Function compute_process_mining 

pub fn compute_process_mining<N, E>(
    graph: &Graph<N, E>,
) -> ProcessMiningAnalysis
where
    N: ClassNode,
    E: EdgeKind,

Walk every node’s callSequences blob, mine a Petri net per class that emits ≥2 sequences, classify transitions, and score conformance.

Mirrors analysis/process_mining.py::annotate_graph’s threshold rule.