Simplify tool approval chat flow

tests/smoke/test_api_stream_chat.py

@@ -110,9 +110,12 @@ def test_stream_chat_endpoint_executes_tool_before_streaming_answer(tmp_path, mo
 
 def test_continue_stream_executes_approved_tool_and_streams_answer(tmp_path, monkeypatch):
     monkeypatch.setenv("DUCK_DB_PATH", str(tmp_path / "duck.sqlite3"))
+    action_calls = 0
 
     async def fake_chat(self, role, messages, temperature=None, max_output_tokens=None, response_format=None):
+        nonlocal action_calls
         assert role == "action"
+        action_calls += 1
         if any("tool_observations" in message["content"] for message in messages):
             actions = []
         else:
@@ -173,6 +176,7 @@ def test_continue_stream_executes_approved_tool_and_streams_answer(tmp_path, mon
     assert "event: content_delta" in body
     assert "continued after approval" in body
     assert "event: done" in body
+    assert action_calls == 1
     conversation_id = re.search(r'"conversation_id"\s*:\s*"([^"]+)"', initial_body).group(1)
     conversation = client.get(f"/v1/conversations/{conversation_id}").json()
     assert conversation["messages"][-1]["content"] == "continued after approval"