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/models/pluginversion/columns_manage.yaml

@@ -0,0 +1,27 @@
+# ===================================
+#  Column Definitions
+# ===================================
+
+columns:
+
+    code:
+        label: system::lang.updates.plugin_code
+        sortable: false
+        type: partial
+        path: column_code
+
+    version:
+        label: system::lang.updates.plugin_version
+        sortable: false
+
+    is_unfrozen:
+        label: system::lang.plugins.unfrozen
+        type: partial
+        path: is_unfrozen
+        sortable: false
+
+    is_enabled:
+        label: system::lang.plugins.enabled
+        type: partial
+        path: is_enabled
+        sortable: false