Fix: añadir referer a avisos de visitas

main.py

@@ -703,7 +703,8 @@ async def home(request: Request):
             if any(b.lower() in ua.lower() for b in ignorar):
                 pass  # No avisar
             else:
-                avisar_telegram(f"👤 <b>Visita a landing</b>\n🌐 IP: {ip}\n📱 {ua}")
+                referer = request.headers.get("referer", "directo/sin referer")
+                avisar_telegram(f"👤 <b>Visita a landing</b>\n🌐 IP: {ip}\n📱 {ua}\n🔗 Viene de: {referer}")
     except: pass
     return VENTAS_HTML