feat(image): 마이페이지 DownsampledKFImage 적용

- 최근 들은 콘텐츠 수평 리스트 HStack → LazyHStack으로 교체해 프리로딩/메모리 개선

SodaLive/Sources/MyPage/MyPageView.swift

@@ -257,11 +257,11 @@ struct ProfileSectionView: View {
         VStack(spacing: 16) {
             HStack(spacing: 20) {
                 // Profile Image Placeholder
-                KFImage(URL(string: profileUrl))
-                    .cancelOnDisappear(true)
-                    .resizable()
-                    .frame(width: 64, height: 64)
-                    .clipShape(Circle())
+                DownsampledKFImage(
+                    url: URL(string: profileUrl),
+                    size: CGSize(width: 64, height: 64)
+                )
+                .clipShape(Circle())
                 
                 VStack(alignment: .leading) {
                     Text("\(nickname)")
@@ -481,7 +481,7 @@ struct RecentContentSection: View {
             .padding(.horizontal, 24)
             
             ScrollView(.horizontal, showsIndicators: false) {
-                HStack(spacing: 16) {
+                LazyHStack(spacing: 16) {
                     ForEach(0..<recentContents.count, id: \.self) { index in
                         RecentItemView(content: recentContents[index])
                     }
@@ -499,12 +499,11 @@ struct RecentItemView: View {
     var body: some View {
         VStack(spacing: 8) {
             VStack(alignment: .leading, spacing: 0) {
-                KFImage(URL(string: content.coverImageUrl))
-                    .cancelOnDisappear(true)
-                    .resizable()
-                    .scaledToFill()
-                    .frame(width: 160, height: 160, alignment: .top)
-                    .cornerRadius(16)
+                DownsampledKFImage(
+                    url: URL(string: content.coverImageUrl),
+                    size: CGSize(width: 160, height: 160)
+                )
+                .cornerRadius(16)
                 
                 Text(content.title)
                     .font(.custom(Font.preRegular.rawValue, size: 18))