GUI-Decisions

GUI grounding as a decision instead of generation: a fixed slot template (action, x, y, x2, y2, ...) read from next-token distributions, with coordinates as 256-bin labels rather than decoded JSON digits. ~150 ms per computer-use step on Gemma 4 31B, about 3x faster than the same model writing JSON. LoRA training code plus 2B and 31B weights on Hugging Face.