[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/33192276312
**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=2a784ec4-db19-4108-be02-3278f69ef481
● 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=8b5e0037-2f81-4562-879f-81397e45775a
```

### 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/33192276312
````

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/33192276312`

> [!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/33192276312) · [◷](https://github.com/search?q=repo%3Adotnet%2Fruntime+is%3Aissue+%22gh-aw-workflow-id%3A+ci-failure-scan-feedback%22&type=issues)

Start with the failed run 33192276312 and .github/workflows/ci-failure-scan-feedback.md, then follow the agentic-workflows instructions in .github/skills/agentic-workflows/SKILL.md and debug.md. Determine why the copilot provider returned HTTP 401 and verify the workflow completes without an engine failure or incorrectly reported failure issue.

Written by the indexing model from the issue text.