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/controllers/MyAccount.php

@@ -0,0 +1,92 @@
+<?php
+
+namespace Backend\Controllers;
+
+use Backend\Behaviors\FormController;
+use Backend\Classes\Controller;
+use Backend\Facades\BackendAuth;
+use Backend\Facades\BackendMenu;
+use System\Classes\SettingsManager;
+use Winter\Storm\Database\Builder;
+
+/**
+ * My Account controller
+ *
+ * Allows any authenticated backend user to manage their own account settings.
+ * Isolated from the Users controller to prevent privilege escalation via
+ * handler dispatch on a controller with degraded permissions.
+ *
+ * @package winter\wn-backend-module
+ * @author Winter CMS
+ */
+class MyAccount extends Controller
+{
+    /**
+     * @var array Extensions implemented by this controller.
+     */
+    public $implement = [
+        FormController::class,
+    ];
+
+    /**
+     * @var array methods that are blocked from being called as actions
+     */
+    protected $guarded = ['create', 'update', 'preview'];
+
+    /**
+     * @var array Permissions required to view this page.
+     *      Empty array — any logged-in user can access their own account.
+     */
+    public $requiredPermissions = [];
+
+    /**
+     * @var string HTML body tag class
+     */
+    public $bodyClass = 'compact-container';
+
+    public $formLayout = 'sidebar';
+
+    /**
+     * Constructor.
+     */
+    public function __construct()
+    {
+        parent::__construct();
+
+        BackendMenu::setContext('Winter.System', 'system', 'users');
+        SettingsManager::setContext('Winter.Backend', 'myaccount');
+    }
+
+    public function formExtendQuery(Builder $query): void
+    {
+        $query->whereKey($this->user->getKey());
+    }
+
+    /**
+     * My Account page
+     */
+    public function index()
+    {
+        $this->pageTitle = 'backend::lang.myaccount.menu_label';
+        return $this->asExtension('FormController')->update($this->user->id, 'myaccount');
+    }
+
+    /**
+     * Save handler for the My Account form
+     */
+    public function index_onSave()
+    {
+        $result = $this->asExtension('FormController')->update_onSave($this->user->id, 'myaccount');
+
+        /*
+         * If the password or login name has been updated, reauthenticate the user
+         */
+        $loginChanged = $this->user->login != post('User[login]');
+        $passwordChanged = strlen(post('User[password]'));
+        if ($loginChanged || $passwordChanged) {
+            BackendAuth::login($this->user->reload(), true);
+        }
+
+        return $result;
+    }
+}