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/assets/js/snowboard/abstracts/PluginBase.js

@@ -0,0 +1,68 @@
+/**
+ * Plugin base abstract.
+ *
+ * This class provides the base functionality for all plugins.
+ *
+ * @copyright 2021 Winter.
+ * @author Ben Thomson <git@alfreido.com>
+ */
+export default class PluginBase {
+    /**
+     * Constructor.
+     *
+     * The constructor is provided the Snowboard framework instance, and should not be overwritten
+     * unless you absolutely know what you're doing.
+     *
+     * @param {Snowboard} snowboard
+     */
+    constructor(snowboard) {
+        this.snowboard = snowboard;
+    }
+
+    /**
+     * Plugin constructor.
+     *
+     * This method should be treated as the true constructor of a plugin, and can be overwritten.
+     * It will be called straight after construction.
+     */
+    construct() {
+    }
+
+    /**
+     * Defines the required plugins for this specific module to work.
+     *
+     * @returns {string[]} An array of plugins required for this module to work, as strings.
+     */
+    dependencies() {
+        return [];
+    }
+
+    /**
+     * Defines the listener methods for global events.
+     *
+     * @returns {Object}
+     */
+    listens() {
+        return {};
+    }
+
+    /**
+     * Plugin destructor.
+     *
+     * Fired when this plugin is removed. Can be manually called if you have another scenario for
+     * destruction, ie. the element attached to the plugin is removed or changed.
+     */
+    destruct() {
+        this.detach();
+        delete this.snowboard;
+    }
+
+    /**
+     * Plugin destructor (old method name).
+     *
+     * Allows previous usage of the "destructor" method to still work.
+     */
+    destructor() {
+        this.destruct();
+    }
+}

modules/system/assets/js/snowboard/abstracts/Singleton.js

@@ -0,0 +1,15 @@
+import PluginBase from './PluginBase';
+
+/**
+ * Singleton plugin abstract.
+ *
+ * This is a special definition class that the Snowboard framework will use to interpret the current plugin as a
+ * "singleton". This will ensure that only one instance of the plugin class is used across the board.
+ *
+ * Singletons are initialised on the "domReady" event by default.
+ *
+ * @copyright 2021 Winter.
+ * @author Ben Thomson <git@alfreido.com>
+ */
+export default class Singleton extends PluginBase {
+}