[aw] Extension PR Labeler failed

### Workflow Failure

**Workflow:** [Extension PR Labeler](https://github.com/Azure/azure-dev/blob/main/.github/workflows/extension-pr-labeler.md)
**Branch:** kaiyan/refactor
**Run:** https://github.com/Azure/azure-dev/actions/runs/34562361191
**Pull Request:** [#9997](https://github.com/Azure/azure-dev/pull/9997)

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

**Last agent output:**
```
Files touched span `azure.ai.agents`, `azure.ai.connections`, and `azure.ai.projects` folders. Matching labels: ext-agents, ext-connections, ext-projects.
● List unique extension folders changed (shell)
│ gh pr view 9997 --repo Azure/azure-dev --json files -q '.files[].path' | sed -E
│ 's#cli/azd/extensions/([^/]+)/.*#\1#' | sort -u
└ 4 lines…
Confirmed three extension folders changed, all with matching existing labels.
● Add extension labels to PR 9997 (shell)
│ printf '{"pull_request_number":9997,"labels":["ext-agents","ext-connections","ext-projects"]}' |
│ safeoutputs add_labels .
└ 14 lines…
```

### 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/Azure/azure-dev/actions/runs/34562361191
````

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 extension-pr-labeler failure in https://github.com/Azure/azure-dev/actions/runs/34562361191`

> [!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 [Extension PR Labeler](https://github.com/Azure/azure-dev/actions/runs/34562361191) · 7.04 AIC · [◷](https://github.com/search?q=repo%3AAzure%2Fazure-dev+is%3Aissue+%22gh-aw-workflow-id%3A+extension-pr-labeler%22&type=issues)
> - [x] expires on Sep 18, 2026, 4:38 AM UTC

Start with .github/workflows/extension-pr-labeler.md and the failed run 34562361191, then read the agentic-workflows skill at .github/skills/agentic-workflows/SKILL.md. Inspect the failure around PR #9997 and verify the workflow completes while applying ext-agents, ext-connections, and ext-projects to the pull request.

Written by the indexing model from the issue text.