Function run_hardware_passport 

pub fn run_hardware_passport(
    reprobe: bool,
    gemv_n: usize,
    cache: Option<PathBuf>,
    apply_env_hint: bool,
    decode_proxy: Option<Option<PathBuf>>,
    decode_proxy_tokens: u32,
) -> Result<(), String>

Probe / load HardwarePassport and print the ranked circuit matrix.

decode_proxy: None = skip; Some(None) = auto-find smollm; Some(Some(path)) = use path.