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/controllers/updates/_list_toolbar.php

@@ -0,0 +1,24 @@
+<div data-control="toolbar">
+    <a
+        href="javascript:;"
+        class="btn btn-primary wn-icon-refresh"
+        data-control="popup"
+        data-handler="onLoadUpdates">
+        <?= e(trans('system::lang.updates.check_label')) ?>
+    </a>
+    <a
+        href="<?= Backend::url('system/updates/install') ?>"
+        class="btn btn-success wn-icon-plus">
+        <?= e(trans('system::lang.plugins.install')) ?>
+    </a>
+    <a
+        href="<?= Backend::url('system/updates/install/themes') ?>"
+        class="btn btn-success wn-icon-plus">
+        <?= e(trans('system::lang.themes.install')) ?>
+    </a>
+    <a
+        href="<?= Backend::url('system/updates/manage') ?>"
+        class="btn btn-default wn-icon-puzzle-piece">
+        <?= e(trans('system::lang.plugins.manage')) ?>
+    </a>
+</div>