it's show retrying model it was working fine.

it's show retrying model it was working fine. recently changes break everything.

---
| Field | Value |
| --- | --- |
| App version | 1.1.12 |
| OS | Windows 10.0.26200 |
| Theme | Zhxo'red |
| Path | /chat |
| Tenure | Day 1 |

Azure openai give response but later it's show problem xxx-xyz is not available. use xyz. same happen for openrouter.

Start at the /chat path and reproduce the failure on Windows 10.0.26200 with app version 1.1.12 using Azure OpenAI and OpenRouter, checking the initial response and the later retry/model-unavailable error; done means the reported retry behavior is reproduced, diagnosed, and verified as fixed for both providers.

索引モデルが issue の本文から書いたものです。