feat: multi-module iteration

apps/mini-user/src/lib/datetime.ts

@@ -0,0 +1,16 @@
+/** 格式化为 Asia/Shanghai：2026-08-03 15:14:30（不依赖 Intl，兼容微信小程序） */
+export function formatShanghaiDateTime(input?: string | Date | null): string {
+  if (input == null || input === '') return '—';
+  if (typeof input === 'string') {
+    const s = input.trim();
+    if (/^\d{4}-\d{2}-\d{2}[ T]\d{2}:\d{2}/.test(s)) {
+      return s.slice(0, 19).replace('T', ' ');
+    }
+  }
+  const d = input instanceof Date ? input : new Date(input);
+  if (Number.isNaN(d.getTime())) return '—';
+  // 用 UTC 读数 + 固定东八区偏移，避免依赖 Intl / 设备时区 API 差异
+  const sh = new Date(d.getTime() + 8 * 60 * 60 * 1000);
+  const p = (n: number) => String(n).padStart(2, '0');
+  return `${sh.getUTCFullYear()}-${p(sh.getUTCMonth() + 1)}-${p(sh.getUTCDate())} ${p(sh.getUTCHours())}:${p(sh.getUTCMinutes())}:${p(sh.getUTCSeconds())}`;
+}