Bilingual note: This English edition mirrors SKILL.zh-CN.md. For the authoritative Chinese version, see SKILL.zh-CN.md.

EPUB Reader Optimizer

本 skill 用于优化 EPUB 文件的阅读体验。核心做法是不改变原 EPUB 的章节结构、HTML 文本与图片资源，只通过重写 CSS 与必要的元数据来提升中文阅读体验、修复常见排版与渲染缺陷。

⚠️ Security & Side-Effects Disclosure

Behaviour	Default	Rationale
Network access	OFF	Only fetch remote resources when user explicitly approves.
Host toolchain install	OFF / fail-closed	Never auto-run `pip install`, `npm install -g`, `apt install`, etc. Report missing deps and wait for manual confirmation.
LaTeX `-shell-escape`	OFF	Disabled by default; only enabled when user consents AND environment is sandboxed AND content is trusted.

Core principles: