fix(proxy): 将开发服务器代理目标端口从8000更改为3000

修正Vite配置中的代理目标端口，以匹配后端服务的实际运行端口。同时在图片组件中添加referrerPolicy属性以防止referrer信息泄露。

frontend/react-template/src/components/DetailPanel/DetailPanel.tsx

@@ -30,6 +30,7 @@ export const DetailPanel = ({ node, edge, messages = [], onClose }: DetailPanelP
             key={idx}
             src={img.url}
             alt={img.alt || "Extracted"}
+            referrerPolicy="no-referrer"
             className="w-full h-20 object-cover rounded border border-gray-200 cursor-pointer hover:opacity-80 transition-opacity bg-gray-50"
             onClick={() => setPreviewImage(img.url)}
           />
@@ -52,6 +53,7 @@ export const DetailPanel = ({ node, edge, messages = [], onClose }: DetailPanelP
             key={`${url}-${idx}`}
             src={url}
             alt={`Image ${idx + 1}`}
+            referrerPolicy="no-referrer"
             className="w-full h-16 object-cover rounded border border-gray-200 cursor-pointer hover:opacity-80 transition-opacity bg-gray-50"
             onClick={() => setPreviewImage(url)}
             onError={(e) => {

frontend/react-template/vite.config.ts

@@ -15,7 +15,7 @@ export default defineConfig({
     port: 3000,
     proxy: {
       "/api": {
-        target: "http://43.106.118.91:8000",
+        target: "http://43.106.118.91:3000",
         changeOrigin: true,
       },
     },