基本完成描述列表组件；

app/command/ScanDemo.php

@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\command;
+
+use app\model\Category;
+use app\model\Post;
+use think\console\Command;
+use think\console\Input;
+use think\console\input\Argument;
+use think\console\input\Option;
+use think\console\Output;
+use think\facade\App;
+use think\facade\Config;
+
+class ScanDemo extends Command
+{
+    protected function configure()
+    {
+        // 指令配置
+        $this->setName('scan:demo')
+            ->setDescription('the scan:demo command');
+    }
+
+    protected function execute(Input $input, Output $output)
+    {
+        // 指令输出
+        $output->writeln('scan:demo');
+
+
+        $model_category = Category::where('title', '组件')->find();
+
+        $demo_pc_dir = App::getRootPath() . '/demo/pc';
+        
+        $list_demo_file = scandir($demo_pc_dir);
+
+        foreach ($list_demo_file as  $file_name) {
+            $file_name = str_replace(['.html', '.', '..',], '', $file_name);
+
+            if (empty($file_name)) {
+                continue;
+            }
+
+            $model_post = Post::where('tpl_name', $file_name)->find();
+            if (empty($model_post)) {
+                $output->writeln('新组件：' . $file_name);
+                $model_post = new Post();
+                $model_post->type = 'default';
+                $model_post->tpl_name = $file_name;
+                $model_post->title = Config::get("demo.{$file_name}.title", $file_name);
+                $model_post->desc = Config::get("demo.{$file_name}.desc", $file_name);
+                $model_post->category_id = $model_category['id'];
+                $model_post->save();
+            }
+        }
+    }
+}