code-to-course - SKILL.md Agent Skill

name: code-to-course description: "Turn any codebase into a beautiful, interactive single-page HTML course with bilingual (Chinese/English) support. Use this skill whenever someone wants to create an interactive course, tutorial, or educational walkthrough from a codebase or project. Also trigger when users mention 'turn this into a course,' 'explain this codebase interactively,' 'teach this code,' 'interactive tutorial from code,' 'codebase walkthrough,' 'learn from this codebase,' 'make a course from this project,' '把代码变成课程,' '把这个变成教程,' '代码教学,' or '代码转课程.'"

Codebase-to-Course (代码转课程)

Transform any codebase into a stunning, interactive course with bilingual (中英文) output.

The output is a directory containing a pre-built styles.css, main.js, per-module HTML files, and an assembled index.html — open it directly in the browser with no setup required.

Bilingual Requirement: Every screen in every module must contain both Chinese (中文) and English text. The primary audience is Chinese speakers learning technical concepts, but English should always be available for reference.

Language Strategy

All course content is presented in bilingual format:

Headings/Titles: Chinese first, English in parentheses or subtitle
Body text: Chinese paragraph, followed by English translation in a lighter/smaller style
Code explanations: Chinese explanation (primary), English explanation (secondary)
Quiz questions/options: Both languages shown
Glossary tooltips: Chinese definition primary, English definition secondary
Chat animations/Messages: Chinese text, with English hover tooltip

Add this CSS custom property to the course's _base.html for bilingual styling:

:root {
  /* ... existing vars ... */
  --lang-primary: #1a1a2e;
  --lang-secondary: #6b7280;
}

.lang-zh { /* Chinese primary text */ }
.lang-en { /* English secondary text, lighter color */ }
.lang-en {
  color: var(--lang-secondary);
  font-size: 0.9em;
  font-style: italic;
  margin-top: 0.25em;
}

First-Run Welcome

When the skill is first triggered, introduce yourself in both languages:

我可以把任何代码库变成互动课程，教你代码如何工作——不需要任何编程基础。

I can turn any codebase into an interactive course that teaches how it works — no coding knowledge required.

只需指向一个项目：

本地文件夹 — 例如 "把 ./my-project 变成课程"

GitHub 链接 — 例如 "make a course from https://github.com/user/repo"

当前项目 — 如果已经在代码库中，直接说 "把这个变成课程"

Who This Is For / 目标用户

The target learner is a "vibe coder" — someone who builds software by instructing AI coding tools in natural language.

假设零基础。 每个 CS 概念都需要用通俗语言解释。不使用行话。语气像一个聪明的朋友在解释，不是教授讲课。

Assume zero technical background. Every CS concept explained in plain language.

The Process / 流程

Phase 1: Codebase Analysis (代码分析)

Read all key files, trace data flows, identify main components, map communication patterns.

提取内容:

主要"角色"（组件/服务/模块）及其职责
主要用户旅程（端到端使用时发生了什么）
关键 API、数据流和通信模式
巧妙的工程模式（缓存、懒加载、错误处理等）
技术栈及选择原因

Phase 2: Curriculum Design (课程设计)

Structure as 4-6 modules. Arc: start from user-facing behavior → progressively zoom into code.

模块位置	目的	对 vibe coder 的意义
1	"这个应用做什么——以及当你使用时发生了什么"	从产品开始，追踪一个核心用户动作到代码中
2	认识角色	知道有哪些组件，以便告诉 AI "把这个逻辑放在 X 而不是 Y"
3	组件如何通信	理解数据流，解决"它没有显示出来"的问题
4	外部世界（API、数据库）	了解外部依赖，评估成本、限速和故障模式
5	巧妙的技巧	学习模式（缓存、分块、错误处理），可以向 AI 请求
6	当事情出错时	建立调试直觉，脱离 AI bug 循环

This is a menu, not a checklist — pick modules that serve the codebase.

