优化结构

internal/biz/system/authority.go

@@ -5,6 +5,11 @@ import (
 	"time"
 )
 
+// SuperAdminAuthorityID is the seeded super-administrator role created by the
+// bootstrap data in internal/data/system/seed.go. It is the fallback authority
+// for new users and the recipient group for system-wide alerts.
+const SuperAdminAuthorityID uint = 888
+
 type AuthorityAccessRepo interface {
 	CreateAuthority(context.Context, *Authority) error
 	CopyAuthority(context.Context, uint, *Authority) error