Update app.py

app.py

@@ -230,6 +230,6 @@ Answer (clear, student-friendly):
 # -----------------------------------------------------------
 if __name__ == "__main__":
     import uvicorn
-    port = int(os.environ.get("PORT", 8080))
+    port = int(os.environ.get("PORT", 7860))
     print(f"🚀 Starting IBS Assistant at http://0.0.0.0:{port}")
     uvicorn.run("app:app", host="0.0.0.0", port=port, reload=False)