feat: add PostgreSQL web installation wizard

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

@@ -8,7 +8,6 @@ import com.kaidi.oa.repository.TaxFilingRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -26,7 +25,7 @@ import java.time.temporal.ChronoUnit;
  *
  * @Order(215) 在既有 FinDeptSeeder(@Order 12)、BranchFinDemoSeeder(@Order 15) 之后。
  */
-@Component
+@DemoSeed
 @Order(215)
 public class FinDeptGapSeeder implements ApplicationRunner {