Example hangs / NaN errors on Windows + Mac CPU installs

[rita-hub-ba]

1. i installed under supervision of chatgpt 5 using https://github.com/nari-labs/dia quickstart info , disappointed that nothing worked
2. . Installed on Mac m3(Python 3.11, CPU only): script stalls, needs probability sanitization + argmax fallback in _sample_next_token. (Note chatgpt 5 tried to fix _sample_next_token no hope)
3. . Installed on Windows (Python 3.11, Git Bash): same hang after model download, process uses 0% CPU. h/w: windows 10 pro, build 19045; HP desktop i5

pip install git+... doesn’t include example/, so python -m dia.example.simple fails out of the box.

Suggestion from chatgpt: add CPU-safe defaults (disable multinomial or clamp probs), include examples in package, and document Mac/Win setup.