Tufalabs/duck-harness ? reverse-engineered prompt

Build me a self contained viewer for an ARC AGI 3 benchmark run, like the one in this repo. I want to open a local page and browse through the example run, see each game, the grid states, the actions taken, the model reasoning, and the score for each pass. It should default to the bundled example run, but also let me point it at another run folder if I want to inspect a different one.

Keep it simple to launch locally, with no GPU needed just to view things. If you need to look up current docs online for any library or setup detail, feel free to do that. The main goal is a clean, easy to use interface that helps me understand how the solver behaved on each game and why it made the choices it did.