[Requests and ideas] Please add a search both in the nav pane and in the chat pane (most important...

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

Please add a search both in the nav pane and in the chat pane (most important) for obvious reasons

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| Field | Value |
| --- | --- |
| App version | 0.2.27 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 6 (Week 1) |

从 /chat 路径开始，检查导航窗格和聊天窗格的结构。定义两个窗格的搜索行为，并验证用户可以从每个搜索界面找到相关的导航内容和聊天内容。

由索引模型根据 Issue 内容生成。