update app.py

app.py

@@ -1,5 +1,6 @@
 import torch, os
 import gradio as gr
+from pathlib import Path
 from llama_index.core import VectorStoreIndex, SimpleDirectoryReader, Settings
 from llama_index.core.memory import ChatMemoryBuffer
 from llama_index.llms.huggingface import HuggingFaceLLM
@@ -7,10 +8,10 @@ from llama_index.embeddings.langchain import LangchainEmbedding
 from langchain.embeddings.huggingface import HuggingFaceEmbeddings
 from llama_index.core import PromptTemplate
 
-# ---------- 1. Load menu PDF ----------
-docs = SimpleDirectoryReader(input_files=["cafeoneeleven.pdf"]).load_data()
 
-# ---------- 2. LLM + embeddings ----------
+pdf_files = [str(p) for p in Path(".").glob("*.pdf")]   
+docs = SimpleDirectoryReader(input_files=pdf_files).load_data()
+
 SYSTEM_PROMPT = """
 You are a friendly café assistant for Café Eleven. Your job is to:
 1. Greet the customer warmly