when choosing model there is no segragation per model provider only custom mo...

when choosing model there is no segragation per model provider only custom models name no provider grouping

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| Field | Value |
| --- | --- |
| App version | 1.1.5 |
| OS | macOS 26.5.2 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 3 |

Start at the /chat model chooser and trace how model names are presented. Confirm how provider information is available, and consider the work complete when models are visibly grouped by provider instead of appearing as one ungrouped custom-name list.

索引モデルが issue の本文から書いたものです。