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/database/seeds/DatabaseSeeder.php

@@ -0,0 +1,20 @@
+<?php namespace System\Database\Seeds;
+
+use Seeder;
+use Eloquent;
+
+class DatabaseSeeder extends Seeder
+{
+
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        Eloquent::unguarded(function () {
+            $this->call('System\Database\Seeds\SeedSetupMailLayouts');
+        });
+    }
+}

modules/system/database/seeds/SeedSetupMailLayouts.php

@@ -0,0 +1,12 @@
+<?php namespace System\Database\Seeds;
+
+use Seeder;
+use System\Models\MailLayout;
+
+class SeedSetupMailLayouts extends Seeder
+{
+    public function run()
+    {
+        MailLayout::createLayouts();
+    }
+}