chore: create production-v2 branch with content only

This branch contains ONLY:
- Pages (config/www/user/pages/)
- Themes (config/www/user/themes/)
- Plugins (config/www/user/plugins/)
- PRODUCTION.md
- Minimal .gitignore

Clean slate for production deployment.
All development files, configs, scripts removed.

config/www/user/plugins/markdown-notices/markdown-notices.php

@@ -0,0 +1,92 @@
+<?php
+namespace Grav\Plugin;
+
+use Composer\Autoload\ClassLoader;
+use Grav\Common\Plugin;
+use RocketTheme\Toolbox\Event\Event;
+
+class MarkdownNoticesPlugin extends Plugin
+{
+    protected $base_classes;
+    protected $level_classes;
+
+    /**
+     * @return array
+     */
+    public static function getSubscribedEvents()
+    {
+        return [
+            'onPluginsInitialized' => [
+                ['autoload', 100001],
+            ],
+            'onMarkdownInitialized' => ['onMarkdownInitialized', 0],
+            'onTwigSiteVariables'   => ['onTwigSiteVariables', 0]
+        ];
+    }
+
+    /**
+     * [onPluginsInitialized:100000] Composer autoload.
+     *
+     * @return ClassLoader
+     */
+    public function autoload()
+    {
+        return require __DIR__ . '/vendor/autoload.php';
+    }
+
+    public function onMarkdownInitialized(Event $event)
+    {
+        $markdown = $event['markdown'];
+
+        $markdown->addBlockType('!', 'Notices', true, false);
+
+        $markdown->blockNotices = function($Line) {
+
+            $this->level_classes = $this->config->get('plugins.markdown-notices.level_classes');
+            $this->base_classes  = $this->config->get('plugins.markdown-notices.base_classes');
+
+            if (preg_match('/^(!{1,'.count($this->level_classes).'}) (.*)/', $Line['text'], $matches))
+            {
+                $level = strlen($matches[1]) - 1;
+
+                $text = $matches[2];
+                $base_classes = (empty($this->base_classes)) ? '' : str_replace(',', ' ', $this->base_classes) . ' ';
+
+                $Block = [
+                    'element' => [
+                        'name' => 'div',
+                        'handler' => 'lines',
+                        'attributes' => [
+                            'class' => $base_classes . $this->level_classes[$level],
+                        ],
+                        'text' => (array) $text,
+                    ],
+                ];
+
+                return $Block;
+            }
+        };
+
+        $markdown->blockNoticesContinue = function($Line, array $Block) {
+            if (isset($Block['interrupted']))
+            {
+                return;
+            }
+
+            if (preg_match('/^(!{1,'.count($this->level_classes).'}) ?(.*)/', $Line['text'], $matches))
+            {
+                $Block['element']['text'] []= $matches[2];
+
+                return $Block;
+            }
+        };
+    }
+
+    public function onTwigSiteVariables()
+    {
+        if ($this->config->get('plugins.markdown-notices.built_in_css')) {
+            $this->grav['assets']
+                ->add('plugin://markdown-notices/assets/notices.css');
+        }
+    }
+}