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/ui/vendor/pikaday/js/pikaday.jquery.js

@@ -0,0 +1,56 @@
+/*!
+ * Pikaday jQuery plugin.
+ *
+ * Copyright © 2013 David Bushell | BSD & MIT license | https://github.com/Pikaday/Pikaday
+ */
+
+(function (root, factory)
+{
+    'use strict';
+
+    if (typeof exports === 'object') {
+        // CommonJS module
+        factory(require('jquery'), require('pikaday'));
+    } else if (typeof define === 'function' && define.amd) {
+        // AMD. Register as an anonymous module.
+        define(['jquery', 'pikaday'], factory);
+    } else {
+        // Browser globals
+        factory(root.jQuery, root.Pikaday);
+    }
+}(this, function ($, Pikaday)
+{
+    'use strict';
+
+    $.fn.pikaday = function()
+    {
+        var args = arguments;
+
+        if (!args || !args.length) {
+            args = [{ }];
+        }
+
+        return this.each(function()
+        {
+            var self   = $(this),
+                plugin = self.data('pikaday');
+
+            if (!(plugin instanceof Pikaday)) {
+                if (typeof args[0] === 'object') {
+                    var options = $.extend({}, args[0]);
+                    options.field = self[0];
+                    self.data('pikaday', new Pikaday(options));
+                }
+            } else {
+                if (typeof args[0] === 'string' && typeof plugin[args[0]] === 'function') {
+                    plugin[args[0]].apply(plugin, Array.prototype.slice.call(args,1));
+
+                    if (args[0] === 'destroy') {
+                        self.removeData('pikaday');
+                    }
+                }
+            }
+        });
+    };
+
+}));