Copy buttons for restoring archived projects

When restoring archived projects, it would be convenient to have copy-buttons to copy the ciphertext and the gpg command.

<img width="819" height="521" alt="Image" src="https://github.com/user-attachments/assets/7f245bf5-9b0a-45f8-b8cd-be3ac7fe4349" />