Update app.py

app.py

@@ -16,7 +16,7 @@ class Base(DeclarativeBase):
     pass
 
 # ✅ Use writable instance_path to avoid PermissionError
-app = Flask(__name__, instance_path=os.path.join(os.getcwd(), 'instance'))
+app = Flask(__name__, instance_path='/tmp/instance')
 app.secret_key = os.environ.get("SESSION_SECRET", os.urandom(24).hex())
 
 # Database config