refactor: remove code outside the first-goal scope

Keeps what the product detail pages, the AJAX date/price tables, the
API endpoints (/api/hotel, /api/product, /api/content/*), the chatbot
content-only page type and the MyE&P import need, determined by a class
and template reference closure from those entry points.

Removed: search, watchlist, calendar/contingent AJAX, snow report and
contingent imports, groups swiss, iCal, reseller export, team/EpTeam,
newsletter, CSV feeds, BpnConnect client, backend modules and page
module previews, Tcemain hooks, scheduler tasks, staging and static
search middlewares, forms and their finishers, gridelements and news
templates, and the plugins and content elements not used on product
pages.

The SFTP and local XML import sources are gone; the import reads
MyE&P only (ApiImportSource as ProductImportSource) and runs as
ep:import-dates.

ext_tables.sql stays complete so no table or column is dropped while
the TYPO3 10 project shares the data.

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

packages/ep_theme/Classes/ViewHelpers/PriceRangeViewHelper.php

@@ -1,66 +0,0 @@
-<?php
-
-namespace EP\EpTheme\ViewHelpers;
-
-/***************************************************************
- *
- *  Copyright notice
- *
- *  (c) 2021 Björn Fromme <[email protected]>, dreipunktnull
- *
- *  All rights reserved
- *
- *  This script is part of the TYPO3 project. The TYPO3 project is
- *  free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  The GNU General Public License can be found at
- *  http://www.gnu.org/copyleft/gpl.html.
- *
- *  This script is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  This copyright notice MUST APPEAR in all copies of the script!
- ***************************************************************/
-
-use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
-use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
-use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
-
-class PriceRangeViewHelper extends AbstractViewHelper
-{
-    use CompileWithRenderStatic;
-
-    public function initializeArguments()
-    {
-        parent::initializeArguments();
-
-        $this->registerArgument('min', 'mixed', 'Price range start');
-        $this->registerArgument('max', 'mixed', 'Price range end');
-    }
-
-    /**
-     * @param array $arguments
-     * @param \Closure $renderChildrenClosure
-     * @param RenderingContextInterface $renderingContext
-     * @return mixed
-     */
-    public static function renderStatic(
-        array $arguments,
-        \Closure $renderChildrenClosure,
-        RenderingContextInterface $renderingContext
-    ) {
-        if (1 === (int) $arguments['min']) {
-            return sprintf('bis %d €', $arguments['max']);
-        }
-        if (999 === (int) $arguments['max']) {
-            return sprintf('ab %d €', $arguments['min']);
-        }
-
-        return sprintf('%d bis %d €', $arguments['min'], $arguments['max']);
-    }
-}