fix: prevent timeout stalls and release 1.2.1

tests/unit/agents/test_flash_runner_ledger.py

@@ -636,6 +636,32 @@ async def test_run_no_tool_call_turn_is_nudged_not_terminated(mock_context):
         and any(EXECUTION_RESULT_MARKER in b.get("text", "") for b in m.content)
         for m in turn2_messages
     )
+    assert not any(
+        isinstance(m, AIMessage) and m.content == "thinking only" for m in turn2_messages
+    )
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("attempts", [1, 3])
+async def test_flash_stops_repeated_no_tool_responses(mock_context, monkeypatch, attempts):
+    from artemis.config.settings import settings
+
+    monkeypatch.setattr(settings, "ARTEMIS_FLASH_MAX_NO_PROGRESS_ATTEMPTS", attempts)
+    responses = [AIMessage(content="I will click now.", tool_calls=[]) for _ in range(attempts)]
+    with (
+        patch("artemis.controllers.unified_controller.get_driver"),
+        patch(
+            "artemis.agents.flash.runner.capture_screenshot_and_parse_ui",
+            AsyncMock(return_value=_INITIAL_OBSERVATION),
+        ),
+    ):
+        runner = _make_runner(mock_context, responses, max_turns=0)
+        result = await runner.run(State(initial_goal="Open Settings"))
+
+    assert result["status"] == "failed"
+    assert f"连续 {attempts} 次未调用工具" in result["explanation"]
+    assert runner._invoke_model.await_count == attempts
+    runner.executor.execute.assert_not_awaited()
 
 
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