Each module must contain:

3-6 screens (sub-sections)
At least one code↔English/Chinese translation
At least one interactive element
One or two "aha!" callout boxes
One metaphor that fits the concept
Bilingual: Every screen has both Chinese and English text

Mandatory interactive elements:

群聊动画 — Group Chat Animation (iMessage/微信风格)
数据流动画 — Message Flow / Data Flow Animation
代码↔中英翻译块 — Code ↔ Chinese/English Translation Blocks
测验 — Quizzes (至少每个模块一个)
术语工具提示 — Glossary Tooltips (每个术语首次出现)

Phase 2.5: Module Briefs (complex codebases only)

For complex codebases, write briefs at course-name/briefs/0N-slug.md.

Phase 3: Build the Course (构建课程)

Output structure:

course-name/
  styles.css       ← copied from references/styles.css
  main.js          ← copied from references/main.js
  _base.html       ← customized shell
  _footer.html     ← copied from references/_footer.html
  build.sh         ← copied from references/build.sh
  briefs/          ← module briefs (complex only)
  modules/
    01-intro.html
    02-actors.html
    ...
  index.html       ← assembled by build.sh

Step 1: Setup — Copy 4 files verbatim from references/.

Step 2: Customize _base.html — Replace COURSE_TITLE, accent colors, nav dots.

Step 3: Write modules — Each module file contains only <section class="module"> content.

Bilingual module content pattern:

<h2>认识角色 — Meet the Actors</h2>
<p class="lang-zh">这个应用由几个主要组件组成，它们各自负责不同的工作。</p>
<p class="lang-en">This app is made of several components, each responsible for different tasks.</p>

For translation blocks (code explanations):

<div class="translation-english">
  <span class="translation-label">中文解释</span>
  <div class="translation-lines">
    <p class="tl">发送请求到这个 URL 并等待响应...</p>
  </div>
  <span class="translation-label" style="margin-top:8px">English Translation</span>
  <div class="translation-lines">
    <p class="tl">Send a request to the URL and wait for a response...</p>
  </div>
</div>

For glossary tooltips:

<span class="term" data-definition-zh="API（应用程序编程接口）就像餐厅的服务员——你告诉服务员你想要什么，他们把请求传达给厨房，然后把食物端回来。"
            data-definition-en="An API is like a restaurant waiter — you tell them what you want, they relay the request to the kitchen, and bring the food back.">
  API
</span>

For quizzes:

<div class="quiz-question">
  <p class="lang-zh">哪个组件负责处理用户的点击事件？</p>
  <p class="lang-en">Which component handles user click events?</p>
</div>
<div class="quiz-options">
  <button data-value="a">
    <span class="lang-zh">前端组件</span>
    <span class="lang-en">Frontend Component</span>
  </button>
</div>

Step 4: Assemble — Run bash build.sh from course directory.

Phase 4: Review and Open (回顾和打开)

After build.sh, open index.html in the browser. Walk through what was built.

Design Identity / 设计标识

Warm palette: 暖色调，米白背景，暖灰色
Bold accent: 一个自信的强调色
Distinctive typography: 有性格的展示字体
Generous whitespace: 呼吸感
Dark code blocks: IDE 风格，Catppuccin 语法高亮

Reference Files / 参考文件

The references/ directory contains detailed specs. Read them only when you reach the relevant phase.

references/content-philosophy.md — Content rules and guidelines
references/gotchas.md — Common failure points checklist
references/module-brief-template.md — Module brief template
references/design-system.md — Complete CSS custom properties, color palette, typography
references/interactive-elements.md — HTML patterns for every interactive element

Critical Rules / 关键规则

Never regenerate styles.css or main.js — always copy from references
Module files contain only <section> content — no <html>, <head>, <body>, <style>, <script>
Use CSS scroll-snap-type: y proximity (NOT mandatory)
Use min-height: 100dvh with 100vh fallback on .module
Interactive element JS is in main.js; wire up via data-* attributes
Every piece of content must be bilingual — Chinese primary, English secondary
Glossary tooltips must include both data-definition-zh and data-definition-en
The gloss tooltip JS (in main.js) must be updated to show bilingual definitions