Feature Request: Add option to set custom preview for link cards

Currently we cant set our specified image is card preview, the preview is auto detected(maybe or og.png i guess?)
so need a option to set image for the preview

<img width="762" height="417" alt="Image" src="https://github.com/user-attachments/assets/7c0c61df-7be6-4eeb-a10a-72901faf549d" />