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

plugins/winter/demo/components/todo/default.htm

@@ -0,0 +1,22 @@
+<form
+    role="form"
+    data-request="{{ __SELF__ }}::onAddItem"
+    data-request-update="'{{ __SELF__ }}::list': '#result'"
+    data-request-success="$('#input-item').val('')"
+    data-request-flash>
+    <div class="panel panel-default">
+        <div class="panel-heading">
+            <h3 class="panel-title">To Do List</h3>
+        </div>
+        <div class="panel-body">
+            <div class="input-group">
+                <input type="text" id="input-item" class="form-control" value="" name="newItem" placeholder="What needs to be done?">
+                <span class="input-group-btn">
+                    <button type="submit" class="btn btn btn-primary" data-attach-loading>Add</button>
+                </span>
+            </div>
+        </div>
+        <ul class="list-group" id="result">
+        </ul>
+    </div>
+</form>

plugins/winter/demo/components/todo/list.htm

@@ -0,0 +1,12 @@
+{% for item in items %}
+    <li class="list-group-item">
+        <input type="hidden" name="items[]" value="{{ item }}" />
+        
+        {{ item }}
+
+        <button type="button" 
+            class="close pull-right" 
+            aria-hidden="true" 
+            onclick="$(this).closest('li').remove()">&times;</button>
+    </li>
+{% endfor %}