GPU detection with mkinitcpio is buggy for Plymouth themes.

chwd doesn't add the amdgpu (or the nvidia) module into the mkinicpio.conf file after the install, which results in the themes not working, this is a pretty straightforward fix afaik :D
Has been happening to me for the past three ISO installs.

<img width="751" height="361" alt="Image" src="https://github.com/user-attachments/assets/becdbaf4-a15c-43a6-a873-0a91cc041f82" />