Looks good.

What I miss is a information who posted the note.

Some minor design things:

-Some margin between the post and the board on the left and right would be nice when using a card layout like you did 

-while replaying I would suggest to make the textfield not on a separate card because the replay and the note are bound together logically 

-the upper card does not have a border, but the replay card has a border on the left and right. This looks strange https://image.nostr.build/4b783801a0f9451186d72b2650ab11c59fdeea761bc0d26fc5194c5429445e7b.jpg