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

index.php

@@ -0,0 +1,48 @@
+<?php
+/**
+ * Winter CMS - The PHP platform that gets back to basics.
+ *
+ * @package  Winter
+ * @author   Alexey Bobkov, Samuel Georges
+ */
+
+/*
+|--------------------------------------------------------------------------
+| Register composer
+|--------------------------------------------------------------------------
+|
+| Composer provides a generated class loader for the application.
+|
+*/
+
+require __DIR__.'/bootstrap/autoload.php';
+
+/*
+|--------------------------------------------------------------------------
+| Load framework
+|--------------------------------------------------------------------------
+|
+| This bootstraps the framework and loads up this application.
+|
+*/
+
+$app = require_once __DIR__.'/bootstrap/app.php';
+
+/*
+|--------------------------------------------------------------------------
+| Process request
+|--------------------------------------------------------------------------
+|
+| Execute the request and send the response back to the client.
+|
+*/
+
+$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);
+
+$response = $kernel->handle(
+    $request = Illuminate\Http\Request::capture()
+);
+
+$response->send();
+
+$kernel->terminate($request, $response);