Fix Relevance Check Agent: invalid model name claude-opus-4.6 → claude-sonnet-4

[Copilot]

The Relevance Check Agent workflow failed because claude-opus-4.6 is not a valid Copilot engine model name. The Copilot CLI exits immediately with no output, triggering the failure handler.

• Updated model in relevance-check.md from claude-opus-4.6 to claude-sonnet-4
• Recompiled relevance-check.lock.yml via gh aw compile

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[agentics] Relevance Check Agent failed</issue_title>
<issue_description>### Workflow Failure

Workflow: Relevance Check Agent
Branch: main
Run: https://github.com/microsoft/gctoolkit/actions/runs/22447603451

Action Required

Option 1: Assign this issue to Copilot

Assign this issue to Copilot using the agentic-workflows sub-agent to automatically debug and fix the workflow failure.

Option 2: 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 prompt from .github/agents/agentic-workflows.agent.md or https://github.com/github/gh-aw/blob/main/.github/agents/agentic-workflows.agent.md
• Type debug the agentic workflow relevance-check failure in https://github.com/microsoft/gctoolkit/actions/runs/22447603451

Generated from Relevance Check Agent

• expires on Mar 5, 2026, 3:02 PM UTC

Comments on the Issue (you are @copilot in this section)

Custom agent used: agentic-workflows
GitHub Agentic Workflows (gh-aw) - Create, debug, and upgrade AI-powered workflows with intelligent prompt routing

• Fixes [agentics] Relevance Check Agent failed #488

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud