Design Decisions Behind app.build, a Prompt-to-App Generator

App.build is a new open-source AI code generator that prioritizes reliability for creating CRUD web apps. It uses a finite state machine, parallel tree search, and specialized actors to generate code. The system focuses on TypeScript-based apps and implements extensive validation checks to ensure quality. While currently limited in scope, app.build aims to expand to support more tech stacks and application types in the future, maintaining its core principle of producing functional, well-tested applications.