收口个人中心弹层组件

- 新增 PlatformProfileModalShell 统一个人中心主弹层与副弹层壳层
- 抽离 PlatformProfilePlayedWorksModal 与 PlatformProfileReferralModal 并移除首页内联历史与邀请弹层实现
- 让昵称充值任务兑换码账单等弹层复用共享壳层并补齐测试和文档

src/components/rpg-entry/rpgEntryProfileDashboardPresentation.ts

@@ -75,6 +75,24 @@ export function formatPlayedWorkId(work: ProfilePlayedWorkSummary) {
   return work.profileId?.trim() || work.worldKey;
 }
 
+export function formatSnapshotTime(value: string | null | undefined) {
+  if (!value) {
+    return '刚刚保存';
+  }
+
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return value;
+  }
+
+  return date.toLocaleString('zh-CN', {
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+  });
+}
+
 export function buildProfileDashboardPresentation(
   dashboard: ProfileDashboardSummary | null,
 ): ProfileDashboardPresentation {