Voice mode install fails — 401 Unauthorized on internal Foundry Local NuGet feed

Describe the bug

Running  /voice  to enable dictation transcription fails during runtime installation with:

Voice runtime install failed: Error: Failed to download Microsoft.AI.Foundry.Local.Core 1.2.3 from any configured feed (api.nuget.org, pkgs.dev.azure.com): Download failed with status 401: https://pkgs.dev.azure.com/aiinfra/2692857e-05ef-43b4-ba9c-ccf1c22c437c/_packaging/7982ae-ed19-4a35-a362-a96ac99897b7/nuget/v3/flat2/microsoft.ai.foundry.local.core/1.2.3/microsoft.ai.foundry.local.core.1.2.3.nupkg

Environment:

• GitHub Copilot CLI version: 1.0.83
• OS: macOS (darwin-arm64)
• Reproduces consistently across attempts

Troubleshooting already tried:

• Confirmed this is unrelated to local  az login  / Azure tenant — the feed ( pkgs.dev.azure.com/aiinfra/... ) is a Microsoft-internal ADO org, not part of my organization's Azure tenant, so personal Azure credentials shouldn't be involved in this download at all.
• Verified CLI is on the latest version ( 1.0.83 ), no pending update.
• The failure is consistent, not transient (retried across multiple sessions/times).

Expected behavior: Voice runtime dependency should download successfully using the CLI's own bundled/managed authorization to the internal feed, without requiring any user-side Azure credentials.

Impact: Cannot enable  /voice  dictation transcription feature at all.

Affected version

GitHub Copilot CLI 1.0.83.

Steps to reproduce the behavior

Running  /voice  to enable dictation transcription fails during runtime installation with:

Voice runtime install failed: Error: Failed to download Microsoft.AI.Foundry.Local.Core 1.2.3 from any configured feed (api.nuget.org, pkgs.dev.azure.com): Download failed with status 401: https://pkgs.dev.azure.com/aiinfra/2692857e-05ef-43b4-ba9c-ccf1c22c437c/_packaging/7982ae-ed19-4a35-a362-

Expected behavior

Voice runtime dependency should download successfully using the CLI's own bundled/managed authorization to the internal feed, without requiring any user-side Azure credentials.

Additional context

• GitHub Copilot CLI version: 1.0.83
• OS: macOS (darwin-arm64)
• Reproduces consistently across attempts

Bắt đầu từ đường dẫn cài đặt runtime /voice và tái hiện trên macOS darwin-arm64 với CLI 1.0.83. Theo dõi quá trình tải xuống Microsoft.AI.Foundry.Local.Core 1.2.3 qua api.nuget.org và feed Azure DevOps được liệt kê, sau đó xác minh đã hoàn tất bằng cách xác nhận rằng có thể bật tính năng chuyển giọng nói thành văn bản khi đọc chính tả mà không cần người dùng đăng nhập Azure.