Sync the disk image list with current filesystem state

[deboer-tim]

Is your enhancement related to a problem? Please describe

We keep a list of previously-built images today, but it can get out of sync / you can generate the same file again. We should provide some ways to keep the list in sync with what's currently on disk and - if you generate the same image 20 times - not endlessly add to the list.

Describe the solution you'd like

Some ideas:

• Periodically sync with the file system and show 'validation' when files cannot be found.
• Allow the user to update 'missing' disk images, e.g. pick new folder.
• Allow the user to add images that were generated outside of the extension.
• When you generate the same image again, remove the previous one from the list.

Describe alternatives you've considered

No response

Additional context

No response

[vrothberg]

Periodically sync with the file system and show 'validation' when files cannot be found.
Allow the user to add images that were generated outside of the extension.

👍

When you generate the same image again, remove the previous one from the list.

I'd do this iff the same output folder was used.

Allow the user to update 'missing' disk images, e.g. pick new folder.

That feels complicated or like a symptomatic workaround.