[devin-ai-integration]

Summary

The len(actions) > 1 branch in _parse_response (AgentlabAction.convert_multiactions_to_agentlab_action_format) was only exercised by test_multi_action_tool_calls, which is @pytest.mark.pricy and skipped in CI, so a regression in parallel tool-call handling could drop or mis-join actions unnoticed.

Adds four non-pricy tests to tests/llm/test_response_api.py:

• test_convert_multiactions_to_agentlab_action_format: [] -> None, single action passthrough, two actions joined with \n.
• test_openai_chat_completion_model_parse_multi_action, test_openai_response_model_parse_multi_action, test_claude_response_model_parse_multi_action: mocked responses with two tool calls, asserting parsed.action == "get_weather(location='Paris')\nget_weather(location='Delhi')" and len(tool_calls) == 2.

create_mock_anthropic_response now accepts a list for tool_use (single dict still works):

tool_uses = tool_use if isinstance(tool_use, list) else [tool_use]
for tu in tool_uses: ...

No source changes.

Devin-Org: engineering

Link to Devin session: https://app.devin.ai/sessions/5450aa73dd284d88ace11bfa269b8fe9
Open in Devin Desktop: https://app.devin.ai/desktop/session/5450aa73dd284d88ace11bfa269b8fe9?variant=devin

[devin-ai-integration]

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