Update app.py

app.py

@@ -1,4 +1,19 @@
 import streamlit as st
+import socket
+
+# --- NETWORK FIX: FORCE IPv4 (Must be at the top) ---
+# This forces the app to use standard internet (IPv4) instead of IPv6
+# which fixes the "[Errno -5] No address associated with hostname" error.
+try:
+    _old_getaddrinfo = socket.getaddrinfo
+    def _new_getaddrinfo(*args, **kwargs):
+        responses = _old_getaddrinfo(*args, **kwargs)
+        return [r for r in responses if r[0] == socket.AF_INET]
+    socket.getaddrinfo = _new_getaddrinfo
+except:
+    pass
+# ----------------------------------------------------
+
 import yt_dlp
 import os
 import time
@@ -8,6 +23,8 @@ import re
 from bs4 import BeautifulSoup
 import markdown
 
+# ... rest of your code ...
+
 # --- PAGE CONFIG ---
 st.set_page_config(
     page_title="Lexical Tools",