Fix LLM response parsing: summary field should be object not string

[exedev-shelley]

Author: nhkhang
Channel: #shelley
Link: https://discord.com/channels/1405685085923049482/1450334528210993295/1499832076755665038

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Issue

Getting error when processing LLM responses:

LLM request failed: failed to unmarshal response: json: cannot unmarshal object into Go struct field responsesOutputItem.output.summary of type string

Details

The summary field in the response struct at llm/oai/oai_responses.go#L99 is defined as a string, but according to the OpenAI API documentation for reasoning summaries, it should be an object.

Action Items

• Update the struct definition to use the correct type for summary field
• Test against OpenAI reasoning endpoints