During January 2026, Chemax999 focused on enhancing the 2gis/on-premise-helm-charts repository by clarifying the data retention policy documentation for the Navi-Castle service. Leveraging DevOps and Kubernetes expertise, Chemax999 updated Markdown-based documentation to explicitly define storePeriod retention and backup copy behaviors, aligning these settings with operational guidance. This work addressed ambiguity in retention policies, reducing the risk of misconfiguration and easing the support burden for operators. The contribution improved compliance visibility and maintainability within the team, ensuring that operational teams could more easily interpret and apply data retention settings. The depth of work centered on documentation and policy clarity.