docs: refine README visual preview descriptions based on actual screenshot content

Author: sanbuphy

README-CN.md

@@ -15,19 +15,22 @@ Learn Harness Engineering 是一门专注于 AI 编程智能体工程化落地
 
 ---
 
-## 页面截图
+## ✨ 界面速览
 
-中文首页
+### 🏠 课程主页
+> 包含完整的课程大纲与核心理念介绍，清晰的学习路径助你快速入门。
 
-![中文首页预览](./docs/public/screenshots/readme/zh-home.png)
+![课程主页预览](./docs/public/screenshots/readme/zh-home.png)
 
-中文讲义页
+### 📖 沉浸式讲义
+> 结合真实痛点与实战项目（如 Project 01）的深度解析，提供沉浸式的阅读与学习体验。
 
-![中文讲义预览](./docs/public/screenshots/readme/zh-lecture-01.png)
+![课程讲义预览](./docs/public/screenshots/readme/zh-lecture-01.png)
 
-中文资料库
+### 🗂️ 开箱即用的资料库
+> 整理了可直接复用的中文模板与参考配置，专治 AI Agent 在多轮开发中的“做一半停下”、“上下文断裂”等疑难杂症。
 
-![中文资料库预览](./docs/public/screenshots/readme/zh-resources.png)
+![扩展资料库预览](./docs/public/screenshots/readme/zh-resources.png)
 
 ## PDF 构建与 Release 流水线
 

README.md

@@ -15,19 +15,22 @@ Learn Harness Engineering is a course dedicated to the engineering of AI coding
 
 ---
 
-## Visual Preview
+## ✨ Visual Preview
 
-English home page
+### 🏠 Course Homepage
+> A comprehensive course outline and introduction to core philosophies, providing a clear path to get started.
 
-![English homepage preview](./docs/public/screenshots/readme/en-home.png)
+![Course homepage preview](./docs/public/screenshots/readme/en-home.png)
 
-English lecture page
+### 📖 Immersive Lectures
+> Deep dives into real-world pain points and hands-on projects (like Project 01) for an immersive learning experience.
 
-![English lecture preview](./docs/public/screenshots/readme/en-lecture-01.png)
+![Course lecture preview](./docs/public/screenshots/readme/en-lecture-01.png)
 
-English resource library
+### 🗂️ Ready-to-Use Resource Library
+> Templates and reference configurations designed to solve common pitfalls in multi-turn AI agent development, such as context loss and premature task completion.
 
-![English resources preview](./docs/public/screenshots/readme/en-resources.png)
+![Resource library preview](./docs/public/screenshots/readme/en-resources.png)
 
 ## PDF Coursebooks