feat: add PostgreSQL web installation wizard

oa-backend/src/main/java/com/kaidi/oa/seed/OrgEnrichmentSeeder.java

@@ -7,7 +7,6 @@ import com.kaidi.oa.repository.SysDeptRepository;
 import com.kaidi.oa.repository.SysUserRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -23,7 +22,7 @@ import java.util.Map;
  * Idempotent + non-destructive: runs after the base seeder, only adds users that are
  * missing (guard on a sentinel login). All accounts use password 123456.
  */
-@Component
+@DemoSeed
 @Order(2)
 public class OrgEnrichmentSeeder implements CommandLineRunner {