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/models/mailsetting/_drivers_hint.php

@@ -0,0 +1 @@
+<?= trans('system::lang.mail.drivers_hint_content', ['url'=> 'https://wintercms.com/docs/services/mail#drivers']); ?>

modules/system/models/mailsetting/_send_test_button.php

@@ -0,0 +1,9 @@
+<button
+    type="button"
+    class="btn btn-success"
+    data-request="onTest"
+    data-request-data="redirect:0"
+    data-load-indicator="<?= e(trans('system::lang.mail_templates.sending')) ?>"
+    data-request-confirm="<?= e(trans('system::lang.settings.test_confirm', [ 'email' => e(BackendAuth::getUser()->email)])) ?>">
+    <?= e(trans('system::lang.mail_templates.test_send')) ?>
+</button>

modules/system/models/mailsetting/fields.yaml

@@ -0,0 +1,98 @@
+# ===================================
+#  Field Definitions
+# ===================================
+
+tabs:
+    fields:
+        sender_name:
+            label: system::lang.mail.sender_name
+            span: auto
+            tab: system::lang.mail.general
+
+        sender_email:
+            label: system::lang.mail.sender_email
+            span: auto
+            type: email
+            tab: system::lang.mail.general
+
+        driver_hint:
+            type: hint
+            path: ~/modules/system/models/mailsetting/_drivers_hint.php
+            tab: system::lang.mail.general
+
+        send_mode:
+            label: system::lang.mail.method
+            type: balloon-selector
+            tab: system::lang.mail.general
+
+        smtp_address:
+            label: system::lang.mail.smtp_address
+            tab: system::lang.mail.general
+            span: left
+            trigger:
+                action: show
+                field: send_mode
+                condition: value[smtp]
+
+        smtp_port:
+            label: system::lang.mail.smtp_port
+            type: number
+            tab: system::lang.mail.general
+            span: auto
+            trigger:
+                action: show
+                field: send_mode
+                condition: value[smtp]
+
+        smtp_authorization:
+            type: checkbox
+            label: system::lang.mail.smtp_authorization
+            tab: system::lang.mail.general
+            comment: system::lang.mail.smtp_authorization_comment
+            trigger:
+                action: show
+                field: send_mode
+                condition: value[smtp]
+
+        smtp_user:
+            label: system::lang.mail.smtp_username
+            tab: system::lang.mail.general
+            span: left
+            dependsOn:
+              - send_mode
+              - smtp_authorization
+
+        smtp_password:
+            label: system::lang.mail.smtp_password
+            tab: system::lang.mail.general
+            type: sensitive
+            span: right
+            dependsOn:
+              - send_mode
+              - smtp_authorization
+
+        sendmail_path:
+            label: system::lang.mail.sendmail_path
+            commentAbove: system::lang.mail.sendmail_path_comment
+            tab: system::lang.mail.general
+            trigger:
+                action: show
+                field: send_mode
+                condition: value[sendmail]
+
+        failover_mailers:
+            label: system::lang.mail.failover_mailers
+            placeholder: system::lang.mail.failover_mailers_placeholer
+            type: taglist
+            options: getFailoverMailersOptions
+            customTags: false
+            tab: system::lang.mail.general
+            trigger:
+                action: show
+                field: send_mode
+                condition: value[failover]
+
+        _send_test:
+            type: partial
+            path: ~/modules/system/models/mailsetting/_send_test_button.php
+            tab: system::lang.mail.general