Over 300+ engineering hours were invested into building custom tooling (BookStudio layout editor, decoupled JSON schemas, and vector rendering engines). Generative AI was used strictly for initial image asset creation, subjected to rigorous parental and medical inspection where every flawed render, anatomical defect, or distorted limb was discarded. The 5 core books in our collection are rendered on this engine, while Animal Vision operates on its own dedicated visual framework.