feat: refactor logs to parse as a single log line each and filter out 404s from sentry (#5242)

* add multiline log auto detect

* implement logger.exception()

* filter out 404

* remove potentially problematic changes

letta/utils.py

@@ -1367,7 +1367,7 @@ def fire_and_forget(coro, task_name: Optional[str] = None, error_callback: Optio
             t.result()  # this re-raises exceptions from the task
         except Exception as e:
             task_desc = f"Background task {task_name}" if task_name else "Background task"
-            logger.error(f"{task_desc} failed: {str(e)}\n{traceback.format_exc()}")
+            logger.exception(f"{task_desc} failed: {str(e)}")
 
             if error_callback:
                 try: