fix(analytics-mailer): send emails individually to avoid exposing other recipients in CC/To field

apps/analytics-mailer/src/index.ts

@@ -166,13 +166,17 @@ async function main() {
         if (!SMTP_HOST) {
             throw new Error("SMTP_HOST is missing for live run.");
         }
-        await transporter.sendMail({
-          from: SMTP_SENDER,
-          to: client.clientEmail,
-          subject,
-          html,
-        });
-        console.log(`Successfully sent to ${client.clientEmail}`);
+        
+        const recipients = client.clientEmail.split(',').map(e => e.trim()).filter(e => e.length > 0);
+        for (const recipient of recipients) {
+          await transporter.sendMail({
+            from: SMTP_SENDER,
+            to: recipient,
+            subject,
+            html,
+          });
+          console.log(`Successfully sent to ${recipient}`);
+        }
       }
     } catch (e: any) {
       const errorMsg = e.response?.data || e.message;