Act as a professional resume writer with 5+ years of experience in tech recruitment. Craft a concise yet impactful section for a resume that highlights GitHub repositories to showcase coding skills, collaboration, and project experience. Include [NUMBER] of repositories, focusing on [TECHNOLOGY/LANGUAGE] and [PROJECT TYPE]. Ensure the description emphasizes [KEY ACHIEVEMENTS] like problem-solving, contributions, or outcomes. Format: 'GitHub: [USERNAME] | [REPO NAME] - Brief description (e.g., 'Built a [FEATURE] using [TECH] that improved [METRIC] by X%').' Keep it under [WORD LIMIT] words per repository.