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_button.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * @var \Winter\Storm\Database\Model $formModel
+ * @var \Backend\Classes\FormField $field
+ */
+$action = 'button';
+$handler = null;
+$href = null;
+$target = null;
+
+if (!empty($field->config['href']) || filter_var($field->value, FILTER_VALIDATE_URL)) {
+    $action = 'link';
+    $href = $field->config['href'] ?? '';
+    $target = $field->config['target'] ?? null;
+    if ($formModel->hasAttribute($href)) {
+        $href = $formModel->getAttribute($href);
+    }
+    if (filter_var($field->value, FILTER_VALIDATE_URL)) {
+        $href = $field->value;
+    }
+} elseif (!empty($field->config['handler'])) {
+    $action = 'popup';
+    $handler = $field->config['handler'];
+}
+
+$element = $action === 'link' ? 'a' : 'button';
+$label = $field->config['buttonLabel'] ?? '';
+$buttonType = $field->config['buttonType'] ?? 'default';
+$classes = implode(' ', array_filter([
+    "btn btn-$buttonType",
+    $field->config['buttonCssClass'] ?? ''
+]));
+$request = $field->config['request'] ?? '';
+
+$loadingText = $field->config['loading'] ?? '';
+$icon = $field->config['icon'] ?? '';
+?>
+<div class="loading-indicator-container">
+    <?php if ($field->path): ?>
+        <?= $this->controller->makePartial($field->path, [
+            'formWidget' => $this,
+            'formModel'  => $formModel,
+            'formField'  => $field,
+            'formValue'  => $field->value,
+            'model'      => $formModel,
+            'field'      => $field,
+            'value'      => $field->value,
+            'action'     => $action,
+            'element'    => $element,
+            'label'      => $label,
+            'buttonType' => $buttonType,
+            'classes'    => $classes,
+            'handler'    => $handler,
+            'request'    => $request,
+            'href'       => $href,
+            'target'     => $target,
+            'loading'    => $loadingText,
+            'icon'       => $icon,
+        ]) ?>
+    <?php else: ?>
+        <<?= e($element); ?>
+            class="<?= e($classes); ?>"
+            data-load-indicator<?= !empty($loadingText) ? '="' . e(trans($loadingText)) . '"' : ''; ?>
+            <?= $action === 'popup' ? 'data-control="popup"' : ''; ?>
+            <?= !empty($handler) ? 'data-handler="' . e($handler) . '"' : ''; ?>
+            <?= !empty($request) ? 'data-request="' . e($request) . '"' : ''; ?>
+            <?= !empty($href) ? 'href="' . e($href) . '"' : ''; ?>
+            <?= !empty($target) ? 'target="' . e($target) . '"' : ''; ?>
+        >
+            <?= !empty($icon) ? '<i class="' . e($icon) . '"></i>' : '' ?>
+            <?= e(trans($label)); ?>
+        </<?= e($element); ?>>
+    <?php endif; ?>
+</div>