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/backend/widgets/form/partials/_field_textarea.php

@@ -0,0 +1,12 @@
+<!-- Textarea -->
+<?php if ($this->previewMode): ?>
+    <div class="form-control"><?= nl2br(e($field->value)) ?></div>
+<?php else: ?>
+    <textarea
+        name="<?= $field->getName() ?>"
+        id="<?= $field->getId() ?>"
+        autocomplete="off"
+        class="form-control field-textarea size-<?= $field->size ?>"
+        placeholder="<?= e(trans($field->placeholder)) ?>"
+        <?= $field->getAttributes() ?>><?= e($field->value) ?></textarea>
+<?php endif?>