feat(ciayn_agent.py): pass config to CiaynAgent for improved functionality
fix(ciayn_agent.py): handle tool execution errors more gracefully with msg_list
feat(fallback_handler.py): enhance handle_failure method to utilize msg_list for better context
feat(fallback_handler.py): implement init_msg_list to manage message history effectively
test(test_fallback_handler.py): add unit tests for init_msg_list to ensure correct behavior