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/backend/assets/less/controls/global-notice.less

@@ -0,0 +1,25 @@
+.global-notice {
+    position: sticky;
+    top: 0;
+    display: flex;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 0.5em;
+    justify-content: space-between;
+    z-index: 10500;
+    background: #ab2a1c;
+    color: #FFF;
+    padding: 0.5em 0.75em;
+
+    .notice-icon {
+        font-size: 1.5em;
+        vertical-align: bottom;
+        display: inline-block;
+        margin-right: .25em;
+    }
+
+    .notice-text {
+        display: inline-block;
+        vertical-align:middle;
+    }
+}