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/docs/input-monitor.md

@@ -0,0 +1,60 @@
+# Input Monitoring
+
+This will monitor the user input for unsaved changes and show a confirmation box if the user attempts to leave the page. The script adds the "oc-data-changed" class to the form element when the form data is changed.
+
+```html
+<form
+    data-change-monitor
+    data-window-close-confirm="There is unsaved data"
+>
+    ...
+</form>
+```
+
+### Example
+
+Click the "Mark changed" button and "Reload page".
+
+    <form
+        data-window-close-confirm="There is unsaved data"
+        data-change-monitor>
+
+        <button type="button" onclick="$(this).trigger('change')">
+            Mark changed
+        </button>
+
+        <button type="button" onclick="$(this).trigger('unchange.oc.changeMonitor')">
+            Mark saved
+        </button>
+
+        <hr />
+
+        <button type="button" onclick="window.location.reload()">
+            Reload page
+        </button>
+
+    </form>
+
+## Supported data attributes
+
+- data-change-monitor - enables the plugin form a form
+- data-window-close-confirm - confirmation message to show when a browser window is closing and there is unsaved data
+
+## Supported events
+
+- change - marks the form data as "changed". The event can be triggered on any element within a form or on a form itself.
+- unchange.oc.changeMonitor - marks the form data as "unchanged". The event can be triggered on any element within a form or on a form itself.
+- pause.oc.changeMonitor - temporary pauses the change monitoring. The event can be triggered on any element within a form or on a form itself.
+- resume.oc.changeMonitor - resumes the change monitoring. The event can be triggered on any element within a form or on a form itself.
+
+## Triggered events
+
+- changed.oc.changeMonitor - triggered when the form data changes.
+- unchanged.oc.changeMonitor - triggered when the form data unchanges.
+- ready.oc.changeMonitor triggered when the change monitor instance finishes initialization.
+
+## JavaScript API
+
+```js
+$('#form').changeMonitor()
+```