修复报销详情时区并按 KISS 收敛页面（07-27-yang-jun-reimbursement-readiness）

client/src/lib/displayFormat.ts

@@ -10,6 +10,7 @@ export function formatDisplayDate(value: string | null | undefined) {
   const timestamp = new Date(value).getTime();
   if (Number.isNaN(timestamp)) return "-";
   return new Intl.DateTimeFormat("zh-CN", {
+    timeZone: "Asia/Shanghai",
     year: "numeric",
     month: "long",
     day: "numeric",
@@ -23,6 +24,7 @@ export function formatDisplayDateTime(value: string | null | undefined) {
   if (Number.isNaN(timestamp)) return formatDisplayDate(value);
 
   return new Intl.DateTimeFormat("zh-CN", {
+    timeZone: "Asia/Shanghai",
     year: "numeric",
     month: "long",
     day: "numeric",