{
  "schema_version": "markitect.memory.graph.v1",
  "id": "invalid-graph",
  "nodes": [
    {
      "id": "node.a",
      "kind": "decision"
    }
  ],
  "edges": [
    {
      "id": "edge.bad",
      "kind": "depends_on",
      "source": "node.a",
      "target": "missing"
    }
  ]
}