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/backend/classes/SideMenuItem.php

@@ -0,0 +1,123 @@
+<?php namespace Backend\Classes;
+
+/**
+ * Class SideMenuItem
+ *
+ * @package Backend\Classes
+ */
+class SideMenuItem
+{
+    /**
+     * @var string
+     */
+    public $code;
+
+    /**
+     * @var string
+     */
+    public $owner;
+
+    /**
+     * @var string
+     */
+    public $label;
+
+    /**
+     * @var null|string
+     */
+    public $icon;
+
+    /**
+     * @var null|string
+     */
+    public $iconSvg;
+
+    /**
+     * @var string
+     */
+    public $url;
+
+    /**
+     * @var null|int|callable
+     */
+    public $counter;
+
+    /**
+     * @var null|string
+     */
+    public $counterLabel;
+
+    /**
+     * @var null|string
+     */
+     public $badge;
+
+    /**
+     * @var int
+     */
+    public $order = -1;
+
+    /**
+     * @var array
+     */
+    public $attributes = [];
+
+    /**
+     * @var array
+     */
+    public $permissions = [];
+
+    /**
+     * @param null|string|int $attribute
+     * @param null|string|array $value
+     */
+    public function addAttribute($attribute, $value)
+    {
+        $this->attributes[$attribute] = $value;
+    }
+
+    public function removeAttribute($attribute)
+    {
+        unset($this->attributes[$attribute]);
+    }
+
+    /**
+     * @param string $permission
+     * @param array $definition
+     */
+    public function addPermission(string $permission, array $definition)
+    {
+        $this->permissions[$permission] = $definition;
+    }
+
+    /**
+     * @param string $permission
+     * @return void
+     */
+    public function removePermission(string $permission)
+    {
+        unset($this->permissions[$permission]);
+    }
+
+    /**
+     * @param array $data
+     * @return static
+     */
+    public static function createFromArray(array $data)
+    {
+        $instance = new static();
+        $instance->code = $data['code'];
+        $instance->owner = $data['owner'];
+        $instance->label = $data['label'];
+        $instance->url = $data['url'];
+        $instance->icon = $data['icon'] ?? null;
+        $instance->iconSvg = $data['iconSvg'] ?? null;
+        $instance->counter = $data['counter'] ?? null;
+        $instance->counterLabel = $data['counterLabel'] ?? null;
+        $instance->attributes = $data['attributes'] ?? $instance->attributes;
+        $instance->badge = $data['badge'] ?? null;
+        $instance->permissions = $data['permissions'] ?? $instance->permissions;
+        $instance->order = (!empty($data['order']) || @$data['order'] === 0) ? (int) $data['order'] : $instance->order;
+        return $instance;
+    }
+}