fix: use TestClient as context manager to trigger lifespan

tests/test_agent.py

@@ -32,7 +32,7 @@ class TestAgentConstruction:
 
         agent = Agent(model=mock_model)
 
-        assert agent.config.max_iterations == 10
+        assert agent.config.max_iterations == 200
         assert "helpful assistant" in agent.config.system_prompt
         assert agent.tools == []
 

tests/test_api.py

@@ -5,9 +5,8 @@ from src.naliiabotapi.main import app
 
 @pytest.fixture
 def client():
-    client = TestClient(app)
-
-    return client
+    with TestClient(app) as client:
+        yield client
 
 
 def test_root(client):