feat: email verification + delete confirmation + smtp/cors/prod hardening

web/src/components/UpdateNoticeModal.tsx

@@ -0,0 +1,21 @@
+type Props = {
+  title: string;
+  body: string;
+  onAcknowledge: () => Promise<void> | void;
+};
+
+export default function UpdateNoticeModal({ title, body, onAcknowledge }: Props) {
+  return (
+    <div className="fixed inset-0 z-[120] bg-black/50 backdrop-blur-sm flex items-center justify-center p-4">
+      <div className="card max-w-lg w-full p-6">
+        <h2 className="text-xl font-semibold mb-2">{title}</h2>
+        <p className="muted whitespace-pre-wrap mb-6">{body}</p>
+        <div className="flex justify-end">
+          <button className="btn" onClick={() => void onAcknowledge()}>
+            Got it
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}