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/lang/ar/client.php

@@ -0,0 +1,18 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Client-side Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | These are messages made available to the client browser via JavaScript.
+    | To compile this file run: php artisan winter:util compile lang
+    |
+    */
+
+    'markdowneditor' => [
+        'formatting' => 'التنسيق',
+    ],
+];