feat(character-gallery): 갤러리 탭 UI/페이징 및 API 연동, DI 적용

- API: CharacterApi에 이미지 리스트 API 추가(characterId, page, size)
- VM: 페이징(loadInitial/loadNext), 요청 중복 방지, 마지막 페이지 판단, 누적 리스트 관리
- UI: ProgressBar(배경 #37474F/진행 #3BB9F1, radius 999dp, 비활성) + 좌/우 텍스트 구성
- Grid 3열 + 2dp 간격, item 4:5 비율, 잠금/구매 버튼 UI 적용
- UX: tv_ratio_right에서 ownedCount만 #FDD453로 강조(white 대비)

app/src/main/java/kr/co/vividnext/sodalive/di/AppDI.kt

@@ -71,6 +71,8 @@ import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentApi
 import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentRepository
 import kr.co.vividnext.sodalive.chat.character.detail.detail.CharacterDetailRepository
 import kr.co.vividnext.sodalive.chat.character.detail.detail.CharacterDetailViewModel
+import kr.co.vividnext.sodalive.chat.character.detail.gallery.CharacterGalleryRepository
+import kr.co.vividnext.sodalive.chat.character.detail.gallery.CharacterGalleryViewModel
 import kr.co.vividnext.sodalive.chat.talk.TalkApi
 import kr.co.vividnext.sodalive.chat.talk.TalkTabRepository
 import kr.co.vividnext.sodalive.chat.talk.TalkTabViewModel
@@ -358,6 +360,7 @@ class AppDI(private val context: Context, isDebugMode: Boolean) {
         viewModel { HomeViewModel(get(), get()) }
         viewModel { CharacterTabViewModel(get()) }
         viewModel { CharacterDetailViewModel(get()) }
+        viewModel { CharacterGalleryViewModel(get()) }
         viewModel { TalkTabViewModel(get()) }
         viewModel { kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentListViewModel(get()) }
         viewModel { kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentReplyViewModel(get()) }
@@ -407,6 +410,7 @@ class AppDI(private val context: Context, isDebugMode: Boolean) {
         factory { HomeRepository(get()) }
         factory { CharacterTabRepository(get()) }
         factory { CharacterDetailRepository(get(), get()) }
+        factory { CharacterGalleryRepository(get()) }
         factory { TalkTabRepository(get()) }
         factory { CharacterCommentRepository(get()) }
     }