The Undercurrent

StateDiff is Git for the physical world: version control and regression debugging for electronics prototypes. When a prototype stops working, Git shows what changed in the code, but nothing records that a wire moved. StateDiff fills that gap. A developer captures checkpoints of their bench, each linking a photo, a Git commit and test results. Muse Spark reads the photo into structured data: every visible part and wire endpoint. The developer confirms or corrects it, then seals the checkpoint as an immutable snapshot. When a test goes from PASS to FAIL, StateDiff compares the two snapshots with deterministic code, shows the physical and code changes together, and ranks what to inspect first, with evidence highlighted on both photos. It reports possible causes, not proven root causes. Endpoints the model can't see stay unknown instead of being guessed. This hackathon build runs locally and uses a simulated rig: the bench images are AI-enhanced and the hardware tests are simulated. The Muse Spark analysis is live and the Git commits are real.