : null;
+        } catch (\Throwable $e) {
+            return null;
+        }
+    }
 }