Update config.py

config.py

@@ -2,7 +2,7 @@ import os
 
 class Config:
     SECRET_KEY = os.getenv('SECRET_KEY', 'your-secret-key')
-    SQLALCHEMY_DATABASE_URI = os.getenv('DATABASE_URL', 'sqlite:////tmp/app.db')  # Use /tmp for writable directory
+    SQLALCHEMY_DATABASE_URI = os.getenv('DATABASE_URL', 'sqlite:////tmp/app.db')
     SQLALCHEMY_TRACK_MODIFICATIONS = False
     CELERY_BROKER_URL = os.getenv('CELERY_BROKER_URL', 'redis://localhost:6379/0')
     CELERY_RESULT_BACKEND = os.getenv('CELERY_RESULT_BACKEND', 'redis://localhost:6379/0')