fix(chat): 채팅방 입장 시 서버 멤버 정보로 캔 배지 동기화

- ChatRoomActivity에서 getMemberInfo 호출 추가
- 응답 성공 시 SharedPreferenceManager.can/point 갱신 및 헤더 배지 즉시 반영
- 네트워크 실패 시 UI 흐름 방해 없이 조용히 무시 처리

app/src/main/java/kr/co/vividnext/sodalive/chat/talk/room/ChatRoomActivity.kt

@@ -16,6 +16,7 @@ import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.SimpleItemAnimator
 import coil.load
 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.base.SodaDialog
@@ -25,6 +26,7 @@ import kr.co.vividnext.sodalive.common.SharedPreferenceManager
 import kr.co.vividnext.sodalive.databinding.ActivityChatRoomBinding
 import kr.co.vividnext.sodalive.extensions.dpToPx
 import kr.co.vividnext.sodalive.extensions.moneyFormat
+import kr.co.vividnext.sodalive.user.UserRepository
 import org.koin.android.ext.android.inject
 import java.util.Locale
 
@@ -38,6 +40,7 @@ class ChatRoomActivity : BaseActivity<ActivityChatRoomBinding>(
 
     // Repository 주입 (7.1 초기 데이터 로딩)
     private val chatRepository: ChatRepository by inject()
+    private val userRepository: UserRepository by inject()
 
     // 5.2 무한 스크롤/자동 스크롤 상태
     private val items: MutableList<ChatListItem> = mutableListOf()
@@ -76,6 +79,8 @@ class ChatRoomActivity : BaseActivity<ActivityChatRoomBinding>(
         loadInitialMessages()
         // 배경 표시 설정 적용
         applyBackgroundVisibility()
+        // 서버 최신 보유 캔 정보 조회 및 헤더 반영
+        fetchAndBindMemberInfo()
     }
 
     @SuppressLint("SetTextI18n")
@@ -869,6 +874,22 @@ class ChatRoomActivity : BaseActivity<ActivityChatRoomBinding>(
         return if (id > 0) id else null
     }
 
+    private fun fetchAndBindMemberInfo() {
+        val token = "Bearer ${SharedPreferenceManager.token}"
+        val disposable = userRepository.getMemberInfo(token)
+            .subscribeOn(Schedulers.io())
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe({ resp ->
+                val data = if (resp.success) resp.data else null
+                if (data != null) {
+                    SharedPreferenceManager.can = data.can
+                    SharedPreferenceManager.point = data.point
+                    binding.tvCanBadge.text = data.can.moneyFormat()
+                }
+            }, { /* ignore error to avoid blocking chat UI */ })
+        compositeDisposable.add(disposable)
+    }
+
     private fun clearLocalPrefsForRoom(roomId: Long) {
         val keys = listOf(
             "chat_bg_visible_room_$roomId",