A field that allows you to set the Image Focus Point (Kirby 4) independently from the image, querying a files field
Whats your use-case for this?
In [this issue] (https://github.com/getkirby/kirby/issues/5316) you suggest:
Allow manual activation for other file types, and also disable for image file type, in file blueprint.
That would keep it in the file details.
My current feeling is that this screams for a plugin solution but not in the core. In fact what you are describing in the last comment sounds a lot like https://getkirby.com/plugins/sylvainjule/annotator
For sure it could also be a plugin, it should just use the Core components somehow. For Sylvains plugin: I don’t trust them to be updated to v4.