feat: add page-based verification guide

backend/app/commands/seed/seed.go

@@ -84,6 +84,7 @@ func Serve(cmd *cobra.Command, args []string) error {
 		// Superadmin
 		superAdmin := &models.User{
 			Username: "superadmin",
+			Password: "superadmin123",
 			Phone:    "13800009999",
 			Nickname: "平台管理员",
 			Avatar:   "https://api.dicebear.com/7.x/avataaars/svg?seed=Admin",
@@ -95,6 +96,12 @@ func Serve(cmd *cobra.Command, args []string) error {
 			fmt.Printf("Create superadmin failed: %v\n", err)
 			superAdmin, _ = models.UserQuery.WithContext(ctx).Where(models.UserQuery.Username.Eq("superadmin")).First()
 		}
+		if superAdmin != nil && superAdmin.Password == "" {
+			superAdmin.Password = "superadmin123"
+			if _, err := superAdmin.Update(ctx); err != nil {
+				fmt.Printf("Update superadmin password failed: %v\n", err)
+			}
+		}
 
 		// 2. Tenant
 		tenant := &models.Tenant{