Respect model support for reasoning summaries - #32290
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## What changed - Add `supports_reasoning_summary_parameter` to model metadata, defaulting to `true` for backward compatibility. - Omit `reasoning.summary` and its summary-delivery stream option when the selected model does not support the parameter. - Apply the capability of the final selected model when a spawned agent uses a different model. ## Testing - Cover unsupported models in regular requests and spawned-agent model overrides. GitOrigin-RevId: 72b783799fc0685cef1501ef2dbf62d1308ceead
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Respect model support for reasoning summaries
What changed
supports_reasoning_summary_parameterto model metadata, defaulting totruefor backward compatibility.reasoning.summaryand its summary-delivery stream option when theselected model does not support the parameter.
different model.
Testing
overrides.