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/formwidgets/FieldSet.php

@@ -0,0 +1,102 @@
+<?php
+
+namespace Backend\FormWidgets;
+
+use Backend\Classes\FormField;
+use Backend\Classes\FormWidgetBase;
+use Backend\Widgets\Form;
+
+/**
+ * FieldSet
+ * Renders a fieldset from multiple form fields.
+ *
+ * @package winter\wn-backend-module
+ * @author Marc Jauvin <marc.jauvin@gmail.com>
+ */
+class FieldSet extends FormWidgetBase
+{
+    /**
+     * @inheritDoc
+     */
+    protected $defaultAlias = 'fieldset';
+
+    /**
+     * @var array Field configuration
+     */
+    public $fields;
+
+    /**
+     * @var bool Determines if this form field should display comments and labels.
+     */
+    public $showLabels = false;
+
+    /**
+     * @var Form form widget reference
+     */
+    protected $formWidget;
+
+    /**
+     * @inheritDoc
+     */
+    public function init()
+    {
+        $this->fillFromConfig([
+            'fields',
+        ]);
+
+        if ($this->formField->disabled) {
+            $this->previewMode = true;
+        }
+
+        $config = $this->makeConfig(['fields' => $this->fields]);
+        $config->model = $this->model;
+        $config->data = $this->getLoadValue();
+        $config->alias = $this->alias . $this->defaultAlias;
+        // set arrayName from parent form to save fields to the model
+        $config->arrayName = $this->getParentForm()->arrayName;
+        $config->isNested = true;
+
+        $widget = $this->formWidget = $this->makeWidget(Form::class, $config);
+        $widget->previewMode = $this->previewMode;
+        $widget->bindToController();
+    }
+
+    protected function loadAssets()
+    {
+        $this->addCss('css/fieldset.css', 'core');
+    }
+
+    /**
+     * Returns the save data for the nested fields, to be merged into the parent
+     * form's data as if these fields were defined at that level. Reusing the nested
+     * form's getSaveData() ensures number casting, widget getSaveValue() handling,
+     * NO_SAVE_DATA exclusion and disabled/hidden skipping all behave identically to
+     * a regular field.
+     */
+    public function getSaveData(): array
+    {
+        return $this->formWidget->getSaveData();
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function render()
+    {
+        $this->prepareVars();
+        return $this->makePartial('fieldset');
+    }
+
+    public function prepareVars()
+    {
+        $this->formWidget->previewMode = $this->previewMode;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getSaveValue($value)
+    {
+        return FormField::NO_SAVE_DATA;
+    }
+}