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/console/scaffold/migration/migration.create.stub

@@ -0,0 +1,46 @@
+<?php
+
+use Winter\Storm\Database\Schema\Blueprint;
+use Winter\Storm\Database\Updates\Migration;
+use Winter\Storm\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('{{ table }}', function (Blueprint $table) {
+{% if primaryKey %}
+            $table->increments('{{ primaryKey }}');
+{% else %}
+            $table->id();
+{% endif %}
+{% for field,config in fields %}
+            $table->{{ config.type }}('{{ field }}'){{ config.required == false ? '->nullable()' }}{{ config.index ? '->index()' }};
+{% endfor %}
+{% for field in jsonable %}
+            $table->mediumText('{{ field }}')->nullable();
+{% endfor %}
+{% for field in morphable %}
+            $table->nullableMorphs('{{ field }}', 'morphable_index');
+{% endfor %}
+{% if not model or timestamps %}
+            $table->timestamps();
+{% endif %}
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('{{ table }}');
+    }
+};