Function warmstart_teacher_trace_from_jsonl_path 

pub fn warmstart_teacher_trace_from_jsonl_path(
    path: impl AsRef<Path>,
    contract: &WarmStartExactJhTeacherContract,
    return_horizon: usize,
) -> Result<WarmStartExactJhTeacherTrace, WarmStartExactJhError>

Parse a normalized planner JSONL trace from a filesystem path.