feat: 添加Vditor编辑器支持并扩展文件上传功能

- 新增Vditor编辑器静态资源文件，包括图片、字体和样式文件
- 在文件上传控制器中添加vditorSave方法，支持Vditor编辑器文件上传
- 在文章创建页面添加编辑器类型选择（富文本/Markdown）
- 更新.gitignore文件，排除Playwright和QA截图目录
- 扩展UploadFiles类以支持Vditor编辑器的文件上传格式

app/admin/controller/Post.php

@@ -8,6 +8,10 @@ use app\model\Nav;
 use app\model\Post as ModelPost;
 use app\model\PostCategory;
 use app\model\PostTag;
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\MarkdownConverter;
 use League\HTMLToMarkdown\HtmlConverter;
 use think\facade\Cache;
 use think\facade\View;
@@ -188,6 +192,10 @@ class Post extends Common
 
         View::assign('post', $model_post);
 
+        if ($model_post->content_type === 'markdown') {
+            return View::fetch('edit_content_markdown');
+        }
+
         return View::fetch();
     }
 
@@ -223,6 +231,9 @@ class Post extends Common
         //
         $post_data = $request->post();
 
+        // 禁止修改 content_type
+        unset($post_data['content_type']);
+
         $model_post = ModelPost::find($id);
 
         $categorys = [];
@@ -274,6 +285,14 @@ class Post extends Common
             }
         }
 
+        // Markdown->HTML 自动转换
+        if ($model_post->getData('content_type') === 'markdown' && isset($post_data['content'])) {
+            $environment = Environment::createCommonMarkEnvironment();
+            $environment->addExtension(new TableExtension());
+            $converter = new MarkdownConverter($environment);
+            $post_data['content_html'] = $converter->convert($post_data['content'])->getContent();
+        }
+
         $model_post->save($post_data);
 
         Cache::delete('sitemap_last_etag');