[aw] CI Outer-Loop Failure Scanner — Feedback failed

### Workflow Failure

**Workflow:** [CI Outer-Loop Failure Scanner — Feedback](https://github.com/dotnet/runtime/blob/main/.github/workflows/ci-failure-scan-feedback.md)
**Branch:** main
**Run:** https://github.com/dotnet/runtime/actions/runs/32972905935
**Pull Request:** [#132763](https://github.com/dotnet/runtime/pull/132763)

> [!WARNING]
> **Engine Failure**: The `copilot` engine terminated unexpectedly.

**Last agent output:**
```
Changes +0 -0
Duration 3s
Resume copilot --resume=446b58b1-f9b8-4a41-9294-e06495dc1688
● Request failed (transient_auth_error). Retrying...
● Request failed (transient_auth_error). Retrying...
Authentication failed with provider at http://172.30.0.30:10002 (HTTP 401).
Check your COPILOT_PROVIDER_API_KEY or COPILOT_PROVIDER_BEARER_TOKEN.
Changes +0 -0
Duration 3s
Resume copilot --resume=3c4d26ee-8764-43d9-baca-348c4f5e2e71
```

### Action Required

**Assign this issue to an agent** to debug and fix the issue.

Debug with any coding agent

Use this prompt with any coding agent (GitHub Copilot, Claude, Gemini, etc.):

````
Debug the agentic workflow failure using https://raw.githubusercontent.com/github/gh-aw/main/debug.md

The failed workflow run is at https://github.com/dotnet/runtime/actions/runs/32972905935
````

Manually invoke the agent

Debug this workflow failure using your favorite Agent CLI and the `agentic-workflows` prompt.

- Start your agent
- Load the `agentic-workflows` skill from `.github/skills/agentic-workflows/SKILL.md` or
- Type `debug the agentic workflow ci-failure-scan-feedback failure in https://github.com/dotnet/runtime/actions/runs/32972905935`

> [!TIP]
>
> Stop reporting this workflow as a failure
>
> To stop a workflow from creating failure issues, set `report-failure-as-issue: false` in its frontmatter:
> ```yaml
> safe-outputs:
> report-failure-as-issue: false
> ```
>
>

> Generated from [CI Outer-Loop Failure Scanner — Feedback](https://github.com/dotnet/runtime/actions/runs/32972905935) · [◷](https://github.com/search?q=repo%3Adotnet%2Fruntime+is%3Aissue+%22gh-aw-workflow-id%3A+ci-failure-scan-feedback%22&type=issues)

Start with .github/workflows/ci-failure-scan-feedback.md and inspect run 32972905935, including the reported transient_auth_error and HTTP 401 from the Copilot provider. Use the linked debug.md guidance and agentic-workflows skill; done means the feedback workflow can complete without the authentication failure or correctly stops reporting this failure.

Written by the indexing model from the issue text.