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/_execute.php

@@ -0,0 +1,70 @@
+<?php if (!$this->fatalError): ?>
+
+    <div id="executePopup">
+
+        <div id="executeActivity">
+            <div class="modal-body modal-no-header">
+                <div class="progress bar-loading-indicator" id="executeLoadingBar">
+                    <div class="progress-bar"></div>
+                </div>
+
+                <div class="loading-indicator-container">
+                    <p>&nbsp;</p>
+                    <div class="loading-indicator transparent">
+                        <div id="executeMessage"></div>
+                        <span></span>
+                    </div>
+                </div>
+                <p>&nbsp;</p>
+            </div>
+        </div>
+
+        <div id="executeStatus"></div>
+    </div>
+
+    <script type="text/template" id="executeFailed">
+        <div class="modal-body modal-no-header">
+            <div class="callout callout-danger no-icon">
+                <div class="header">
+                    <h3><?= e(trans('system::lang.updates.update_failed_label')) ?></h3>
+                    <p>{{ reason }}</p>
+                </div>
+            </div>
+        </div>
+        <div class="modal-footer">
+            <button
+                type="button"
+                class="btn btn-primary"
+                onclick="$.wn.updateProcess.retryUpdate()">
+                <?= e(trans('system::lang.updates.retry_label')) ?>
+            </button>
+            <button
+                type="button"
+                class="btn btn-default"
+                data-dismiss="popup">
+                <?= e(trans('backend::lang.form.cancel')) ?>
+            </button>
+        </div>
+    </script>
+
+    <script>
+        $('#executePopup').on('popupComplete', function() {
+            $.wn.updateProcess.execute(<?= json_encode($updateSteps) ?>)
+        })
+    </script>
+
+<?php else: ?>
+
+    <div class="modal-body modal-no-header">
+        <p class="flash-message static error"><?= e(trans($this->fatalError)) ?></p>
+    </div>
+    <div class="modal-footer">
+        <button
+            type="button"
+            class="btn btn-default"
+            data-dismiss="popup">
+            <?= e(trans('backend::lang.form.close')) ?>
+        </button>
+    </div>
+
+<?php endif ?>