[Requests and ideas] It is unfortunate that you loose chat history when you delete a session.

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

It is unfortunate that you loose chat history when you delete a session. Ideally, I would be able to keep the wortree structure clean without loosing chat history.

---
| Field | Value |
| --- | --- |
| App version | 1.0.15 |
| OS | macOS 26.5.1 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 1 |

Start at the /chat path and trace how session deletion and chat history are currently handled. Define the intended behavior for deleting a session while preserving its history, then identify the affected persistence and UI areas; done means the worktree can be cleaned without losing accessible chat history.

索引モデルが issue の本文から書いたものです。