Remove Portainer references, mark NPM and env management as
completed, update epic checklist and decided approach.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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>