[Bugs] I have a session that deletes 2 million lines of code.

**Mood:** 😔
**Category:** Bugs

I have a session that deletes 2 million lines of code. When I toggle to that session, this entire app crawls to a halt -- everything becomes slow and unusable. I had to kill the app and ensure a different session was selected by default to get things normal again.

See: https://github.com/dotnet/java-interop/pull/1484

---
| Field | Value |
| --- | --- |
| App version | 1.0.9 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 7 |

从 /chat 路径开始，通过选择一个包含约 200 万行代码的会话来复现变慢问题，使用 Windows 10 上的应用版本 1.0.9。完成标准是切换到该会话后应用不再变慢或无法使用，且无需结束应用。

由索引模型根据 Issue 内容生成。