[Bugs] When an update is available and the app is multiple versions behind, the app ...

**Mood:** 😔
**Category:** Bugs

When an update is available and the app is multiple versions behind, the app will close and update twice in a row. It seems that the update info is stale in the app when it gets a few versions behind.

---
| Field | Value |
| --- | --- |
| App version | 0.2.31 |
| OS | Windows 10.0.26100 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 5 |

Start by reproducing issue #993 on Windows 10 with an app version several releases behind, then trace the update-check and restart flow to find where update information becomes stale. Done means an available update is applied once rather than causing two consecutive closes and updates, with coverage for the multiple-version gap.

索引モデルが issue の本文から書いたものです。