Newly enabled model remains unavailable until local Copilot state/cache/login is cleared

Describe the bug

Newly enabled Copilot models can remain unavailable because the local model catalog does not refresh. Sonnet 5 was enabled in GitHub settings but unavailable in CLI and Visual Studio until local Copilot state/cache was manually reset. This seems to also affect the model list in the Visual Studio copilot extension. It was never a problem with Visual studio before I installed CLI and wasn't an issue for my coworkers who haven't used the CLI.

Note: I did both renames and re-login in the repro, I didn't check the model list in-between, so I'm unclear on what specifically fixed it and I don't have the admin rights to keep testing this by enabling models.

Affected version

1.0.80, also affected Visual Studio Insiders 12106.202

Steps to reproduce the behavior

1. Enable a previously unavailable model in Copilot settings.
2. Restart/re-authenticate CLI and Visual Studio.
3. Model remains unavailable.
4. Close Copilot and VS
5. Rename %LOCALAPPDATA%\copilot to something like copilot-backup.
6. Rename %USERPROFILE%.copilot\config.json to config.json.backup.
7. Start Copilot CLO, /logout /login
8. Model becomes available in CLI and Visual Studio.

Expected behavior

I assume model availability should refresh on restart at least. I don't see any documentation for manually updating the model list, so I assume it isn't something the user is supposed to worry about.

Additional context

No response

まず、モデルを有効にした後の CLI と Visual Studio におけるモデル利用可能性のフローを、報告されている状態の保存場所 %LOCALAPPDATA%\copilot および %USERPROFILE%.copilot\config.json と、/logout /login コマンドを使用して再現します。これらのファイルの名前を手動で変更する前後の動作を比較します。再起動または再認証後に、状態を手動で削除しなくてもモデルカタログが更新されれば完了です。