Use info@kenjim.com as sender and contact destination

Separates SMTP auth user (Bridge credential) from the public-facing
sender address. FROM_EMAIL and CONTACT_TO are set in .env.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/server.js

@@ -26,7 +26,7 @@ app.post('/contact', async (req, res) => {
 
   try {
     await transporter.sendMail({
-      from: `"KenJim Technologies" <${process.env.SMTP_USER}>`,
+      from: `"KenJim Technologies" <${process.env.FROM_EMAIL || process.env.SMTP_USER}>`,
       to: process.env.CONTACT_TO,
       replyTo: email,
       subject: `[kenjim.com] ${service || 'General Inquiry'} — ${name}`,