Update app.py

app.py

@@ -13,7 +13,7 @@ CORS(app, origins=["http://127.0.0.1:3000", "http://localhost:3000", "https://ra
 # --- Configuration ---
 INDEX_FILE = "index.faiss"
 MAP_FILE = "index_to_metadata.pkl"
-EMBEDDING_MODEL = 'all-MiniLM-L6-v2'
+EMBEDDING_MODEL = 'all-mpnet-base-v2'
 # Corrected path joining for model_data_json - relative to app.py location
 MODEL_DATA_DIR = os.path.join(os.path.dirname(__file__), 'model_data_json')
 # ---