When using the new "expand" feature on a PR created from a session, the expan...

When using the new "expand" feature on a PR created from a session, the expanded PR view is not linked to the existing session (it only shows a "new session" button in the header). Additionally, the button for marking a draft PR ready for review is disabled in the sidebar, but in the session PR view it is enabled.

---
| Field | Value |
| --- | --- |
| App version | 1.1.7 |
| OS | macOS 26.5.2 |
| Theme | Xotopio |
| Path | /chat |
| Tenure | Week 9 |

Start in the desktop app at /chat and reproduce the report using a session-created draft PR, then use the new expand feature. Compare the expanded PR view with the session PR view, including session linkage and the ready-for-review control. Done means the expanded view remains linked to the existing session and the draft status control behaves consistently.

Written by the indexing model from the issue text.