implemented new DB core, referal system

src/main/resources/application.yml

@@ -46,6 +46,12 @@ app:
       # Maximum number of batches to process per cleanup run
       max-batches-per-run: ${APP_SESSION_CLEANUP_MAX_BATCHES:20}
 
+# GeoIP configuration
+# Set GEOIP_DB_PATH environment variable to use external file (recommended for production)
+# If not set, falls back to classpath:geoip/GeoLite2-Country.mmdb
+geoip:
+  db-path: ${GEOIP_DB_PATH:}
+
 logging:
   level:
     root: INFO