pub fn load_baseline(scenario: &str) -> TraceLogExpand description
Load a trace fixture by scenario name.
Looks up baselines/<PINNED_CLI_VERSION>/<scenario>.jsonl and returns
the parsed (direction, line) pairs. Panics if the baseline is
missing - scenarios are expected to ship their baseline on creation.
ยงPanics
If the fixture file is missing, unreadable, or malformed.