It would be nice to have the feature to add multiple repositories.

It would be nice to have the feature to add multiple repositories in one operation. I have over 50 repositories that I need to add

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| Field | Value |
| --- | --- |
| App version | 1.1.12 |
| OS | macOS 26.6.0 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 2 (Week 1) |

Start by tracing the existing repository-add flow in the GitHub Copilot app and how it handles a single repository. Define how one operation should accept multiple repositories, then verify that a batch of repositories can be added successfully without requiring separate operations.

索引モデルが issue の本文から書いたものです。