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/facades/Backend.php

@@ -0,0 +1,29 @@
+<?php namespace Backend\Facades;
+
+use Winter\Storm\Support\Facade;
+
+/**
+ * @method static string uri()
+ * @method static string url(?string $path = null, array $parameters = [], ?bool $secure = null)
+ * @method static string baseUrl(?string $path = null)
+ * @method static string skinAsset(?string $path = null)
+ * @method static \Illuminate\Http\RedirectResponse redirect(string $path, int $status = 302, array $headers = [], ?bool $secure = null)
+ * @method static \Illuminate\Http\RedirectResponse redirectGuest(string $path, int $status = 302, array $headers = [], ?bool $secure = null)
+ * @method static \Illuminate\Http\RedirectResponse redirectIntended(string $path, int $status = 302, array $headers = [], ?bool $secure = null)
+ * @method static string date($dateTime, array $options = [])
+ * @method static string dateTime($dateTime, array $options = [])
+ *
+ * @see \Backend\Helpers\Backend
+ */
+class Backend extends Facade
+{
+    /**
+     * Get the registered name of the component.
+     *
+     * @return string
+     */
+    protected static function getFacadeAccessor()
+    {
+        return 'backend.helper';
+    }
+}