/image command fails – Unknown parameter: 'quality'

[Grek-arch]

Hi! Thanks for this great bot.

I'm using the latest version of the project, deployed on Railway. The /image command doesn't work. Here's the error from the logs:

openai.BadRequestError: 400 - {'error': {'message': "Unknown parameter: 'quality'", 'type': 'invalid_request_error', 'param': 'quality', 'code': 'unknown_parameter'}}

It seems that the call to client.images.generate(...) includes the quality parameter, which is not supported anymore by the OpenAI API.

Could you please update the code to remove or fix the usage of this parameter? Thank you!