Worked on the marcin-filipiak/test_wspolpracy repository to deliver two documentation-driven features focused on improving onboarding and project planning. Developed and updated Markdown-based guides, including a comprehensive user manual for the Weather Checking Program that covers both console and graphical interface usage. Created and maintained project planning documents to clarify scope, outline timelines, and support upcoming sprints. Emphasized technical writing and project management skills to standardize documentation, enabling faster onboarding and smoother collaboration for developers and stakeholders. No functional bugs were addressed during this period, as the work concentrated on maintainability and cross-functional clarity through detailed documentation and planning.