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/formWidget/FormWidgetStubs.js

@@ -0,0 +1,39 @@
+/*
+ * Stubs for testing winter.form.js in isolation.
+ *
+ * Provides minimal implementations of WinterCMS dependencies that the
+ * form widget relies on at load time.
+ */
+
+// ocJSON - used by paramToObj inside the form widget
+window.ocJSON = function (str) {
+    return JSON.parse(str);
+};
+
+// $(document).render() - used by the form widget to auto-initialize on DOM ready
+jQuery.fn.render = function (fn) {
+    fn();
+};
+
+/*
+ * $.fn.request() - stub that mimics WinterCMS's AJAX framework contract.
+ *
+ * Returns a resolved jQuery Deferred with .done()/.fail()/.always() and a
+ * .success() alias (matching the WinterCMS framework.js Request class).
+ * The deferred resolves immediately since there is no real network I/O.
+ */
+jQuery.fn.request = function (handler, options) {
+    var deferred = jQuery.Deferred();
+
+    deferred.success = function (fn) {
+        return deferred.done(fn);
+    };
+
+    deferred.resolve();
+    return deferred;
+};
+
+// $.fn.loadIndicator() - no-op stub
+jQuery.fn.loadIndicator = function () {
+    return this;
+};