Update and Improve README Documentation

首先阅读根目录下的 README.md，并将其中的分类和链接与仓库当前的项目目录进行对比。检查列出的每个项目，找出缺失或过时的条目，并验证链接和 Markdown 结构。完成的标准是 README 准确涵盖现有项目、仍然便于初学者使用，并且更改仅限于文档。

Description

The root README.md is currently outdated and does not include several projects that have been added to the repository by contributors over time.

The goal of this issue is to review the current repository structure and update the root README so that it accurately represents the projects currently available in the repository.

What needs to be done

• Review the current project directories in the repository.
• Identify projects that are missing from the root README.md.
• Add the missing projects to the appropriate categories.
• Create new categories where necessary if a project does not fit into the existing ones.
• Update existing project links if any of them are outdated or incorrect.
• Remove or update information that is no longer accurate.
• Fix spelling/formatting issues where appropriate.
• Keep the README beginner-friendly and easy to navigate.
• Ensure all project links point to the correct directories/files in the repository.
• Maintain a clean and consistent Markdown structure.

Important

The README should reflect the current state of the repository, including projects contributed after the original README was created.

Please do not make unrelated changes to the project's source code.

Acceptance Criteria

• All currently available projects are reviewed.
• Missing projects are added to the README.
• Projects are organized into appropriate categories.
• All project links are valid and point to the correct locations.
• Outdated or incorrect project information is updated.
• README formatting and headings are consistent.
• The README remains beginner-friendly and easy to navigate.
• Changes are limited to documentation/README updates.

Contribution

Please create a separate branch for this work and submit a Pull Request against the master branch.

In the Pull Request description, briefly mention:

• Which projects were added
• Which existing information was updated
• Any categories that were added or reorganized

Thank you for helping keep the project documentation up to date! 🚀