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/assets/less/settings/settings.less

@@ -0,0 +1,80 @@
+@import "../../../../backend/assets/less/core/boot.less";
+
+.control-settings {
+
+    .settings-category {
+        padding: 20px;
+        background-color: @color-panel-light;
+
+        h3 {
+            margin: 0;
+            font-weight: 100;
+            color: #293e50;
+        }
+    }
+
+    .settings-items {
+        padding: 20px;
+        margin: 0;
+
+        &.row {
+            font-size: 0;
+        }
+
+        &.row > .settings-item {
+            float: none;
+            vertical-align: top;
+            display: inline-block;
+        }
+
+        .settings-item > a {
+            display: block;
+            position: relative;
+            padding-left: 72px;
+            padding-top: 10px;
+            text-decoration: none;
+            margin-bottom: 20px;
+            line-height: 150%;
+            h5 {
+                margin-top: 0;
+                color: @text-color;
+                font-size: 18px;
+                line-height: 150%;
+                .text-overflow();
+            }
+
+            p {
+                color: #777;
+                font-size: 12px;
+                line-height: 150%;
+            }
+
+            .item-icon {
+                position: absolute;
+                left: 0;
+                top: 0;
+                background: #f0f0f0;
+                .border-radius(999px);
+                width: 64px;
+                height: 64px;
+                display: block;
+                text-align: center;
+                color: #555;
+                i {
+                    font-size: 52px;
+                    line-height: 64px;
+                }
+            }
+
+            &:hover {
+                h5 { color: @link-hover-color; }
+                p { color: @link-hover-color; }
+                .item-icon {
+                    background: #e0e0e0;
+                    color: @link-hover-color;
+                }
+            }
+        }
+    }
+
+}