October 2025: Delivered a C++ two-person financial life-simulation feature (Alice vs Bob) with a 20-year horizon, modeling incomes, expenses, savings, investments, mortgage payments, property taxes, inflation, salary indexing, and life events. Established core architecture and scaffolding with initial commits (Create Bunyakov_Ivan, Add files via upload, Create ProgaTZ41), enabling future extensions and scenario comparisons. No major bug fixes recorded; focus was on delivering a robust, testable feature. Business value: provides enterprise-ready decision support for long-term financial planning and scenario analysis; lays the groundwork for expanding to additional personas and life events. Technologies/skills demonstrated: C++, simulation modeling, financial modeling, data structures, version control discipline, and performance-aware coding.