It seems like if you have two github accounts registered (like a public one a...

It seems like if you have two github accounts registered (like a public one and an EMU one) and you change teh default identity it puts existing chats in a weird temporary state that ignores new chat messages (and the fork chat button doesn't work) until you go into the settings for that specific project and change the account for that project specifically.

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| Field | Value |
| --- | --- |
| App version | 1.1.2 |
| OS | macOS 26.6.0 |
| Theme | A cup of coffee |
| Path | /chat |
| Tenure | Day 1 |

首先，使用一个公开的 GitHub 账户和一个 EMU 账户在 macOS 26.6.0 上复现该问题：更改默认身份，然后检查现有 chat，并尝试发送消息或使用 fork chat 按钮。现有 chat 能继续接受消息，并且 fork chat 能正常工作，同时不会更改该项目设置中的账户，即表示完成。

由索引模型根据 Issue 内容生成。