Bug: A session shows title and worktree name but no run/open/open canvas icon are shown

Bug:
Usually a session shows the title, worktree name, and on the right the run button and open button along with the open canvas icon.
I see a problematic session shows title and worktree name but no buttons for run, open, nor canvas icon.

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| Field | Value |
| --- | --- |
| App version | 1.0.21 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 6 |

在 Windows 10 上使用应用版本 1.0.21，复现 /chat 路径中缺失的控件，并将有问题的会话与正常会话进行比较。跟踪会话 UI 的入口点，以确定为什么缺少 „run“、„open“ 和 „canvas“ 控件。当受影响的会话始终显示这三个控件时，即视为完成。

由索引模型根据 Issue 内容生成。