[BOOK-250] refactor: 빈 isbn이 대응 로직 추가

- LazyColumn item key를 title-isbn13 조합으로 변경
- BookItem 클릭 시 isbn이 비어 있으면 토스트 메세지로 안내

Author: seoyoon513

core/data/impl/src/main/kotlin/com/ninecraft/booket/core/data/impl/mapper/ResponseToModel.kt

@@ -75,6 +75,7 @@ internal fun BookSummary.toModel(): BookSummaryModel {
         coverImageUrl = coverImageUrl,
         link = link,
         userBookStatus = userBookStatus,
+        key = "$title-$isbn13",
     )
 }
 

core/model/src/main/kotlin/com/ninecraft/booket/core/model/BookSearchModel.kt

@@ -26,4 +26,5 @@ data class BookSummaryModel(
     val coverImageUrl: String = "",
     val link: String = "",
     val userBookStatus: String = "",
+    val key: String = "",
 )

feature/search/src/main/kotlin/com/ninecraft/booket/feature/search/book/BookSearchPresenter.kt

@@ -40,7 +40,6 @@ class BookSearchPresenter @AssistedInject constructor(
     private val repository: BookRepository,
 ) : Presenter<BookSearchUiState> {
     companion object {
-        private const val PAGE_SIZE = 20
         private const val START_INDEX = 1
     }
 
@@ -185,7 +184,12 @@ class BookSearchPresenter @AssistedInject constructor(
 
                 is BookSearchUiEvent.OnBookClick -> {
                     selectedBookIsbn = event.isbn13
-                    isBookRegisterBottomSheetVisible = true
+
+                    if (selectedBookIsbn.isEmpty()) {
+                        sideEffect = BookSearchSideEffect.ShowToast("isbn이 없는 도서는 등록할 수 없습니다")
+                    } else {
+                        isBookRegisterBottomSheetVisible = true
+                    }
                 }
 
                 is BookSearchUiEvent.OnBookRegisterBottomSheetDismiss -> {

feature/search/src/main/kotlin/com/ninecraft/booket/feature/search/book/BookSearchUi.kt

@@ -222,7 +222,7 @@ internal fun SearchContent(
                     ) {
                         items(
                             count = state.books.size,
-                            key = { index -> state.books[index].isbn13 },
+                            key = { index -> state.books[index].key },
                         ) { index ->
                             Column {
                                 BookItem(