Function compile_to_rust_traced 

pub fn compile_to_rust_traced(
    source: &str,
) -> Result<(String, Vec<&'static str>, Vec<(&'static str, &'static str)>), ParseError>

One compile returning the generated Rust, the fired-optimization keywords, AND the (winner, loser) precedence decisions made — what an interactive viewer calls per toggle state to show the firing opts and the conflicts that occurred.