Built for the Build Small Hackathon (Hugging Face and Gradio), Backyard AI track. A

fine-tuned 4B model, a 1.3B vision model, a deterministic safety layer, and a 202-case

benchmark with one number that has to stay at zero.

Seven years ago I hit a bump in a Fiat and the engine died. No damage, no warning light,

just dead, on a road with no signal. The cause turned out to be a crash safety switch