清理全局角色残留并修复项目权限判断

backend/tests/test_protected_admin.py

@@ -1,7 +1,7 @@
 import pytest
 
 from app.crud import user as user_crud
-from app.models.user import UserRole, UserStatus
+from app.models.user import UserStatus
 
 
 class _ScalarResult:
@@ -37,6 +37,6 @@ async def test_ensure_admin_exists_creates_protected_admin():
     assert len(session.added) == 1
     admin = session.added[0]
     assert admin.email == "admin@huapont.cn"
-    assert admin.role == UserRole.ADMIN
+    assert admin.is_admin is True
     assert admin.status == UserStatus.ACTIVE
     assert session.commit_count == 1