Add `background=True` in deep research agent notebook

[loopasam]

The deep agent intro notebook (https://cookbook.openai.com/examples/deep_research_api/introduction_to_deep_research_api#inspect-intermediate-steps) states: "Set the background parameter to True. Since a Deep Research task can take several minutes to execute, enabling background mode will allow you to run the request asynchronously without having to worry about timeouts or other connectivity issues."

But the code doesn't actually set it in:

response = client.responses.create(
  model="o3-deep-research",
  input=[
    {
      "role": "developer",
      "content": [
        {
          "type": "input_text",
          "text": system_message,
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "input_text",
          "text": user_query,
        }
      ]
    }
  ],
  reasoning={
    "summary": "auto"
  },
  tools=[
    {
      "type": "web_search_preview"
    },
    {
      "type": "code_interpreter",
      "container": {
        "type": "auto",
        "file_ids": []
      }
    }
  ]
)

Fix:

add background=True parameter in the call, e.g.

response = client.responses.create(
    model="o3-deep-research",
    input=[
        {
          "role": "developer",
          "content": [
              {
                  "type": "input_text",
                  "text": system_message,
              }
          ]
        },
        {
            "role": "user",
            "content": [
                {
                    "type": "input_text",
                    "text": user_query,
                }
            ]
        }
    ],
    background=True,
    reasoning={
        "summary": "auto"
    },
    tools=[
        {
            "type": "web_search_preview"
        },
        {
            "type": "code_interpreter",
            "container": {
                "type": "auto",
                "file_ids": []
            }
        }
    ]
)

and the polling code should be added too? cf: https://platform.openai.com/docs/guides/background#polling-background-responses

But maybe it makes the notebook too complex. As an alternative, link to https://platform.openai.com/docs/guides/background