During June 2025, Demystify213 enhanced the is-a-dev/register repository by implementing domain configuration support for the new 'trmn' domain. Focusing on backend development and configuration management, Demystify213 centralized domain settings to streamline future multi-domain functionality. The work, written in Go, involved traceable configuration changes that prepared the codebase for upcoming domain-specific features and reduced onboarding time for new domains. While the scope was limited to a single feature and did not include bug fixes, the contribution laid foundational groundwork for scalable domain management, reflecting a methodical approach to backend extensibility and maintainability within the project’s configuration infrastructure.