fix: use nodemailer address object for proper UTF-8 encoding in from name

src/services/mailer.ts

@@ -12,7 +12,7 @@ export async function sendMail(to: string, subject: string, html: string): Promi
 
   try {
     await transporter.sendMail({
-      from: `${config.email.smtpFromName} <${from}>`,
+      from: { name: config.email.smtpFromName, address: from },
       to,
       subject,
       html,