feat: VivesPOS landing on Winter CMS 1.2 — theme + plugin + Dockerfile

- Base: wintercms/winter branch 1.2 (full framework)
- Theme vivespos: Canvas 7 + Bootstrap 5 CDN, custom CSS
- Layout: deferred GTM/GA4 tracking, JSON-LD SoftwareApplication
- Partials: hero (offline-first), features, modes (offline/nube toggle),
  screenshots, pricing (3 planes), comparison, FAQ, CTA
- Plugin VivesPOS.Site with ContactForm
- Dockerfile: PHP 8.2 Apache, port 80, healthcheck
- Added winter/wn-pages, blog, sitemap, seo plugins
- Active theme set to vivespos

modules/system/controllers/requestlogs/_referer_field.php

@@ -0,0 +1,11 @@
+<?php if ($formModel->referer && count($formModel->referer) > 0): ?>
+    <div class="form-control control-simplelist with-icons">
+        <ul>
+            <?php foreach ((array) $formModel->referer as $referer): ?>
+                <li class="wn-icon-file-o"><?= e($referer) ?></li>
+            <?php endforeach ?>
+        </ul>
+    </div>
+<?php else: ?>
+    <div class="form-control"><em>There were no detected referers to this URL.</em></div>
+<?php endif ?>