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/models/themelog/fields.yaml

@@ -0,0 +1,36 @@
+# ===================================
+#  Field Definitions
+# ===================================
+
+tabs:
+    fields:
+
+        diff_template:
+            tab: cms::lang.theme_log.diff
+            type: partial
+            path: field_diff_template
+
+        diff_content:
+            tab: cms::lang.theme_log.diff
+            type: partial
+            path: field_diff_content
+
+        template:
+            tab: cms::lang.theme_log.new_value
+            type: partial
+            path: field_template
+
+        content:
+            tab: cms::lang.theme_log.new_value
+            type: partial
+            path: field_content
+
+        old_template:
+            tab: cms::lang.theme_log.old_value
+            type: partial
+            path: field_template
+
+        old_content:
+            tab: cms::lang.theme_log.old_value
+            type: partial
+            path: field_content