feat: 初始化零工后端代码

gig-poc/apps/api/app/db/session.py

@@ -7,7 +7,14 @@ from app.core.config import get_settings
 
 
 settings = get_settings()
-engine = create_engine(settings.database_url, future=True, pool_pre_ping=True)
+engine = create_engine(
+    settings.database_url,
+    future=True,
+    pool_pre_ping=True,
+    pool_size=settings.database_pool_size,
+    max_overflow=settings.database_max_overflow,
+    pool_timeout=settings.database_pool_timeout,
+)
 SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, future=True)