Make image preview larger when adding caption

[irfanhakim-as]

Summary

The current UI to add image captions (alt text), while pretty, has the preview of the image we're captioning far too small. This makes it difficult to refer to the image we wish to describe while typing it out, and requires you to navigate back and forth to refer to the image someplace else (i.e. source of the image).

Suggestion

Implement a solution that'd make the image preview we're captioning bigger so users can add their captions while referring to the image from the same spot easily. Ideally, the user would not need to go back and forth between composing the caption + navigating away or enlarging/expanding and collapsing the image.

References

How it looks on an iPhone 11 (left: Sharkey, right: Firefish)

How it looks on desktop on a 1440p monitor (top: Sharkey, bottom: Firefish)