Step 1
Describe the project
Plain answers → level plan, helper scripts, Unreal Editor Python, Codex prompts, GitHub push. Vagon is unlocked only after everything else.
Turn your answers into a level_spec.json, local helper, Unreal Editor Python, Codex prompt, and Git sync packet.
After generation, click any tile to view/edit.
Use GitHub CLI auth on this machine, bind one repo, push the current build packet, then confirm the exact commit after Vagon pulls it.
After visually testing in Vagon, answer these checks. The tool writes a fresh Codex patch prompt referencing the current spec + your notes.