{ "format_version": 1, "kind": "process", "name": "plateau-in-wf",
  "pipeline": [ { "block": "std::sweep", "metric": "sqn", "select": "argmax" },
    { "block": "std::walk_forward", "in_sample_ms": 1209600000, "out_of_sample_ms": 604800000, "step_ms": 604800000, "mode": "rolling", "metric": "sqn", "select": "plateau:mean" } ] }