Generate one or more images from a text prompt using OpenAI's GPT Image models, save them to disk, and return the file paths plus an inline preview.

Prompt style: these models follow long, specific prose well. Describe subject, composition, lighting, medium/style, colour palette and mood. Any text that should appear inside the image must be given verbatim in quotes.

Cost control: use quality "low" (or gpt-image-1-mini) while iterating on composition, then re-render the winner at quality "high".

Edit existing image(s) with a text instruction. Covers three jobs:

1. Whole-image edit - pass one image and describe the change.

2. Inpainting - pass a mask PNG whose transparent areas mark what to replace; everything else is preserved.

3. Composition / style reference - pass several images and describe how to combine them (e.g. put the product from image 1 into the scene from image 2).

Input images must be png, jpg or webp. dall-e-3 cannot edit; use a gpt-image model.

Show the image models this API key can use, with guidance on which to pick. Call this when you are unsure whether a model is available, when a generation failed with a model error, or when the user asks what is possible.