May 2025 monthly summary for Rekordny/Project_IRIS. Focused on delivering the SAK Faction Content Expansion, expanding gameplay depth and modding support. Key deliverables include new leaders, traits, ideas, a comprehensive nation focus tree, localization updates for characters and national spirits, and a new history file. No major bugs fixed this month in this repository; all work completed through a single feature-focused commit with traceability. Overall impact: enhances player engagement, expands late-game options, improves localization quality, and strengthens foundation for future expansions. Technologies/skills demonstrated: feature design, data-driven content creation, localization engineering, version control and patch-style release notes.