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/widgets/mediamanager/partials/_bottom-toolbar.php

@@ -0,0 +1,30 @@
+<div class="panel no-padding-bottom border-top">
+    <div class="form-buttons">
+        <div class="pull-right">
+            <button
+                type="button"
+                data-command="popup-command"
+                data-popup-command="insert"
+                class="btn btn-primary">
+                <?= e(trans('backend::lang.media.insert')) ?>
+            </button>
+
+            <?php if (!$this->readOnly): ?>
+                <button
+                    type="button"
+                    data-command="popup-command"
+                    data-popup-command="crop-and-insert"
+                    class="btn btn-primary hide">
+                    <?= e(trans('backend::lang.media.crop_and_insert')) ?>
+                </button>
+            <?php endif; ?>
+
+            <button
+                type="button"
+                data-dismiss="popup"
+                class="btn btn-default no-margin-right">
+                <?= e(trans('backend::lang.form.cancel')) ?>
+            </button>
+        </div>
+    </div>
+</div>