SGLang explainer video

Input: sglang PR <N> (or a github.com/sgl-project/sglang/pull/N URL), or a Markdown article path. Output: ~/Desktop/SGLang_PR<N>_讲解_中英字幕.mp4 (article: SGLang_<slug>_技术解读_中英字幕.mp4) plus a still …_封面.png and a Bilibili cover …_封面_B站.png, rendered 1920×1080 with a 中文 narration and bilingual captions.

This skill drives HyperFrames' pr-to-video workflow (heygen-com/hyperframes, pinned) with a fixed house style and several fixes that make it work for Chinese. Read references/house-style.md before writing any script — it holds the rules the user already corrected once (terms, captions, cover, credits, PR status).

Core principle: understand it fully, explain all of it

The video exists so a viewer who has not read the PR / article understands every algorithm and every meaningful code change in it. That decides everything else: