Update epic checklist, mark completed tasks, fix Gitea username/domain
references, and update DEPLOYMENT.md with correct registry paths.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Gitea provides source hosting, container registry, and CI/CD in one package.
Images are pushed as user-level packages to the Gitea registry over SSL.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>