pub fn verify_trace_file(
path: &str,
fanout: u32,
nodes: Option<u32>,
) -> Result<String>Expand description
Verify a trace relayed peer-to-peer and return the topology summary as
JSON — the same {"nodes", "rounds", "relay_depth", "relayed_nodes"} the
harness’s verify_cascade_relay produced. Every failure — unreadable
file, malformed line, truncated stream, star-shaped tree, wrong fleet
size — exits non-zero with a specific diagnostic.