VITEC headless v14: 5-bug fix unifies plugin renderers + cleanup

Resolves a cascade of TYPO3 v14 breaking changes that left every VITEC
plugin's JSON output silently empty:

1. `list_type` column dropped — all renderer page-discovery queries now
   filter by `CType = 'vitec_X'`.
2. `#[AsAllowedCallable]` attribute added to every public render() —
   without it v14 throws AllowedCallableException, which headless
   silently filters via its "Oops, an error occurred!" guard.
3. `$GLOBALS['TSFE']->id` is null inside JSON cObj context — page id
   now read from the `frontend.page.information` request attribute
   (TSFE fallback kept for legacy entry points).
4. page.tsconfig wizard items migrated to `CType = vitec_X` directly
   (legacy `CType=list, list_type=...` no longer exists in v14).
5. ContainerChildrenProcessor + ContentElementResolver dispatch the
   PLUGIN_RENDERERS map by CType (primary) with list_type fallback.

Beyond the bug fix this commit also contains:
- Datasheets renderer rewritten to "products with newest datasheet"
  semantics (filtered via Download.hideondatasheets).
- New vitec/card content block — multi-purpose card with backend
  preview and layout/background/aspect/alignment/border/shadow options.
- New vitec_container CType (b13 single-column container, FlexForm
  cssClass propagated into the JSON envelope).
- ContentElementResolver service for contentelement/contentelementcta
  link resolution; ContainerChildrenProcessor for nested plugin
  resolution inside b13 containers.
- Vitecset setup.typoscript: ContentElement import moved to top so
  lib.contentElement is defined before VITEC's tt_content blocks.
- Cleanup: 98 .bak.<timestamp> debugging backups removed; *.bak.* and
  /public/_assets_install/ added to .gitignore.

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

packages/vitec/ext_localconf.php

@@ -1,8 +1,6 @@
 <?php
 defined('TYPO3') || die();
 
-use TYPO3\CMS\Core\Utility\GeneralUtility;
-use TYPO3\CMS\Core\Imaging\IconRegistry;
 use TYPO3\CMS\Extbase\Utility\ExtensionUtility;
 
 // Configure view template paths for the OG Image backend module
@@ -30,11 +28,6 @@ $GLOBALS['TYPO3_CONF_VARS']['SYS']['Objects'][\TYPO3\CMS\Backend\View\BackendLay
 // Register custom VITEC CKEditor RTE preset
 $GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['vitec'] = 'EXT:vitec/Configuration/RTE/Vitec.yaml';
 
-// TSConfig für Seiten laden
-\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
-    "@import 'EXT:aifood/Configuration/page.tsconfig'"
-);
-
 (static function () {
     // Register plugins
     ExtensionUtility::configurePlugin(
@@ -146,52 +139,4 @@ $GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['vitec'] = 'EXT:vitec/Configuratio
         ]
     );      
 
-    // Register icons
-    $iconRegistry = GeneralUtility::makeInstance(IconRegistry::class);
-    $iconRegistry->registerIcon(
-        'vitec-plugin-productlist',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-productlist.svg']
-    );
-    $iconRegistry->registerIcon(
-        'vitec-plugin-productshow',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-productshow.svg']
-    );
-    $iconRegistry->registerIcon(
-        'vitec-plugin-usecaseshow',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-usecaseshow.svg']
-    );
-    $iconRegistry->registerIcon(
-        'vitec-plugin-marketshow',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-marketshow.svg']
-    );
-    $iconRegistry->registerIcon(
-        'vitec-plugin-solutionshow',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-solutionshow.svg']
-    );
-    $iconRegistry->registerIcon(
-        'vitec-plugin-usecaselist',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-usecaselist.svg']
-    );
-    $iconRegistry->registerIcon(
-        'vitec-plugin-downloadcard',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-downloadcard.svg']
-    );
-    $iconRegistry->registerIcon(
-        'vitec-plugin-downloadcardcollection',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-downloadcardcollection.svg']
-    );    
-    $iconRegistry->registerIcon(
-        'vitec-plugin-datasheets',
-        \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
-        ['source' => 'EXT:vitec/Resources/Public/Icons/vitec-plugin-datasheets.svg']
-    );    
-     
 })();