v0.1.0

Added

• IP geolocation lookup - resolve IPv4 addresses to city, country, continent
• IP mapping management - CIDR, range, single IP, wildcard, and array formats
• Location hierarchy management - continent to country to region to city
• Bulk CSV import via ZIP file upload with Spring Batch processing
• Two-level cache - local Caffeine + distributed Valkey (Redisson)
• API key authentication
• Swagger UI documentation

See CHANGELOG.md for details.