[Requests and ideas] Option to show changes as a tree structure

**Mood:** 😊
**Category:** Requests and ideas

Option to show changes as a tree structure

---
| Field | Value |
| --- | --- |
| App version | 1.0.10 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 7 |

未指定源文件或测试。从 /chat 路径开始，跟踪当前如何呈现更改；在实现之前明确预期的树结构和交互方式。完成的标准是可以将聊天更改作为树结构查看，并且相关 UI 测试已确认其行为。

由索引模型根据 Issue 内容生成。