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/tests/console/asset/NpmTestTrait.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace System\Tests\Console\Asset;
+
+trait NpmTestTrait
+{
+    protected string $jsonPath;
+    protected string $backupPath;
+
+    /**
+     * Helper to run test logic and handle restoring package.json file after
+     */
+    protected function withPackageJsonRestore(callable $callback): void
+    {
+        copy($this->jsonPath, $this->backupPath);
+        $callback();
+        rename($this->backupPath, $this->jsonPath);
+    }
+}