Update app.py

app.py

@@ -9,6 +9,10 @@ from validate import TransactionData  # Shared schema
 
 app = FastAPI()
 
+@app.get("/")
+def root():
+    return {"message": "LogReg FastAPI is up. Use /docs for API UI."}
+
 # Expose APIs
 app.add_api_route("/train", train_model, methods=["POST"])
 app.add_api_route("/predict", predict, methods=["POST"])