fix: ImageBlurUtil.kt

- 블러 적용 범위 radius 10 -> 50

src/main/kotlin/kr/co/vividnext/sodalive/admin/chat/character/image/AdminCharacterImageController.kt

@@ -11,6 +11,7 @@ import kr.co.vividnext.sodalive.aws.s3.S3Uploader
 import kr.co.vividnext.sodalive.chat.character.image.CharacterImageService
 import kr.co.vividnext.sodalive.common.ApiResponse
 import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.utils.ImageBlurUtil
 import kr.co.vividnext.sodalive.utils.generateFileName
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.security.access.prepost.PreAuthorize
@@ -141,7 +142,7 @@ class AdminCharacterImageController(
             val bytes = image.bytes
             val bimg = javax.imageio.ImageIO.read(java.io.ByteArrayInputStream(bytes))
                 ?: throw SodaException("이미지 포맷을 인식할 수 없습니다.")
-            val blurred = kr.co.vividnext.sodalive.utils.ImageBlurUtil.blur(bimg, 12)
+            val blurred = ImageBlurUtil.blur(bimg)
 
             // PNG로 저장(알파 유지), JPEG 업로드가 필요하면 포맷 변경 가능
             val baos = java.io.ByteArrayOutputStream()