add admin user logic

src/main/java/ru/soune/nocopy/adminpanel/permission/PermissionChecker.java

@@ -0,0 +1,21 @@
+package ru.soune.nocopy.adminpanel.permission;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import ru.soune.nocopy.adminpanel.entity.AdminUser;
+
+@Component
+@RequiredArgsConstructor
+public class PermissionChecker {
+
+    public boolean isSuperAdmin(AdminUser admin) {
+        if (admin == null || !admin.getIsActive()) return false;
+        return AdminPermission.isSuperAdmin(admin.getPermissions());
+    }
+
+    public void checkSuperAdmin(AdminUser admin) {
+        if (!isSuperAdmin(admin)) {
+            throw new SecurityException("Super admin permission required");
+        }
+    }
+}