chore(readme): 更新 readme，使用了 nano banana 生成的项目架构图以及贡献指南

README.md

@@ -3,7 +3,7 @@
 # QQ群日常分析插件
 
 
-[![Plugin Version](https://img.shields.io/badge/Latest_Version-v3.9.0-blue.svg?style=for-the-badge&color=76bad9)](https://github.com/SXP-Simon/astrbot-qq-group-daily-analysis)
+[![Plugin Version](https://img.shields.io/badge/Latest_Version-v3.9.3-blue.svg?style=for-the-badge&color=76bad9)](https://github.com/SXP-Simon/astrbot-qq-group-daily-analysis)
 [![AstrBot](https://img.shields.io/badge/AstrBot-Plugin-ff69b4?style=for-the-badge)](https://github.com/AstrBotDevs/AstrBot)
 [![License](https://img.shields.io/badge/License-MIT-green.svg?style=for-the-badge)](LICENSE)
 [![](https://img.shields.io/badge/五彩斑斓的Bug群-Bug反馈群&水群-white?style=for-the-badge&color=76bad9&logo=qq&logoColor=76bad9)](https://qm.qq.com/q/oTzIrdDBIc)
@@ -211,4 +211,20 @@ MIT License
 
 ## 贡献
 
+### 项目架构图
+
+<div align="center">
+
+![项目架构图](./structure-demo.jpg)
+
+</div>
+
+### 贡献指南
+
+<div align="center">
+
+![项目架构图](./contribution-guide.jpg)
+
+</div>
+
 欢迎提交Issue和Pull Request来改进这个插件！