I have a form where on submit an image is generated and added to the newly added row. Works for me, but had issues where an query json column was used in the prompt. I had to add the query json into my action and use the result in my prompt.
Wouldn’t you want the users to be able to preview the image though? What about pointing the image picker and the generate image action to a column in the user profiles? That way I think you can still use a native add form, not sure about edit forms though.
solved this in the end by having one button which saves the text and then another which does the image which seems to work. the user profile worked too but becames a little complex. thanks!