[aw] Runtime Failure Observer (xharness) is missing required tool

### Workflow Failure

**Workflow:** [Runtime Failure Observer (xharness)](https://github.com/dotnet/xharness/blob/main/.github/workflows/runtime-failure-observer.agent.md)
**Branch:** main
**Run:** https://github.com/dotnet/xharness/actions/runs/33311509598

> [!WARNING]
> **Missing Tools Reported**: The agent reported missing tools during execution.

**Missing Tools:**
- **runtime-failure-observer-http**: runtime-failure-observer-http helix-console --job-id a4542ea0-bb99-4332-ac63-07cce4277ee4 --work-item "Microsoft.VisualBasic.Core.Tests" returned exact stderr: runtime-failure-observer-http: HTTP request failed with status 404

Alternatives:

| Tool | Alternative |
| --- | --- |
| runtime-failure-observer-http | Restore the named Helix work-item console endpoint, then rerun the observer. |

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

**Last agent output:**
```
│ 'runtime-failure-observer-http helix-console --job-id a4542ea0-bb99-4332-ac63-07cce4277ee4
│ --work-item "Microsoft.VisualBasic.Core.Tests" returned exact stderr:
│ runtime-failure-observer-http: HTTP request failed with status 404' --alternatives 'Restore
│ the named Helix work-item console endpoint, then rerun the observer.' --integrity high …
└ 15 lines…
Scan stopped: a required Helix work-item console returned HTTP 404. Recorded the unavailable `runtime-failure-observer-http` capability; no PR was created.
Changes +0 -0
Duration 1m 16s
Tokens ↑ 719.2k (673.6k cached, 45.6k written) • ↓ 5.4k (903 reasoning)
Resume copilot --resume=4dbec022-6002-4fed-905e-2a841cec94fe
```

### 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/xharness/actions/runs/33311509598
````

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 runtime-failure-observer.agent failure in https://github.com/dotnet/xharness/actions/runs/33311509598`

> [!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 [Runtime Failure Observer (xharness)](https://github.com/dotnet/xharness/actions/runs/33311509598) · 29.1 AIC · [◷](https://github.com/search?q=repo%3Adotnet%2Fxharness+is%3Aissue+%22gh-aw-workflow-id%3A+runtime-failure-observer.agent%22&type=issues)
> - [x] expires on Sep 6, 2026, 12:31 PM UTC

Start with .github/workflows/runtime-failure-observer.agent.md and the failed run linked in the issue. Reproduce or inspect the `runtime-failure-observer-http helix-console` request for job a4542ea0-bb99-4332-ac63-07cce4277ee4 and the Microsoft.VisualBasic.Core.Tests work item. Done means the named Helix console endpoint no longer returns HTTP 404 and the observer completes without the missing-tool failure.

Written by the indexing model from the issue text.