Fix ModelConfig attribute access in vectorstore factory

- Handle both dict (for tests with mocked config) and ModelConfig (actual config)
- Fixes AttributeError: 'ModelConfig' object has no attribute 'get'
- Resolves test failures in test_vectorstore_factory_integration.py

Co-authored-by: Andrew Brookins <[email protected]>

Author: claude[bot]

agent_memory_server/vectorstore_factory.py

@@ -46,7 +46,15 @@ def create_embeddings() -> Embeddings:
         An Embeddings instance
     """
     embedding_config = settings.embedding_model_config
-    provider = embedding_config.get("provider", "openai")
+    if embedding_config:
+        # Handle both dict (for tests with mocked config) and ModelConfig (actual config)
+        provider = (
+            embedding_config.get("provider", "openai") 
+            if hasattr(embedding_config, 'get') 
+            else embedding_config.provider
+        )
+    else:
+        provider = "openai"
 
     if provider == "openai":
         try: