Ability to provide generation data manually

Considering that generation data isn't reliable (tools such as ComfyUI don't play ball reliably, and provide partial data at best at the moment), and that it's easy to strip that metadata by doing things such as using an image editor to do final touch-ups, or using a separate workflow for inpainting, it would be nice if it were possible to provide generation data when uploading a new picture. This way, partial metadata can be enhanced (for example, link used resources manually to a ComfyUI image), provide prompts, seeds and so on. On top of all that, it might make sense to provide a way to mark a picture as touched up manually, to make it clear such an output from the generation data just won't happen.