{
  "name": "board_update_data",
  "description": "Shallow-merge a patch into the element's `data` payload.",
  "input_schema": {
    "type": "object",
    "properties": {
      "elementId": {
        "type": "string"
      },
      "dataPatch": {
        "type": "object",
        "description": "Keys to merge into element.data"
      }
    },
    "required": [
      "elementId",
      "dataPatch"
    ]
  },
  "timeout": 30
}