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/helpers/Cache.php

@@ -0,0 +1,84 @@
+<?php namespace System\Helpers;
+
+use App;
+use File;
+use Cache as CacheFacade;
+use Config;
+
+class Cache
+{
+    use \Winter\Storm\Support\Traits\Singleton;
+
+    /**
+     * Execute the console command.
+     */
+    public static function clear()
+    {
+        CacheFacade::flush();
+        self::clearInternal();
+    }
+
+    public static function clearInternal()
+    {
+        $instance = self::instance();
+        $instance->clearCombiner();
+        $instance->clearCache();
+
+        if (!Config::get('cms.twigNoCache')) {
+            $instance->clearTwig();
+        }
+
+        $instance->clearMeta();
+    }
+
+    /*
+     * Combiner
+     */
+    public function clearCombiner()
+    {
+        $path = storage_path().'/cms/combiner';
+        if (!is_dir($path)) {
+            return;
+        }
+        foreach (File::directories($path) as $directory) {
+            File::deleteDirectory($directory);
+        }
+    }
+
+    /*
+     * Cache
+     */
+    public function clearCache()
+    {
+        $path = storage_path().'/cms/cache';
+        if (!is_dir($path)) {
+            return;
+        }
+        foreach (File::directories(storage_path().'/cms/cache') as $directory) {
+            File::deleteDirectory($directory);
+        }
+    }
+
+    /*
+     * Twig
+     */
+    public function clearTwig()
+    {
+        $path = storage_path().'/cms/twig';
+        if (!is_dir($path)) {
+            return;
+        }
+        foreach (File::directories(storage_path().'/cms/twig') as $directory) {
+            File::deleteDirectory($directory);
+        }
+    }
+
+    /*
+     * Meta
+     */
+    public function clearMeta()
+    {
+        File::delete(App::getCachedCompilePath());
+        File::delete(App::getCachedServicesPath());
+    }
+}