feat(character-image): 캐릭터 이미지 리스트 첫 칸에 프로필 이미지 포함 및 페이징 보정

사용자 경험 향상을 위해 캐릭터 프로필 이미지를 이미지 리스트의 맨 앞에 노출하도록 변경.

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

@@ -40,30 +40,73 @@ class CharacterImageController(
         if (member.auth == null) throw SodaException("본인인증을 하셔야 합니다.")
 
         val pageSize = if (size <= 0) 20 else minOf(size, 20)
-        val pageable = PageRequest.of(page, pageSize)
-
-        val pageResult = imageService.pageActiveByCharacter(characterId, pageable)
-        val totalCount = pageResult.totalElements
 
+        // 전체 활성 이미지 수(프로필 제외) 파악을 위해 최소 페이지 조회
+        val totalActiveElements = imageService.pageActiveByCharacter(characterId, PageRequest.of(0, 1)).totalElements
         val ownedCount = imageService.countOwnedActiveByCharacterForMember(characterId, member.id!!)
 
-        val expiration = 5L * 60L * 1000L // 5분
-        val items = pageResult.content.map { img ->
-            val isOwned = (img.imagePriceCan == 0L) || imageService.isOwnedImageByMember(img.id!!, member.id!!)
-            val url = if (isOwned) {
-                imageCloudFront.generateSignedURL(img.imagePath, expiration)
-            } else {
-                "$imageHost/${img.blurImagePath}"
-            }
-            CharacterImageListItemResponse(
-                id = img.id!!,
-                imageUrl = url,
-                isOwned = isOwned,
-                imagePriceCan = img.imagePriceCan,
-                sortOrder = img.sortOrder
+        val totalCount = totalActiveElements + 1 // 프로필 포함
+
+        val startIndex = page * pageSize
+        if (startIndex >= totalCount) {
+            return@run ApiResponse.ok(
+                CharacterImageListResponse(
+                    totalCount = totalCount,
+                    ownedCount = ownedCount,
+                    items = emptyList()
+                )
             )
         }
 
+        val endExclusive = kotlin.math.min(startIndex + pageSize, totalCount.toInt())
+        val pageLength = endExclusive - startIndex
+
+        // 프로필 이미지 구성(맨 앞)
+        val profilePath = imageService.getCharacterImagePath(characterId) ?: "profile/default-profile.png"
+        val profileItem = CharacterImageListItemResponse(
+            id = 0L,
+            imageUrl = "$imageHost/$profilePath",
+            isOwned = true,
+            imagePriceCan = 0L,
+            sortOrder = 0
+        )
+
+        // 활성 이미지 offset/limit 계산 (결합 리스트 [프로필] + activeImages)
+        val activeOffset = if (startIndex == 0) 0L else (startIndex - 1).toLong()
+        val activeLimit = if (startIndex == 0) (pageLength - 1).toLong() else pageLength.toLong()
+
+        val expiration = 5L * 60L * 1000L // 5분
+        val activeImages = if (activeLimit > 0) {
+            imageService.pageActiveByCharacterOffset(
+                characterId,
+                activeOffset,
+                activeLimit
+            )
+        } else {
+            emptyList()
+        }
+
+        val items = buildList {
+            if (startIndex == 0 && pageLength > 0) add(profileItem)
+            activeImages.forEach { img ->
+                val isOwned = (img.imagePriceCan == 0L) || imageService.isOwnedImageByMember(img.id!!, member.id!!)
+                val url = if (isOwned) {
+                    imageCloudFront.generateSignedURL(img.imagePath, expiration)
+                } else {
+                    "$imageHost/${img.blurImagePath}"
+                }
+                add(
+                    CharacterImageListItemResponse(
+                        id = img.id!!,
+                        imageUrl = url,
+                        isOwned = isOwned,
+                        imagePriceCan = img.imagePriceCan,
+                        sortOrder = img.sortOrder
+                    )
+                )
+            }
+        }
+
         ApiResponse.ok(
             CharacterImageListResponse(
                 totalCount = totalCount,

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

@@ -35,6 +35,12 @@ interface CharacterImageQueryRepository {
         offset: Long,
         limit: Long
     ): List<CharacterImage>
+
+    fun findActiveImagesByCharacterPaged(
+        characterId: Long,
+        offset: Long,
+        limit: Long
+    ): List<CharacterImage>
 }
 
 class CharacterImageQueryRepositoryImpl(
@@ -73,4 +79,22 @@ class CharacterImageQueryRepositoryImpl(
             .limit(limit)
             .fetch()
     }
+
+    override fun findActiveImagesByCharacterPaged(
+        characterId: Long,
+        offset: Long,
+        limit: Long
+    ): List<CharacterImage> {
+        val ci = QCharacterImage.characterImage
+        return queryFactory
+            .selectFrom(ci)
+            .where(
+                ci.chatCharacter.id.eq(characterId)
+                    .and(ci.isActive.isTrue)
+            )
+            .orderBy(ci.sortOrder.asc(), ci.id.asc())
+            .offset(offset)
+            .limit(limit)
+            .fetch()
+    }
 }

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

@@ -26,6 +26,16 @@ class CharacterImageService(
         return imageRepository.findByChatCharacterIdAndIsActiveTrueOrderBySortOrderAsc(characterId, pageable)
     }
 
+    // 오프셋/리밋 조회(활성 이미지)
+    fun pageActiveByCharacterOffset(
+        characterId: Long,
+        offset: Long,
+        limit: Long
+    ): List<CharacterImage> {
+        if (limit <= 0L) return emptyList()
+        return imageRepository.findActiveImagesByCharacterPaged(characterId, offset, limit)
+    }
+
     // 구매 이력 + 무료로 계산된 보유 수
     fun countOwnedActiveByCharacterForMember(characterId: Long, memberId: Long): Long {
         val freeCount = imageRepository.countByChatCharacterIdAndIsActiveTrueAndImagePriceCan(characterId, 0L)