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/mailbrandsettings/_field_mail_preview.php

@@ -0,0 +1,11 @@
+<div id="<?= $this->getId('mailPreviewContainer') ?>"></div>
+<script type="text/template" id="<?= $this->getId('mailPreviewTemplate') ?>"><?= $this->renderSampleMessage() ?></script>
+
+<script>
+    $(function(){
+        var previewContents = $('#<?= $this->getId('mailPreviewTemplate') ?>').html()
+            previewFrame = $('#<?= $this->getId('mailPreviewContainer') ?>').get(0)
+
+        createPreviewContainer(previewFrame, previewContents)
+    })
+</script>

modules/system/controllers/mailbrandsettings/config_form.yaml

@@ -0,0 +1,15 @@
+# ===================================
+#  Form Behavior Config
+# ===================================
+
+# Record name
+name: system::lang.mail_brand.menu_label
+
+# Fields are defined by extension
+form: ~/modules/system/models/mailbrandsetting/fields.yaml
+
+# Model Class name
+modelClass: System\Models\MailBrandSetting
+
+# Default redirect location
+defaultRedirect: system/themes

modules/system/controllers/mailbrandsettings/index.php

@@ -0,0 +1,61 @@
+<?php Block::put('breadcrumb') ?>
+    <ul>
+        <li><?= e(trans($this->pageTitle)) ?></li>
+    </ul>
+<?php Block::endPut() ?>
+
+<?php if (!$this->fatalError): ?>
+
+    <?php Block::put('form-contents') ?>
+        <div class="layout">
+
+            <div class="layout-row">
+                <?= $this->formRenderOutsideFields() ?>
+                <?= $this->formRenderPrimaryTabs() ?>
+            </div>
+
+            <div class="form-buttons">
+                <div class="loading-indicator-container">
+                    <button
+                        type="submit"
+                        data-request="onSave"
+                        data-browser-validate
+                        data-request-data="redirect:0"
+                        data-hotkey="ctrl+s, cmd+s"
+                        data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
+                        class="btn btn-primary">
+                        <?= e(trans('backend::lang.form.save')) ?>
+                    </button>
+                    <span class="btn-text">
+                        <?= e(trans('backend::lang.form.or')) ?> <a href="<?= Backend::url('backend/users') ?>"><?= e(trans('backend::lang.form.cancel')) ?></a>
+                    </span>
+                    <button
+                        type="button"
+                        class="btn btn-danger pull-right"
+                        data-request="onResetDefault"
+                        data-load-indicator="<?= e(trans('backend::lang.form.resetting')) ?>"
+                        data-request-confirm="<?= e(trans('backend::lang.form.action_confirm')) ?>">
+                        <?= e(trans('backend::lang.form.reset_default')) ?>
+                    </button>
+                </div>
+            </div>
+
+        </div>
+    <?php Block::endPut() ?>
+
+    <?php Block::put('form-sidebar') ?>
+        <div class="hide-tabs"><?= $this->formRenderSecondaryTabs() ?></div>
+    <?php Block::endPut() ?>
+
+    <?php Block::put('body') ?>
+        <?= Form::open(['id' => 'brandSettingsForm', 'class'=>'layout stretch']) ?>
+            <?= $this->makeLayout('form-with-sidebar') ?>
+        <?= Form::close() ?>
+    <?php Block::endPut() ?>
+
+<?php else: ?>
+
+    <p class="flash-message static error"><?= e(trans($this->fatalError)) ?></p>
+    <p><a href="<?= Backend::url('system/mailtemplates') ?>" class="btn btn-default"><?= e(trans('system::lang.mail_templates.return')) ?></a></p>
+
+<?php endif ?>