June 2025 monthly summary for hoi4-modding-den/Dens-HRE. Focus this month was feature delivery and data integration, with no major bug fixes closed. The highlight is the addition of Bohemia (XBH) as a new playable country with full integration into the game: graphics culture, color scheme, initial state ownership, updated country tag mappings, and comprehensive localizations, including a capital update to ensure Bohemia is fully playable and localized out of the box. Overall impact: expands the playable nation roster, enhances player experience with richer flavor and localization coverage, and establishes data-driven foundations for future nation additions. Technologies/skills demonstrated: data-driven mod design, localization workflow, asset and state mapping, and version-controlled collaboration for nation integrations.