Custom models not showing

Custom (copilot proxied) models configured in `https://github.com/organizations//settings/copilot/custom-models` are not showing

---
| Field | Value |
| --- | --- |
| App version | 1.1.12 |
| OS | macOS 26.5.2 |
| Theme | GitHub |
| Path | / |
| Tenure | Day 1 |

Start by reproducing the issue in the GitHub Copilot app on macOS 26.5.2 with a custom Copilot-proxied model configured through the organization settings URL. Trace how configured custom models are discovered and displayed; done means the configured models appear in the app.

索引モデルが issue の本文から書いたものです。