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/vendor/prettify/lang-yaml.js

@@ -0,0 +1,2 @@
+var a=null;
+PR.registerLangHandler(PR.createSimpleLexer([["pun",/^[:>?|]+/,a,":|>?"],["dec",/^%(?:YAML|TAG)[^\n\r#]+/,a,"%"],["typ",/^&\S+/,a,"&"],["typ",/^!\S*/,a,"!"],["str",/^"(?:[^"\\]|\\.)*(?:"|$)/,a,'"'],["str",/^'(?:[^']|'')*(?:'|$)/,a,"'"],["com",/^#[^\n\r]*/,a,"#"],["pln",/^\s+/,a," \t\r\n"]],[["dec",/^(?:---|\.\.\.)(?:[\n\r]|$)/],["pun",/^-/],["kwd",/^\w+:[\n\r ]/],["pln",/^\w+/]]),["yaml","yml"]);