Fix stale model assertion in pr-code-quality-reviewer contract test

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot

pkg/cli/pr_code_quality_reviewer_workflow_contract_test.go

@@ -24,7 +24,7 @@ func TestPRCodeQualityReviewerWorkflowSubAgentModelContract(t *testing.T) {
 	require.NoError(t, err, "Should read pr-code-quality-reviewer workflow")
 
 	text := string(content)
-	assert.Contains(t, text, "model: copilot/gpt-5.4", "Main agent should use an explicit Copilot model")
+	assert.Contains(t, text, "model: openai/gpt-5.4", "Main agent should use an explicit model")
 	assert.Contains(t, text, "## agent: `grumpy-coder`", "Workflow should define the grumpy-coder sub-agent")
 	assert.Contains(t, text, "model: small", "Sub-agent should use the portable small alias")
 	assert.NotContains(t, text, "model: inherited", "Sub-agent should not inherit an unsupported tier-specific model")