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/helpers/View.php

@@ -0,0 +1,50 @@
+<?php namespace System\Helpers;
+
+use View as ViewFacade;
+
+/**
+ * This helper class is used to extract basic variables
+ * (scalar or array) from the global `View` Facade.
+ *
+ * You can register these global variables with `View::share`.
+ *
+ *     View::share('siteName', 'Winter CMS');
+ *
+ * Then available globally for use in the front-end and mail templates.
+ */
+class View
+{
+    /**
+     * @var array Cache for global variables.
+     */
+    protected static $globalVarCache;
+
+    /**
+     * Returns shared view variables, this should be used for simple rendering cycles.
+     * Such as content blocks and mail templates.
+     *
+     * @return array
+     */
+    public static function getGlobalVars()
+    {
+        if (static::$globalVarCache !== null) {
+            return static::$globalVarCache;
+        }
+
+        $vars = array_filter(ViewFacade::getShared(), function ($var) {
+            return is_scalar($var) || is_array($var);
+        });
+
+        return static::$globalVarCache = $vars;
+    }
+
+    /**
+     * Clears the static cache for global variables.
+     *
+     * @return void
+     */
+    public static function clearVarCache()
+    {
+        static::$globalVarCache = null;
+    }
+}