Show invited people the Rule, let them copy its cards for their community, and replace an expired invitation link.

lib/create/inviteLastChanged.ts

@@ -0,0 +1,10 @@
+/** Short date for the invited-view facts table (`6 Nov 2026`). */
+export function formatInviteLastChanged(iso: string): string {
+  const date = new Date(iso);
+  if (Number.isNaN(date.getTime())) return iso;
+  return date.toLocaleDateString("en-GB", {
+    day: "numeric",
+    month: "short",
+    year: "numeric",
+  });
+}