FeatReq: improve github embeds

# how the embed looks on sable 
<img width="879" height="613" alt="Image" src="https://github.com/user-attachments/assets/1b05f23f-577e-465e-a81f-269640b89b81" />

# here is how that same embed looks on discord 

<img width="738" height="223" alt="Image" src="https://github.com/user-attachments/assets/44ff1fbb-c7a4-4ac3-be2a-cbf7fe51793f" />