- Add dbip-city-lite package to devenv for GeoIP testing - Set GEOIP_DATABASE_PATH env var to point to the MMDB database - Add tests for initGeoReader double-init and error handling - Add real database tests for IP lookups (US, AU, DE, GB) - Make real database tests conditional with describe.skipIf - Improve test coverage from ~97% to 98.82% Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>