Initial commit: Memind H5 portal with MindSpace, Plaza, and agent jobs.

Track application source and tests; exclude local env, user workspaces, and runtime data via .gitignore.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/utils/time.ts

@@ -0,0 +1,36 @@
+const pad = (n: number) => String(n).padStart(2, '0');
+
+function sameDay(a: Date, b: Date) {
+  return (
+    a.getFullYear() === b.getFullYear() &&
+    a.getMonth() === b.getMonth() &&
+    a.getDate() === b.getDate()
+  );
+}
+
+export function formatChatTime(timestampSec: number): string {
+  const date = new Date(timestampSec * 1000);
+  const now = new Date();
+  const time = `${pad(date.getHours())}:${pad(date.getMinutes())}`;
+
+  if (sameDay(date, now)) {
+    return time;
+  }
+
+  const yesterday = new Date(now);
+  yesterday.setDate(yesterday.getDate() - 1);
+  if (sameDay(date, yesterday)) {
+    return `昨天 ${time}`;
+  }
+
+  if (date.getFullYear() === now.getFullYear()) {
+    return `${date.getMonth() + 1}月${date.getDate()}日 ${time}`;
+  }
+
+  return `${date.getFullYear()}年${date.getMonth() + 1}月${date.getDate()}日 ${time}`;
+}
+
+export function shouldShowTimestamp(currentSec: number, previousSec?: number): boolean {
+  if (previousSec === undefined) return true;
+  return currentSec - previousSec > 5 * 60;
+}