add icon to ninefold game nf-kzv4 ← Beads

Twinned from https://github.com/cfsh/ninefold/issues/916 by tools/beads/import_github.py's reconcile pass.

<img width="512" height="512" alt="Image" src="https://github.com/user-attachments/assets/38f4848f-10c9-4433-b72b-0a27818c9f2f"; />

We need to attribute like this:

" Paste this link on the website where your app is available for download or in the description section of the platform or marketplace you’re using. <a href="https://www.flaticon.com/free-icons/octopus"; title="octopus icons">Octopus icons created by Magnific - Flaticon</a> "