Update config.yaml

config.yaml

@@ -1,3 +1,6 @@
 mcp_servers:
   web_search: http://localhost:3000
-  pubmed: http://localhost:3001
+  pubmed:   http://localhost:3001
+  chroma:   http://localhost:3002
+  python_run: http://localhost:3003
+db_url: sqlite:///embeddings.db