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/models/editorsetting/default_styles.less

@@ -0,0 +1,77 @@
+/*
+ * Text
+ */
+.wn-text-gray,
+.oc-text-gray {
+    color: #AAA !important;
+}
+.wn-text-bordered,
+.oc-text-bordered {
+    border-top: solid 1px #222;
+    border-bottom: solid 1px #222;
+    padding: 10px 0;
+}
+.wn-text-spaced,
+.oc-text-spaced {
+    letter-spacing: 1px;
+}
+.wn-text-uppercase,
+.oc-text-uppercase {
+    text-transform: uppercase;
+}
+
+/*
+ * Links
+ */
+a.wn-link-strong,
+a.oc-link-strong {
+    font-weight: 700;
+}
+a.wn-link-green,
+a.oc-link-green {
+    color: green;
+}
+
+/*
+ * Table
+ */
+table.wn-dashed-borders td,
+table.wn-dashed-borders th
+table.oc-dashed-borders td,
+table.oc-dashed-borders th {
+    border-style: dashed;
+}
+table.wn-alternate-rows tbody tr:nth-child(2n),
+table.oc-alternate-rows tbody tr:nth-child(2n) {
+    background: #f5f5f5;
+}
+
+/*
+ * Table cell
+ */
+table td.wn-cell-highlighted,
+table th.wn-cell-highlighted,
+table td.oc-cell-highlighted,
+table th.oc-cell-highlighted {
+    border: 1px double red;
+}
+table td.wn-cell-thick-border,
+table th.wn-cell-thick-border,
+table td.oc-cell-thick-border,
+table th.oc-cell-thick-border {
+    border-width: 2px;
+}
+
+/*
+ * Images
+ */
+img.wn-img-rounded,
+img.oc-img-rounded {
+    border-radius: 100%;
+    background-clip: padding-box;
+}
+img.wn-img-bordered,
+img.oc-img-bordered {
+    border: solid 10px #CCC;
+    box-sizing: content-box;
+}