test: pin the OpenRouter memo empty in the no-socket test; import hygiene (gate r2 nits)

tests/gateway/test_model_command_async_offload.py

@@ -140,8 +140,6 @@ async def test_picker_path_offloads_list_picker_providers(_isolated_config, monk
     )
 
 
-
-
 @pytest.mark.asyncio
 async def test_picker_path_lists_cache_only_and_probes_only_the_current_custom_endpoint(_isolated_config, monkeypatch):
     """#74003: the chat ``/model`` reply is a read path. The listing must ask for cache-only catalogs

tests/hermes_cli/test_list_picker_providers.py

@@ -17,6 +17,7 @@ network or auth state is required.
 
 import pytest
 from hermes_cli import model_switch
+import hermes_cli.models as models_mod
 import hermes_cli.model_switch_providers as hermes_cli_model_switch_providers
 from hermes_cli import model_switch_providers
 
@@ -246,9 +247,8 @@ def test_non_blocking_listing_opens_no_socket(monkeypatch, tmp_path):
     """#74003: ``non_blocking_catalogs=True`` must not run a single live catalog probe in the calling
     thread — not the per-provider ``/models`` prefetch and not OpenRouter's curated-catalog GET —
     even with several credentialed providers and an empty on-disk cache."""
-    import hermes_cli.models as models_mod
-
     monkeypatch.setenv("HERMES_HOME", str(tmp_path))
+    monkeypatch.setattr(models_mod, "_openrouter_catalog_cache", None)
     for key in ("OPENAI_API_KEY", "ANTHROPIC_API_KEY", "DEEPSEEK_API_KEY", "GROQ_API_KEY",
                 "MISTRAL_API_KEY", "XAI_API_KEY", "OPENROUTER_API_KEY"):
         monkeypatch.setenv(key, "dummy")