fix(sub): restore client email in panel copy/QR link remark (#5532)

Display-context links (Clients page QR + Information modals and the sub info page) dropped the client email from the link fragment in 3.4.0, showing only the inbound remark. Append the email back so the imported profile keeps its per-client label: inbound-host-email when a host is set, inbound-email otherwise. The usage template stays bypassed in display context, so no traffic or expiry data leaks.

frontend/src/pages/clients/ClientInfoModal.tsx

@@ -357,7 +357,7 @@ export default function ClientInfoModal({
                   const parts = parseLinkParts(link);
                   const fallback = `${t('pages.clients.link')} ${idx + 1}`;
                   const rowTitle = (parts && linkMetaText(parts)) || fallback;
-                  const qrRemark = [parts?.remark, client.email].filter(Boolean).join('-') || rowTitle;
+                  const qrRemark = parts?.remark || rowTitle;
                   const canQr = !isPostQuantumLink(link);
                   return (
                     <div key={idx} className="link-row">