[General] Need basic file editing directly in the tool.

**Mood:** 😊
**Category:** General

Need basic file editing directly in the tool. View changes is cute, but having to open VS Code to edit / tweak a file, or populate an env file, feels silly when basic file edit functioanlity (at least on par with notepad) is expected.

---
| Field | Value |
| --- | --- |
| App version | 0.2.34 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 2 |

从 issue 中描述的 /chat 体验入手，检查应用当前如何呈现文件更改。定义受支持的基本编辑范围，并确认用户可以直接编辑或填充文件，而无需打开 VS Code；issue 未提供文件或测试入口。

由索引模型根据 Issue 内容生成。