新增PDF生成并发设置

backend/app/db/init_db.py

@@ -4,6 +4,7 @@ from app.core.security import hash_password
 from app.db.base import Base
 from app.db.session import engine
 from app.models import AdminUser, ProjectCourse, Role
+from app.services.system_settings import ensure_default_settings
 
 
 def create_tables() -> None:
@@ -47,4 +48,5 @@ def seed_defaults(db: Session, admin_username: str, admin_password: str) -> None
                 role_code="system_admin",
             )
         )
+    ensure_default_settings(db)
     db.commit()