Function export_validated_traces 

pub fn export_validated_traces(
    state: &MissionState,
    _events: &[Event],
) -> Vec<InstructionPair>

Derive the validation-passed instruction-pair dataset from folded mission state. Selection is validation-PASSED and DERIVED, never stored: a run qualifies iff it is a Role::Worker run whose feature reached FeatureStatus::Complete inside a milestone that reached MilestoneStatus::Complete, AND the run’s own result is Some(RunResult::Pass). Runs on failed/skipped features, non-worker (orchestrator/validator) runs, and failed respawn attempts that precede a later passing run on the same now-Complete feature, are all excluded.

events is accepted (unused today) to keep the signature honest about what the export is a function of — the event log — should a future revision need raw event data the fold doesn’t retain (e.g. renders event timestamps); state alone is sufficient for the current instruction-pair shape since it is itself fold(events).