🐛 fix(loading.py): replace spaces with underscores in tool names to improve consistency and avoid issues

🐛 fix(base.py): catch and log exceptions when fixing memory inputs to prevent crashes
🐛 fix(process.py): check if memory_key attribute exists before accessing it to prevent AttributeError
🐛 fix(memories.py): hide memory_key field for ConversationEntityMemory to improve user experience