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/js/fixtures/framework/TestSingletonWithDependency.js

@@ -0,0 +1,29 @@
+/* globals window */
+
+((Snowboard) => {
+    class TestSingletonWithDependency extends Snowboard.Singleton {
+        dependencies() {
+            return ['testDependencyOne'];
+        }
+
+        listens() {
+            return {
+                ready: 'ready',
+            };
+        }
+
+        ready() {
+            return 'Ready';
+        }
+
+        testMethod() {
+            return 'Tested';
+        }
+
+        dependencyTest() {
+            return this.snowboard.testDependencyOne().testMethod();
+        }
+    }
+
+    Snowboard.addPlugin('testSingleton', TestSingletonWithDependency);
+})(window.Snowboard);