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]>

.ddev/config.yaml

@@ -4,7 +4,13 @@ docroot: public
 php_version: "8.5"
 webserver_type: apache-fpm
 xdebug_enabled: false
-additional_hostnames: []
+additional_hostnames:
+    - sbw-ep13
+    - snowzone-ep13
+    - snowbreak-ep13
+    - ser-ep13
+    - alvac-ep13
+    - cllt-ep13
 additional_fqdns: []
 database:
     type: mariadb
@@ -14,6 +20,7 @@ composer_version: "2"
 web_environment:
     - TYPO3_CONTEXT=Development
 nodejs_version: "24"
+timezone: Europe/Berlin
 corepack_enable: false
 
 # Key features of DDEV's config.yaml:
@@ -292,7 +299,13 @@ corepack_enable: false
 # or
 # web_environment: []
 # or
-# additional_hostnames: []
+# additional_hostnames:
+    - sbw-ep13
+    - snowzone-ep13
+    - snowbreak-ep13
+    - ser-ep13
+    - alvac-ep13
+    - cllt-ep13
 # can have their intended effect. 'override_config' affects only behavior of the
 # config.*.yaml file it exists in.