我是一个不懂技术的产品经理, 我想通过 Mermaid 图表深度梳理一下业务。麻烦帮我分析一下这里面有哪些值得挖掘的点。帮我写几篇逻辑详尽的说明文档，放在 docs/explain/*.md 。文档里要大量运用 Mermaid 语法来可视化这些逻辑，越详细越好,越详细越好,越详细越好，哪怕我不懂技术也能一眼看清业务逻辑的走向。辛苦啦！
I am a non-technical product manager, and I want to deeply organize the business through Mermaid charts. Please help me analyze what points in here are worth digging into. Help me write several logically detailed explanation documents and place them in docs/explain/*.md. The documents need to extensively use Mermaid syntax to visualize these logics, the more detailed the better, the more detailed the better, the more detailed the better, so that even if I don't understand technology, I can see the direction of the business logic at a glance. Thank you for your hard work!
