### 🚀 The feature, motivation and pitch - [interior_design_assistant](https://github.com/meta-llama/llama-stack-apps/blob/c67febf6eb39ac42dd195c8c691b2f6a792d858a/examples/interior_design_assistant/api.py#L141-L171) app expects JSON structured output, however model output may not be valid JSON. - Use [response_format](https://github.com/meta-llama/llama-stack/blob/00816cc8ef4cb72728a1728b80b24bdadc0d080f/llama_stack/apis/inference/inference.py#L97-L111) to generate structured output into valid JSON format. ### Alternatives _No response_ ### Additional context _No response_