assets/gitnexus-logo.svg is branding for the Gitea instance that hosts this
project, not for NexusOS itself, so it does not belong in the public repo.
.gitignore already listed it, but gitignore does not apply to tracked files,
so it stayed until removed explicitly.
The README header already points at assets/n-small.png, so nothing references
it anymore.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
GitNexus · part of the Nexus stack
