8 tables (Gerbils, Litters, Contacts, Enclosures, ColorVarieties, GerbilPhotos,
HealthRecords, WeightRecords); enums as text columns; ColorVariety HasData seed
of the 18 GEN-1 base varieties. Replaces the prior pre-DATA-2 InitialCreate.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
