优化模版样式

src/components/editor/ArticleList.tsx

@@ -65,7 +65,7 @@ export function ArticleList({ onSelect, currentContent, onNew }: ArticleListProp
       id: Date.now().toString(),
       title,
       content: currentContent,
-      template: 'creative', // 默认模板
+      template: 'default', // 默认模板
       createdAt: Date.now(),
       updatedAt: Date.now()
     }
@@ -107,7 +107,7 @@ export function ArticleList({ onSelect, currentContent, onNew }: ArticleListProp
       id: Date.now().toString(),
       title: '新文章',
       content: '# 新文章\n\n开始写作...',
-      template: 'creative',
+      template: 'default',
       createdAt: Date.now(),
       updatedAt: Date.now()
     }

src/components/editor/WechatEditor.tsx

@@ -23,7 +23,7 @@ export default function WechatEditor() {
   const textareaRef = useRef<HTMLTextAreaElement>(null)
   const previewRef = useRef<HTMLDivElement>(null)
   const [value, setValue] = useState('')
-  const [selectedTemplate, setSelectedTemplate] = useState<string>('creative')
+  const [selectedTemplate, setSelectedTemplate] = useState<string>('default')
   const [showPreview, setShowPreview] = useState(true)
   const [styleOptions, setStyleOptions] = useState<RendererOptions>({})
   const [previewSize, setPreviewSize] = useState<PreviewSize>('medium')