feat: queue-based graph engine

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/tests/test_containers_integration_tests/conftest.py

@@ -24,7 +24,7 @@ from testcontainers.postgres import PostgresContainer
 from testcontainers.redis import RedisContainer
 
 from app_factory import create_app
-from models import db
+from extensions.ext_database import db
 
 # Configure logging for test containers
 logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s")