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/tests/fixtures/plugins/winter/tester/rules/BeLikeBobRule.php

@@ -0,0 +1,41 @@
+<?php namespace Winter\Tester\Rules;
+
+use Winter\Storm\Validation\Rule;
+
+class BeLikeBobRule extends Rule
+{
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        return $value === 'bob';
+    }
+
+    /**
+     * Validation callback method.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @param  array  $params
+     * @return bool
+     */
+    public function validate($attribute, $value, $params)
+    {
+        return $this->passes($attribute, $value);
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return 'You must be like bob';
+    }
+}