Add output cleanup policy

app/__init__.py

@@ -5,6 +5,7 @@ from werkzeug.exceptions import RequestEntityTooLarge
 
 from app.config import Config
 from app.routes import main_blueprint
+from app.services.storage import cleanup_expired_outputs
 
 
 def _format_size_limit(size_limit_bytes: int) -> str:
@@ -27,6 +28,12 @@ def create_app(config_class: type[Config] = Config) -> Flask:
     app.config["OUTPUT_DIRECTORY"] = output_dir
     output_dir.mkdir(parents=True, exist_ok=True)
 
+    if app.config.get("CLEANUP_ON_STARTUP", False):
+        cleanup_expired_outputs(
+            output_dir=output_dir,
+            retention_hours=app.config.get("OUTPUT_RETENTION_HOURS", 24),
+        )
+
     app.register_blueprint(main_blueprint)
 
     @app.errorhandler(RequestEntityTooLarge)