feat: update memory visualisation to improve debugging

app.py

@@ -121,7 +121,7 @@ with chat_column:
         f"""
     Used {st.session_state.token_count} tokens \n
     Debug Langchain conversation: 
-    {st.session_state.conversation.memory.buffer}
+    {st.session_state.history}
     """
     )
 

message.py

@@ -11,3 +11,6 @@ class Message:
     origin: Literal["human", "ai"]
     message: str
     documents: Optional[List[Document]] = None
+
+    def __repr__(self) -> str:
+        return f"Message(origin={self.origin}, message={self.message})"