[aw] Agentic TCGC Bump for http-client-csharp is missing required tool

### Workflow Failure

**Workflow:** [Agentic TCGC Bump for http-client-csharp](https://github.com/microsoft/typespec/blob/main/.github/workflows/bump-tcgc-csharp.md)
**Branch:** main
**Run:** https://github.com/microsoft/typespec/actions/runs/35178194571

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

**Missing Tools:**
- **web-fetch**: Task requires fetching npm registry metadata for \`@azure-tools/typespec-client-generator-core\` via a web-fetch tool to determine the latest stable TCGC version. No web-fetch tool is available in this session, and direct network access via curl/wget/npm to re
\[Content truncated due to length\]

Alternatives:

| Tool | Alternative |
| --- | --- |
| web-fetch | Could not find an alternative way to query the npm registry from this sandbox; github MCP tools only cover repository content, not external npm registry data. |

### 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/microsoft/typespec/actions/runs/35178194571
````

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 bump-tcgc-csharp failure in https://github.com/microsoft/typespec/actions/runs/35178194571`

> [!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 [Agentic TCGC Bump for http-client-csharp](https://github.com/microsoft/typespec/actions/runs/35178194571) · copilot · 20.2 AIC · [◷](https://github.com/search?q=repo%3Amicrosoft%2Ftypespec+is%3Aissue+%22gh-aw-workflow-id%3A+bump-tcgc-csharp%22&type=issues)

Start with .github/workflows/bump-tcgc-csharp.md and the failed run linked in the issue. Read the agentic-workflows skill or gh-aw debug guide, then determine how the workflow should access npm registry metadata without the reported web-fetch tool. Done means the workflow can complete the TCGC version check and bump without reporting a missing tool.

Written by the indexing model from the issue text.