feat(character-detail): 캐릭터 상세

- 탭 UI 추가

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/CharacterDetailActivity.kt

@@ -11,19 +11,19 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import coil.load
 import coil.transform.CircleCropTransformation
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.schedulers.Schedulers
 import kr.co.vividnext.sodalive.R
 import kr.co.vividnext.sodalive.base.BaseActivity
 import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentListBottomSheet
+import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentRepository
 import kr.co.vividnext.sodalive.chat.talk.room.ChatRoomActivity
 import kr.co.vividnext.sodalive.common.LoadingDialog
 import kr.co.vividnext.sodalive.common.SharedPreferenceManager
 import kr.co.vividnext.sodalive.databinding.ActivityCharacterDetailBinding
 import kr.co.vividnext.sodalive.extensions.dpToPx
-import org.koin.androidx.viewmodel.ext.android.viewModel
 import org.koin.android.ext.android.inject
-import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
-import io.reactivex.rxjava3.schedulers.Schedulers
-import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentRepository
+import org.koin.androidx.viewmodel.ext.android.viewModel
 
 class CharacterDetailActivity : BaseActivity<ActivityCharacterDetailBinding>(
     ActivityCharacterDetailBinding::inflate
@@ -68,6 +68,32 @@ class CharacterDetailActivity : BaseActivity<ActivityCharacterDetailBinding>(
         // 뒤로 가기
         binding.detailToolbar.tvBack.setOnClickListener { finish() }
 
+        // 탭 구성: 상세, 갤러리
+        binding.tabLayout.addTab(binding.tabLayout.newTab().setText("상세"))
+        binding.tabLayout.addTab(binding.tabLayout.newTab().setText("갤러리"))
+        binding.tabLayout.addOnTabSelectedListener(object :
+            com.google.android.material.tabs.TabLayout.OnTabSelectedListener {
+            override fun onTabSelected(tab: com.google.android.material.tabs.TabLayout.Tab) {
+                if (tab.position == 0) {
+                    // 상세 탭: 기존 스크롤 화면 표시
+                    binding.scrollViewCharacterDetail.visibility = View.VISIBLE
+                    binding.flContainer.visibility = View.GONE
+                } else {
+                    // 갤러리 탭: 컨테이너 표시 및 갤러리 프래그먼트 로드
+                    binding.scrollViewCharacterDetail.visibility = View.GONE
+                    binding.flContainer.visibility = View.VISIBLE
+                    val fragment =
+                        kr.co.vividnext.sodalive.chat.character.detail.gallery.CharacterGalleryFragment()
+                    supportFragmentManager.beginTransaction()
+                        .replace(R.id.fl_container, fragment)
+                        .commit()
+                }
+            }
+
+            override fun onTabUnselected(tab: com.google.android.material.tabs.TabLayout.Tab) {}
+            override fun onTabReselected(tab: com.google.android.material.tabs.TabLayout.Tab) {}
+        })
+
         // 다른 캐릭터 리스트: 가로 스크롤
         val recyclerView = binding.rvOtherCharacters
         recyclerView.layoutManager = LinearLayoutManager(

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailFragment.kt

@@ -0,0 +1,19 @@
+package kr.co.vividnext.sodalive.chat.character.detail.detail
+
+import android.os.Bundle
+import android.view.View
+import kr.co.vividnext.sodalive.base.BaseFragment
+import kr.co.vividnext.sodalive.databinding.FragmentCharacterDetailBinding
+
+/**
+ * 캐릭터 상세 - 상세 탭
+ * TODO: 기존 CharacterDetailActivity UI 바인딩 로직을 이 Fragment로 점진적으로 이전합니다.
+ */
+class CharacterDetailFragment : BaseFragment<FragmentCharacterDetailBinding>(
+    FragmentCharacterDetailBinding::inflate
+) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        // 추후 상세 UI/로직 반영 예정
+    }
+}

app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/gallery/CharacterGalleryFragment.kt

@@ -0,0 +1,18 @@
+package kr.co.vividnext.sodalive.chat.character.detail.gallery
+
+import android.os.Bundle
+import android.view.View
+import kr.co.vividnext.sodalive.base.BaseFragment
+import kr.co.vividnext.sodalive.databinding.FragmentCharacterGalleryBinding
+
+/**
+ * 캐릭터 상세 - 갤러리 탭 (빈 화면)
+ */
+class CharacterGalleryFragment : BaseFragment<FragmentCharacterGalleryBinding>(
+    FragmentCharacterGalleryBinding::inflate
+) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        // 추후 갤러리 콘텐츠 추가 예정
+    }
+}