[Bugs] It started randomly creating sessions with names like "Ignore me, Temp 2, Temp"

**Mood:** 😊
**Category:** Bugs

It started randomly creating sessions with names like "Ignore me, Temp 2, Temp"

---
| Field | Value |
| --- | --- |
| App version | 0.2.8 |
| OS | Windows 10.0.26200 |
| Theme | Django Reborn Again |
| Path | /chat |
| Tenure | Week 2 |

Start at the /chat path and reproduce the unexpected session creation using app version 0.2.8 on Windows 10. Check when sessions receive names such as "Ignore me, Temp 2, Temp" and trace the behavior to its entry point. Done means the unintended sessions no longer appear and the reported naming behavior is covered by verification.

索引モデルが issue の本文から書いたものです。