feat(图像处理): 修复黑白压缩丢失附加信息

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/tdewolff/canvas v0.0.0-20260923214215-09804640d00c
 	github.com/xiaoqidun/j2kgo v0.0.0-20261011021706-cedb3037ff6e
 	github.com/xiaoqidun/jbig2 v1.1.4
-	github.com/xiaoqidun/pdfgo v0.0.0-20261011112043-b424d0248fb2
+	github.com/xiaoqidun/pdfgo v0.0.0-20261011113302-5ef97798f3e9
 	golang.org/x/crypto v0.58.0
 	golang.org/x/image v0.47.0
 	golang.org/x/text v0.43.0