feat: historial de correos en ticket + fechas fijas a America/Santiago

frontend/src/app/(app)/settings/email/page.tsx

@@ -12,6 +12,7 @@ import {
   type EmailLogEntry,
 } from "@/lib/api";
 import { useAuth } from "@/lib/auth";
+import { formatDateTime } from "@/lib/format";
 import Modal from "@/components/Modal";
 
 const PLACEHOLDERS = [
@@ -415,7 +416,7 @@ export default function EmailPage() {
                   log.map((e) => (
                     <tr key={e.id}>
                       <td className="text-muted small">
-                        {new Date(e.createdAt).toLocaleString("es-CL")}
+                        {formatDateTime(e.createdAt)}
                       </td>
                       <td>
                         <code className="small">{e.template}</code>