feat: boot TYPO3 13 with site configs and the theme build

- Site configs for the seven live sites from EP/website, Development
  base variants on *-ep13.ddev.site (DDEV additional_hostnames)
- Webpack Encore build moved to the root, output in
  packages/ep_theme/Resources/Public, public path /_assets/<hash>
- Search UI removed from the kept layouts and partials, as the static
  export already does
- Daytrip room selection and the contingent chain removed (contingent
  import is not ported; no daytrip product has current contingents)
- f:uri.action is final in v13: Uri\AjaxViewHelper invokes it
- Remaining QueryBuilder::execute() and array logicalAnd() calls,
  addRootLineFields, TSFE getData, legacy typo3conf/ext template path
- Rector skips the plugin-to-CType rules; plugins stay list_type

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/ep_theme/Configuration/Icons.php

@@ -0,0 +1,10 @@
+<?php
+
+use TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider;
+
+return [
+    'content-ep_theme-ce' => [
+        'provider' => SvgIconProvider::class,
+        'source' => 'EXT:ep_theme/Resources/Public/images/logo.svg',
+    ],
+];