feat: add PostgreSQL web installation wizard

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

@@ -10,7 +10,6 @@ import com.kaidi.oa.repository.WwMsdsFileRepository;
 import com.kaidi.oa.repository.WwSamplingTaskRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -24,7 +23,7 @@ import java.time.Instant;
  *  4. WwSamplingTask：废水采样任务演示数据（覆盖不同状态和超标场景，供 Gap-11 桥接演示）
  */
 @Order(9)
-@Component
+@DemoSeed
 public class WwOpsSeeder implements CommandLineRunner {
 
     private final WwMsdsFileRepository msdsRepo;