Refine auth, API proxy, and server routing

frontend/pages/api/[...path].js

@@ -1,7 +1,17 @@
 export default async function handler(req, res) {
-  const { 0: path } = req.query;
+  const path = Array.isArray(req.query.path)
+    ? req.query.path.join('/')
+    : req.query.path;
 
-  const backendUrl = `http://localhost:3501/${path}`;
+  if (!path) {
+    res.status(400).json({ error: 'Missing API path' });
+    return;
+  }
+
+  const query = { ...req.query };
+  delete query.path;
+  const searchParams = new URLSearchParams(query);
+  const backendUrl = `http://localhost:3501/api/${path}${searchParams.size ? `?${searchParams}` : ''}`;
 
   const response = await fetch(backendUrl, {
     method: req.method,

frontend/pages/search.js

@@ -12,7 +12,7 @@ import { formatMoney, parseDateTime, getDatePart } from '../lib/utils';
 export default function Search() {
   const router = useRouter();
   const { showToast } = useToast();
-  const confirm = useConfirm();
+  const { confirm } = useConfirm();
   const { categories, error: categoriesError } = useCategories();
 
   // 显示分类加载错误