The local LLM is incapable of generating a valid prototype

[cmenon12]

Describe the bug

When using the local LLM ai/gpt-oss, the LLM cannot generate a valid prototype and fails every time.

• It cannot correctly generate the next_question_value that points to the number of the next question.
• It uses the wrong answer_type, e.g., "text" for an address question
• It adds extraneous properties, e.g., adds options to questions that don't need them.
• It adds an empty "submit" question at the end.

Steps to reproduce

Run the Docker Compose script with the local LLM ai/gpt-oss.

How should the bug be fixed?

Options include:

• Try out different models.
• Improve the prompt & schema to coax the model. But need to be careful about tuning them for a local LLM to the detriment of the Azure LLM.
• Split the generation step into multiple steps (e.g., generate the questions, then put them in order). This is a larger piece of work but likely necessary anyway to generate larger prototypes

Device, OS and browser used

No response

Additional context (if applicable)

Follow-on from #148 and #152.

Screenshots (if applicable)

No response