change pipeline to batch processing

app.py

@@ -37,7 +37,8 @@ import google.generativeai as genai
 from google.api_core import exceptions as google_exceptions
 
 # gradio
-from gradio_client import Client, handle_file, GradioClient
+from gradio_client import Client, handle_file
+
 
 # pillow
 from PIL import Image
@@ -868,7 +869,7 @@ async def call_sealion_for_translation(prompt: str) -> str:
 
 # --- NLLB HELPER --- #
 
-nllb_client = GradioClient("UNESCO/nllb")
+nllb_client = Client("UNESCO/nllb")
 
 def call_nllb_for_translation(text: str, src_lang: str, tgt_lang: str) -> str:
     """Call UNESCO NLLB model via Gradio Client."""