SERVER_PORT=8080
GIN_MODE=debug

DB_HOST=localhost
DB_PORT=5433
DB_USER=postgres
DB_PASSWORD=postgres
DB_NAME=kefu_cloud
DB_SSLMODE=disable

JWT_SECRET=kefu-cloud-dev-secret-key
CORS_ALLOW_ORIGINS=*
# 可选：MaxMind GeoLite2/GeoIP2 City MMDB 文件
# GEOIP_DB_PATH=/path/to/GeoLite2-City.mmdb