Iteration
data class IterationTraceTableData(var runId: Int = -1, var iteration: Int = 0, var cumulativeReplications: Int = 0, var bestPenalizedObjective: Double = 0.0) : DbTableData(source)
One row per captured iteration of a run's trace (opt-in): the cumulative requested replications and the best penalized objective so far. Iteration 0 is the initialized state. Keyed by run id, so a trace-enabled rerun lands in the same database next to earlier trace-free experiments.