260706_1_계정, 로그인, 보안 초안 작성

.env

@@ -11,6 +11,28 @@ DB_PASSWORD=Umsang6595!!
 DB_POOL_MIN=5
 DB_POOL_MAX=20
 
+# Authentication session
+SESSION_COOKIE_NAME=session_id
+SESSION_COOKIE_SECURE=false
+SESSION_MAX_AGE_SECONDS=43200
+SESSION_IDLE_TIMEOUT_SECONDS=14400
+PASSWORD_BCRYPT_ROUNDS=12
+EMAIL_REVERIFY_DAYS=90
+
+# Gmail SMTP (development)
+SMTP_HOST=smtp.gmail.com
+SMTP_PORT=587
+SMTP_USERNAME=umsangdon@gmail.com
+SMTP_PASSWORD=qgig lbcq tasm xcqq
+SMTP_USE_TLS=true
+EMAIL_FROM_ADDRESS=umsangdon@gmail.com
+EMAIL_FROM_NAME=Aislo Support
+EMAIL_RETRY_COUNT=3
+EMAIL_RETRY_DELAY_SECONDS=2
+EMAIL_OTP_VALID_MINUTES=5
+EMAIL_NOTIFICATION_ENABLED=true
+ADMIN_EMAIL=umsangdon@gmail.com
+
 LOG_LEVEL=INFO
 UPLOAD_MAX_MB=500
 MESH_GRID_SIZE=1.0