修复报销附件上传与中文文件名（07-28-travel-reimbursement-guide）

client/src/pages/ReimbursementDetailPage.tsx

@@ -13,6 +13,7 @@ import {
   deleteReimbursementItem,
   downloadReimbursementAttachment,
   fetchReimbursementDetail,
+  MAX_REIMBURSEMENT_ATTACHMENT_FILES,
   precheckReimbursement,
   submitReimbursement,
   updateReimbursementItem,
@@ -662,6 +663,9 @@ export function ReimbursementDetailPage() {
       if (!files.length) {
         throw new Error("请选择附件材料");
       }
+      if (files.length > MAX_REIMBURSEMENT_ATTACHMENT_FILES) {
+        throw new Error(`单次最多上传 ${MAX_REIMBURSEMENT_ATTACHMENT_FILES} 个附件，请分批上传。`);
+      }
       return uploadReimbursementAttachments(reimbursementId, files);
     },
     onSuccess: async () => {
@@ -1496,7 +1500,7 @@ export function ReimbursementDetailPage() {
                 <div className="flex flex-col gap-3 md:flex-row md:items-center md:justify-between">
                   <div className="space-y-1">
                     <h3 className="text-base font-semibold text-zinc-900">补充附件</h3>
-                    <p className="text-xs text-zinc-500">合同、订单、支付截图或情况说明；敏感附件下载会要求填写用途。</p>
+                    <p className="text-xs text-zinc-500">合同、订单、支付截图或情况说明；PDF/JPG/PNG/WebP，单次最多 5 个。</p>
                   </div>
                   {canEditItems ? (
                     <div className="flex flex-col gap-2 md:flex-row md:items-center">
@@ -1516,7 +1520,16 @@ export function ReimbursementDetailPage() {
                         type="file"
                         accept="application/pdf,image/jpeg,image/png,image/webp"
                         multiple
-                        onChange={(event) => setSelectedAttachmentFiles(Array.from(event.target.files ?? []))}
+                        onChange={(event) => {
+                          const files = Array.from(event.target.files ?? []);
+                          if (files.length > MAX_REIMBURSEMENT_ATTACHMENT_FILES) {
+                            setSelectedAttachmentFiles([]);
+                            event.target.value = "";
+                            toast.error(`单次最多上传 ${MAX_REIMBURSEMENT_ATTACHMENT_FILES} 个附件，请分批上传。`);
+                            return;
+                          }
+                          setSelectedAttachmentFiles(files);
+                        }}
                       />
                       <Button
                         type="button"