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/twig/SpacelessNode.php

@@ -0,0 +1,38 @@
+<?php namespace System\Twig;
+
+use Twig\Compiler;
+use Twig\Node\Node;
+use Twig\Node\NodeOutputInterface;
+
+/**
+ * Represents a spaceless node.
+ *
+ * It removes spaces between HTML tags.
+ *
+ * Removed in Twig 3.0, but retained in Winter CMS for compatibility.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class SpacelessNode extends Node implements NodeOutputInterface
+{
+    public function __construct(Node $body, int $lineno, string $tag = 'spaceless')
+    {
+        parent::__construct(['body' => $body], [], $lineno, $tag);
+    }
+
+    public function compile(Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+        ;
+        if ($compiler->getEnvironment()->isDebug()) {
+            $compiler->write("ob_start();\n");
+        } else {
+            $compiler->write("ob_start(function () { return ''; });\n");
+        }
+        $compiler
+            ->subcompile($this->getNode('body'))
+            ->write("echo trim(preg_replace('/>\s+</', '><', ob_get_clean()));\n")
+        ;
+    }
+}