[
  {"op": "source", "role": "price", "kind": "F64"},
  {"op": "add", "type": "ger40_lab_nodes::Scale", "name": "scaled", "bind": {"factor": {"F64": 2.0}}},
  {"op": "feed", "role": "price", "into": ["scaled.value"]},
  {"op": "add", "type": "Bias", "name": "bias", "bind": {"scale": {"F64": 0.5}}},
  {"op": "connect", "from": "scaled.value", "to": "bias.signal"},
  {"op": "expose", "from": "bias.bias", "as": "bias"}
]