Developed comprehensive developer-facing documentation for the nonebot/nonebot2 repository, focusing on the HTMLKit plugin that enables lightweight HTML and CSS-based image rendering within bots. Leveraging technical writing and documentation skills, the work detailed installation, usage, rendering APIs, and configuration options using Markdown and JSON. This documentation established clear standards and practical examples, improving onboarding for new developers and clarifying best practices across the plugin ecosystem. By providing structured guidance, the contribution reduced support overhead and prepared the platform for broader adoption. No bugs were addressed during this period, with efforts concentrated on enhancing maintainability and consistency through robust documentation practices.