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/assets/vendor/ace/mode-plain_text.js

@@ -0,0 +1,25 @@
+ace.define("ace/mode/plain_text",["require","exports","module","ace/lib/oop","ace/mode/text","ace/mode/text_highlight_rules","ace/mode/behaviour"], function(require, exports, module) {
+"use strict";
+
+var oop = require("../lib/oop");
+var TextMode = require("./text").Mode;
+var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;
+var Behaviour = require("./behaviour").Behaviour;
+
+var Mode = function() {
+    this.HighlightRules = TextHighlightRules;
+    this.$behaviour = new Behaviour();
+};
+
+oop.inherits(Mode, TextMode);
+
+(function() {
+    this.type = "text";
+    this.getNextLineIndent = function(state, line, tab) {
+        return '';
+    };
+    this.$id = "ace/mode/plain_text";
+}).call(Mode.prototype);
+
+exports.Mode = Mode;
+});