feat: responsive HTML email templates with DreamHost SMTP

- Add professional HTML email template matching CV aesthetic
- Implement multipart emails (HTML + plain text fallback)
- Configure DreamHost SMTP with SSL (port 465)
- Add "light only" color scheme for Gmail iOS compatibility
- Include Reply-To header for easy sender response
- Add email validation and integration tests
- Update .env.example with DreamHost/Gmail SMTP examples
- Add .env to .gitignore to protect credentials
- Document email template customization and dark mode approach

.env.example

@@ -50,17 +50,35 @@ BEHIND_PROXY=false
 TRUSTED_PROXY_IP=
 
 # Email Configuration (Contact Form)
-# For Gmail:
-# 1. Enable 2FA in your Google account
-# 2. Go to https://myaccount.google.com/apppasswords
-# 3. Generate an App Password
-# 4. Use that password here (not your regular Gmail password)
-SMTP_HOST=smtp.gmail.com
-SMTP_PORT=587
-SMTP_USER=your-email@gmail.com
-SMTP_PASSWORD=your-app-password-here
-SMTP_FROM_EMAIL=your-email@gmail.com
-CONTACT_EMAIL=txeo.msx@gmail.com
+#
+# Supported providers:
+#
+# DreamHost (port 465 - SSL):
+#   SMTP_HOST=smtp.dreamhost.com
+#   SMTP_PORT=465
+#   SMTP_USER=your-email@yourdomain.com
+#   SMTP_PASSWORD=your-email-password
+#   SMTP_FROM_EMAIL=your-email@yourdomain.com
+#
+# Gmail (port 587 - TLS):
+#   1. Enable 2FA in your Google account
+#   2. Go to https://myaccount.google.com/apppasswords
+#   3. Generate an App Password
+#   SMTP_HOST=smtp.gmail.com
+#   SMTP_PORT=587
+#   SMTP_USER=your-email@gmail.com
+#   SMTP_PASSWORD=your-app-password-here
+#   SMTP_FROM_EMAIL=your-email@gmail.com
+#
+# Port 465 = SSL (direct TLS connection)
+# Port 587 = TLS/STARTTLS (upgrades to TLS)
+#
+SMTP_HOST=smtp.dreamhost.com
+SMTP_PORT=465
+SMTP_USER=your-email@yourdomain.com
+SMTP_PASSWORD=your-password
+SMTP_FROM_EMAIL=your-email@yourdomain.com
+CONTACT_EMAIL=recipient@example.com
 
 # Production Settings
 # Uncomment for production: