During August 2025, Pavlo Karas developed Arduino file extension support for C++ projects in the zed-industries/zed repository. He updated configuration management to recognize Arduino files as C++ code, allowing seamless integration of Arduino file types within existing C++ workflows. This approach leveraged his skills in Arduino, C++, and TOML, focusing on enhancing cross-language tooling and improving developer onboarding for Arduino projects. The work addressed the need for consistent handling of multiple file types without introducing new bugs, demonstrating careful attention to configuration hygiene. Over the month, Pavlo delivered one feature, emphasizing depth in configuration and language support integration.