test: isolate embedding module state with monkeypatch

Agent-Logs-Url: https://github.com/MemPalace/mempalace/sessions/3213a67a-6871-4bb2-9ae0-23fa11001a22

Co-authored-by: igorls <4753812+igorls@users.noreply.github.com>

tests/test_embedding.py

@@ -4,12 +4,9 @@ import mempalace.embedding as embedding
 
 
 @pytest.fixture(autouse=True)
-def clear_embedding_state():
+def isolate_embedding_state(monkeypatch):
-    embedding._EF_CACHE.clear()
+    monkeypatch.setattr(embedding, "_EF_CACHE", {})
-    embedding._WARNED.clear()
+    monkeypatch.setattr(embedding, "_WARNED", set())
-    yield
-    embedding._EF_CACHE.clear()
-    embedding._WARNED.clear()
 
 
 def test_auto_picks_cuda(monkeypatch):