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/fixtures/plugins/mix/testc/assets/.gitignore

@@ -0,0 +1 @@
+dist

modules/system/tests/fixtures/plugins/mix/testc/assets/src/app.js

@@ -0,0 +1,8 @@
+/* eslint-disable no-plusplus, no-console */
+(() => {
+    for (let i = 0; i <= 100; i++) {
+        if ([2, 3].every((p) => i % p)) {
+            console.log(i);
+        }
+    }
+})();