Create an abstract MemoryProviderSingleton class. Pass config instead of instantiating a new one where used.

scripts/config.py

@@ -1,3 +1,4 @@
+import abc
 import os
 import openai
 from dotenv import load_dotenv
@@ -5,7 +6,7 @@ from dotenv import load_dotenv
 load_dotenv()
 
 
-class Singleton(type):
+class Singleton(abc.ABCMeta, type):
     """
     Singleton metaclass for ensuring only one instance of a class.
     """
@@ -20,6 +21,10 @@ class Singleton(type):
         return cls._instances[cls]
 
 
+class AbstractSingleton(abc.ABC, metaclass=Singleton):
+    pass
+
+
 class Config(metaclass=Singleton):
     """
     Configuration class to store the state of bools for different scripts access.