Portfolio rules

portfolio.limit bounds the final returned set. Optional rules such as max_per_scaffold operate after eligibility and objective evaluation; they do not change a hard constraint into a ranking preference.

{
  "portfolio": {
    "limit": 100,
    "max_per_scaffold": 5
  }
}

The response records deduplication behavior and immutable product/reaction provenance. Large expansions—synthons, exact constraint evidence, objective components, or execution plans—are opt-in through include and participate in response/run budgets.