032: dead code cleanup — remove sync APIClient, _llm_http, preview_llm_client, fix retry chains

backend/tests/core/test_superset_client_async.py

@@ -35,15 +35,4 @@ async def test_concurrent_superset_calls():
 # #endregion test_concurrent_superset_calls
 
 
-# #region test_sync_superset_client_raises_in_async_context [C:2] [TYPE Function]
-# @BRIEF Verify that creating sync SupersetClient inside async context emits warning/error.
-@pytest.mark.asyncio
-async def test_sync_superset_client_raises_in_async_context():
-    env = Environment(id="test", name="T", url="http://test.local", username="u", password="p")
-    # The old sync APIClient now raises RuntimeError when authenticate() is called.
-    from src.core.utils.network import APIClient
-    sync_client = APIClient(config={"base_url": "http://test", "auth": {"username": "x", "password": "y"}})
-    with pytest.raises(RuntimeError, match="deprecated"):
-        sync_client.authenticate()
-# #endregion test_sync_superset_client_raises_in_async_context
 # #endregion TestSupersetClientAsync