[rewrite] Minor fixes to models, session generator and example .env

.env-example

@@ -30,8 +30,10 @@ SMTP_HOST=
 SMTP_PORT=587
 SMTP_USER=
 SMTP_PASSWORD=
-SMTP_TLS=True  # Use TLS for email security
-SMTP_SSL=False  # Set to True if using SSL instead of TLS
+# Use TLS for email security
+SMTP_TLS=True
+# Set to True if using SSL instead of TLS
+SMTP_SSL=False
 
 # Email sender information
 EMAILS_FROM_EMAIL=