v1.57.2

🔧 Improved

• Link preview skeleton waits half a second: the loading placeholder only appears if a preview takes longer than 500ms, so fast previews no longer flash it.
• Video previews with no size: a video preview whose site gives no dimensions now sizes its thumbnail from the video's first frame instead of cropping it into 16:9.

Full Changelog: v1.57.1...v1.57.2