Fix get_or_create_working_memory to unpack tuple return value

The agent-memory-client returns a tuple (WorkingMemory, bool) where the bool indicates if the memory was newly created. Our wrapper was returning the tuple directly, causing AttributeError when notebooks tried to access working_memory.messages. Now we unpack the tuple and return just the WorkingMemory object.

python-recipes/context-engineering/reference-agent/redis_context_course/memory_client.py

@@ -99,12 +99,14 @@ async def get_or_create_working_memory(
  Returns:
  WorkingMemory object (existing or newly created)
  """
- return await self.client.get_or_create_working_memory(
+ # The client returns a tuple (WorkingMemory, bool) where bool indicates if it was created
+ working_memory, _ = await self.client.get_or_create_working_memory(
  session_id=session_id,
  user_id=self.user_id,
  namespace=self.namespace,
  model_name=model_name
  )
+ return working_memory
 
  async def save_working_memory(
  self,