test(llama): adapt 3 tests to Result API (doeh cleanup Phase 2.2)

tests/test_llama_provider.py

@@ -26,7 +26,7 @@ def test_send_llama_ollama_backend(monkeypatch: pytest.MonkeyPatch) -> None:
  mock_requests.post.return_value = mock_response
  with patch("src.ai_client._require_warmed", return_value=mock_requests):
   result = ai_client._send_llama("system", "user", ".", None, "", False, None, None, None)
-  assert "hi from ollama" in result
+  assert result.ok and "hi from ollama" in result.data
   called_url = mock_requests.post.call_args.args[0]
   assert called_url == "http://localhost:11434/api/chat"
 
@@ -40,7 +40,7 @@ def test_send_llama_openrouter_backend(monkeypatch: pytest.MonkeyPatch) -> None:
  )
  with patch("src.ai_client._ensure_llama_client", return_value=captured_client) as ensure:
   result = ai_client._send_llama("system", "user", ".", None, "", False, None, None, None)
-  assert result == "hi from openrouter"
+  assert result.ok and result.data == "hi from openrouter"
   assert ensure.called
 
 def test_send_llama_custom_url(monkeypatch: pytest.MonkeyPatch) -> None:
@@ -52,7 +52,7 @@ def test_send_llama_custom_url(monkeypatch: pytest.MonkeyPatch) -> None:
  )
  with patch("src.ai_client._ensure_llama_client", return_value=mock_client):
   result = ai_client._send_llama("system", "user", ".", None, "", False, None, None, None)
-  assert result == "hi from custom"
+  assert result.ok and result.data == "hi from custom"
 
 def test_llama_model_discovery_unions_ollama_and_openrouter() -> None:
  from src.ai_client import _list_llama_models