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

themes/demo/assets/less/theme/boot.less

@@ -0,0 +1,12 @@
+//
+// Boot file
+//
+// Includes non-output LESS files such as mixins and variables
+//
+
+@import "../../vendor/bootstrap/less/variables.less";
+@import "../../vendor/bootstrap/less/mixins.less";
+@import "../../vendor/font-awesome/less/variables.less";
+@import "../../vendor/font-awesome/less/mixins.less";
+@import "mixins.less";
+@import "variables.less";

themes/demo/assets/less/theme/fonts.less

@@ -0,0 +1,59 @@
+//
+// Fonts file
+//
+// Allocated area for font definitions used by this application
+//
+
+@font-face {
+    font-family: 'lato';
+    src: url('../fonts/lato-black-webfont.eot');
+    src: url('../fonts/lato-black-webfont.eot?#iefix') format('embedded-opentype'),
+         url('../fonts/lato-black-webfont.svg#latoblack') format('svg'),
+         url('../fonts/lato-black-webfont.woff') format('woff'),
+         url('../fonts/lato-black-webfont.ttf') format('truetype');
+    font-weight: 700;
+    font-style: normal;
+}
+
+@font-face {
+    font-family: 'lato';
+    src: url('../fonts/lato-italic-webfont.eot');
+    src: url('../fonts/lato-italic-webfont.eot?#iefix') format('embedded-opentype'),
+         url('../fonts/lato-italic-webfont.svg#latoitalic') format('svg'),
+         url('../fonts/lato-italic-webfont.woff') format('woff'),
+         url('../fonts/lato-italic-webfont.ttf') format('truetype');
+    font-weight: 400;
+    font-style: italic;
+}
+
+@font-face {
+    font-family: 'lato';
+    src: url('../fonts/lato-regular-webfont.eot');
+    src: url('../fonts/lato-regular-webfont.eot?#iefix') format('embedded-opentype'),
+         url('../fonts/lato-regular-webfont.svg#latoregular') format('svg'),
+         url('../fonts/lato-regular-webfont.woff') format('woff'),
+         url('../fonts/lato-regular-webfont.ttf') format('truetype');
+    font-weight: 400;
+    font-style: normal;
+}
+
+@font-face {
+    font-family: 'lato';
+    src: url('../fonts/lato-light-webfont.eot');
+    src: url('../fonts/lato-light-webfont.eot?#iefix') format('embedded-opentype'),
+         url('../fonts/lato-light-webfont.svg#latolight') format('svg'),
+         url('../fonts/lato-light-webfont.woff') format('woff'),
+         url('../fonts/lato-light-webfont.ttf') format('truetype');
+    font-weight: 300;
+    font-style: normal;
+}
+
+//
+// Chrome exhibits strange behavior when custom fonts are used
+// on select inputs. This fixes the garbled text.
+//
+@media screen and (-webkit-min-device-pixel-ratio:0) {
+    select {
+        font-family: sans-serif;
+    }
+}

themes/demo/assets/less/theme/mixins.less

@@ -0,0 +1,5 @@
+//
+// Mixins file
+//
+// Space for any custom mixins used by this application
+//

themes/demo/assets/less/theme/variables.less

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+//
+// Variables file
+//
+// Space for any custom variables used by this application
+//
+
+// Icons
+// --------------------------------------------------
+@FontAwesomePath:    "../vendor/font-awesome/font";
+
+// Brands
+// --------------------------------------------------
+@brand-primary: #3097d1;
+@brand-info: #8eb4cb;
+@brand-success: #4eb76e;
+@brand-warning: #cbb956;
+@brand-danger:  #bf5329;
+
+// Typography
+// --------------------------------------------------
+@font-family-sans-serif:  "lato", sans-serif;
+@line-height-base: 1.6;
+@font-size-base: 16px;
+@text-color: #586667;
+@headings-color: #1f3f50;
+@jumbotron-heading-color: @headings-color;
+
+// Spacing
+// --------------------------------------------------
+@spacer: 20px;
+@spacer-y: @spacer;
+@spacer-x: @spacer;
+
+// Navbar
+// --------------------------------------------------
+@navbar-height: 70px;
+@navbar-margin-bottom: 0;
+
+@navbar-inverse-bg: #000;
+@navbar-inverse-link-color: rgba(255,255,255,0.6);
+
+@navbar-inverse-stripe-color-active: #000;
+@navbar-inverse-stripe-color-hover: #e67e22;
+@navbar-default-stripe-color-active: #64ae5b;
+@navbar-default-stripe-color-hover: #93dc8a;
+
+// Callouts
+// --------------------------------------------------
+@callout-padding:               20px;
+@callout-border-radius:         @border-radius-base;
+@callout-border:                @gray-lighter;
+
+@callout-info-bg:               #f4f8fa;
+@callout-info-text:             @state-info-text;
+@callout-info-border:           @state-info-border;
+
+@callout-warning-bg:            #faf8f0;
+@callout-warning-text:          @state-warning-text;
+@callout-warning-border:        @state-warning-border;
+
+@callout-danger-bg:             #fdf7f7;
+@callout-danger-text:           @state-danger-text;
+@callout-danger-border:         @state-danger-border;
+
+@callout-success-bg:            #f9fdf7;
+@callout-success-text:          @state-success-text;
+@callout-success-border:        @state-success-border;