Update app.py

app.py

@@ -5,7 +5,12 @@ import requests
 # CONFIG
 # -----------------------------
 SUNO_API_BASE = "https://api.sunoapi.org"
-API_KEY = "YOUR_API_KEY_HERE"  # set via env in real use
+import os
+
+API_KEY = os.getenv("SunoKey")
+
+if not API_KEY:
+    raise RuntimeError("Missing SunoKey environment variable")
 
 HEADERS = {
     "Authorization": f"Bearer {API_KEY}",