diff --git a/ui-design/designs/preview-modal.drawio b/ui-design/designs/preview-modal.drawio
new file mode 100644
index 0000000..aa64257
--- /dev/null
+++ b/ui-design/designs/preview-modal.drawio
@@ -0,0 +1,30 @@
+<mxfile host="app.diagrams.net" modified="2026-03-10T08:15:00Z" agent="OpenClaw">
+  <diagram name="文件预览弹窗">
+    <mxGraphModel dx="800" dy="600" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="800" pageHeight="600">
+      <root>
+        <mxCell id="0"/>
+        <mxCell id="1" parent="0"/>
+        
+        <!-- 标题栏 -->
+        <mxCell id="header" value="photo.jpg" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#1890ff;strokeColor=#096d9;fontColor=#ffffff" vertex="1" parent="1">
+          <mxGeometry x="100" y="50" width="600" height="40" as="geometry"/>
+        </mxCell>
+        
+        <!-- 关闭按钮 -->
+        <mxCell id="close" value="X" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#ff4d4f;fontColor=#ffffff" vertex="1" parent="1">
+          <mxGeometry x="660" y="50" width="40" height="40" as="geometry"/>
+        </mxCell>
+        
+        <!-- 预览区 -->
+        <mxCell id="preview" value="🖼 [图片预览]" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#d9d9d9" vertex="1" parent="1">
+          <mxGeometry x="100" y="90" width="600" height="400" as="geometry"/>
+        </mxCell>
+        
+        <!-- 底部工具栏 -->
+        <mxCell id="toolbar" value="[下载] [分享] [删除]          第 1/1 张" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#fafafa;strokeColor=#d9d9d9" vertex="1" parent="1">
+          <mxGeometry x="100" y="490" width="600" height="40" as="geometry"/>
+        </mxCell>
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>