Hedgehog is an opinionated build system for AI-assisted software development. AI can generate code quickly, but keeping a growing project coherent is harder. Context gets lost, architecture drifts, and shortcuts compound. Hedgehog enforces a disciplined, backend-first workflow: **Types → Schema → Backend → UI**. With small, verifiable changes and architecture enforced by tooling, Hedgehog helps AI-assisted projects stay structured, maintainable, and scalable.