January 2026 (picnixz/cpython): Focused on strengthening developer-facing documentation in core modules. Key features delivered: improved PyLong_AsNativeBytes documentation clarifying negative padding behavior and added documentation for the F and D complex format characters in the struct module docstring. Major bugs fixed: none; month centered on documentation improvements rather than code changes. Overall impact: clearer, more usable docs for complex formatting and native byte semantics, reducing onboarding time and support queries, and contributing to maintainability of core modules. Technologies/skills demonstrated: deep understanding of CPython's struct and integer representations, documentation standards, version control best practices, and collaboration across the repo.