feat: 增强 Knowledge 页面功能

- 优化文档预览功能
- 添加 CSV 文件解析支持
- 增强知识库详情展示
- 优化样式和交互

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/views/Settings.vue

@@ -241,6 +241,7 @@ const showChangePassword = () => {
             description="Configure your model settings"
             icon="fa-solid fa-brain"
             icon-class="bg-gradient-to-br from-primary-orange to-red-500"
+            class="add-model-dialog"
           >
             <div class="space-y-4">
               <div>