refactor(printer): 优化水印配置构建逻辑

- 将 WatermarkConfig 构建过程拆分为条件判断分支
- 针对 IPC 图像源增加特殊处理逻辑
- 统一构建器模式的调用流程
- 提高代码可读性和维护性
- 保持原有功能不变的情况下优化结构

src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java

@@ -1087,7 +1087,7 @@ public class PrinterServiceImpl implements PrinterService {
         String printWatermarkPUrl = scenicConfig.getString("print_watermark_p_url", null);
         String printWatermarkLUrl = scenicConfig.getString("print_watermark_l_url", null);
 
-        return WatermarkConfig.builder()
+        WatermarkConfig.WatermarkConfigBuilder builder = WatermarkConfig.builder()
                 .watermarkType(watermarkType)
                 .scenicText(scenicText)
                 .dateFormat(dateFormat)
@@ -1095,9 +1095,14 @@ public class PrinterServiceImpl implements PrinterService {
                 .storageAdapter(StorageFactory.use())
                 .edgeEnabled(true)
                 .qrcodeFile(qrCodeFile)
-                .scale(scale)
-                .printWatermarkPUrlList(Collections.singletonList(printWatermarkPUrl))
-                .printWatermarkLUrlList(Collections.singletonList(printWatermarkLUrl))
+                .scale(scale);
+        if (context.getSource() == ImageSource.IPC) {
+            return builder
+                    .printWatermarkPUrlList(Collections.singletonList(printWatermarkPUrl))
+                    .printWatermarkLUrlList(Collections.singletonList(printWatermarkLUrl))
+                    .build();
+        }
+        return builder
                 .build();
     }