Update app.py

app.py

@@ -32,7 +32,7 @@ scheduler = CommitScheduler(
 def save_json(role: str, content: str) -> None:
     with scheduler.lock:
         with JSON_DATASET_PATH.open("a") as f:
-            json.dump({"role": role, "content": content, "datetime": datetime.now().isoformat()}, f)
+            json.dump({"role": role, "content": content, "datetime": datetime.now().isoformat()}, f, ensure_ascii=False)
             f.write("\n")