feat(image): 添加打印机默认水印操作器并优化图片处理逻辑- 新增 PrinterDefaultWatermarkOperator 实现自定义水印处理

- 在 ImageWatermarkOperatorEnum 中添加 PRINTER_DEFAULT 类型
- 更新 ImageWatermarkFactory 以支持新的水印操作器
- 调整日期格式为 yyyy.MM.dd 用于打印场景
-优化 ImageUtils 中的图片旋转逻辑，仅支持270度旋转
- 移除对90度旋转的支持以简化处理流程

src/main/java/com/ycwl/basic/utils/ImageUtils.java

@@ -287,10 +287,9 @@ public class ImageUtils {
         best.rotationDegrees = 0;
         best.pixelsLost = Integer.MAX_VALUE;
 
-        // 测试三种情况: 不旋转、旋转90度、旋转270度
+        // 测试两种情况: 不旋转、旋转270度
         int[][] scenarios = {
             {0, srcWidth, srcHeight},           // 不旋转
-            {90, srcHeight, srcWidth},          // 旋转90度
             {270, srcHeight, srcWidth}          // 旋转270度
         };
 
@@ -331,35 +330,28 @@ public class ImageUtils {
             return source;
         }
 
+        if (degrees != 270) {
+            throw new IllegalArgumentException("仅支持270度旋转");
+        }
+
         int width = source.getWidth();
         int height = source.getHeight();
-        
-        // 90度和270度会交换宽高
-        BufferedImage rotated;
+
+        // 270度会交换宽高
+        BufferedImage rotated = new BufferedImage(height, width, source.getType());
         Graphics2D g2d = null;
-        
+
         try {
-            if (degrees == 90 || degrees == 270) {
-                rotated = new BufferedImage(height, width, source.getType());
-                g2d = rotated.createGraphics();
-                
-                AffineTransform transform = new AffineTransform();
-                if (degrees == 90) {
-                    transform.translate(height / 2.0, width / 2.0);
-                    transform.rotate(Math.PI / 2);
-                    transform.translate(-width / 2.0, -height / 2.0);
-                } else { // 270度
-                    transform.translate(height / 2.0, width / 2.0);
-                    transform.rotate(-Math.PI / 2);
-                    transform.translate(-width / 2.0, -height / 2.0);
-                }
-                
-                g2d.setTransform(transform);
-                g2d.drawImage(source, 0, 0, null);
-            } else {
-                throw new IllegalArgumentException("仅支持90度和270度旋转");
-            }
-            
+            g2d = rotated.createGraphics();
+
+            AffineTransform transform = new AffineTransform();
+            transform.translate(height / 2.0, width / 2.0);
+            transform.rotate(-Math.PI / 2);
+            transform.translate(-width / 2.0, -height / 2.0);
+
+            g2d.setTransform(transform);
+            g2d.drawImage(source, 0, 0, null);
+
             return rotated;
         } finally {
             if (g2d != null) {