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/cms/reportwidgets/activetheme/assets/css/activetheme.css

@@ -0,0 +1,4 @@
+.widget-activetheme .theme-thumbnail {
+    margin-top: -15px;
+    margin-bottom: 15px;
+}

modules/cms/reportwidgets/activetheme/partials/_widget.php

@@ -0,0 +1,48 @@
+<div class="report-widget widget-activetheme">
+    <h3><?= e(trans($this->property('title'))) ?></h3>
+
+    <?php if (!isset($error)): ?>
+        <div class="theme-thumbnail">
+            <img src="<?= $theme->getPreviewImageUrl() ?>" alt="" class="img-responsive" />
+        </div>
+        <ul class="list-inline">
+            <li>
+            <?php if ($canManage): ?>
+                <a href="<?= Backend::url('system/settings/update/winter/cms/maintenance_settings') ?>">
+            <?php endif ?>
+                <?php if ($inMaintenance): ?>
+                    <i class="icon-circle warning"></i>
+                    <span class="text-warning">
+                        <?= e(trans('cms::lang.dashboard.active_theme.maintenance')) ?>
+                    </span>
+                <?php else: ?>
+                    <i class="icon-circle success"></i>
+                    <span class="text-success">
+                        <?= e(trans('cms::lang.dashboard.active_theme.online')) ?>
+                    </span>
+                <?php endif ?>
+            <?php if ($canManage): ?>
+                </a>
+            <?php endif ?>
+            </li>
+        <?php if ($canManage): ?>
+            <li>
+                <a href="<?= Backend::url('cms/themes') ?>">
+                    <?= e(trans('cms::lang.dashboard.active_theme.manage_themes')) ?>
+                </a>
+            </li>
+        <?php endif ?>
+        <?php if ($canConfig && $theme->hasCustomData()): ?>
+            <li>
+                <a href="<?= Backend::url('cms/themeoptions/update/'.$theme->getDirName()) ?>">
+                    <?= e(trans('cms::lang.dashboard.active_theme.customize_theme')) ?>
+                </a>
+            </li>
+        <?php endif ?>
+        </ul>
+    <?php else: ?>
+        <div class="callout callout-warning">
+            <div class="content"><?= e($error) ?></div>
+        </div>
+    <?php endif ?>
+</div>