Add optional square image thumbnails like RedReader.

[Coehill]

Is Your Feature Request Related to a Problem?

Can we please have a feature to make the image icons have sharp and not rounded edges, like the RedReader app? Rounded icons is a pet peeve of mine. 😋

Feature Description

Add post appearance setting which makes the image thumbnail have sharp edges in compact mode.

Alternative Solutions

No response

Additional Context

No response

[Glazed]

I think this would be nice, too. Maybe make the corner radius configurable.