feat(chat): 채팅방 상단 캔 배지 및 더보기 전체화면 다이얼로그 추가

- 헤더 우측에 캔 배지(tv_can_badge)와 더보기(iv_more) 추가
- 캔 배지 스타일 적용(배경 #263238, 텍스트 white, v5/h8 패딩, can 아이콘)
- 더보기 클릭 시 전체화면 다이얼로그 표시(플레이스홀더 UI)

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

@@ -22,6 +22,7 @@ import kr.co.vividnext.sodalive.chat.character.detail.detail.CharacterType
 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 org.koin.android.ext.android.inject
 
 class ChatRoomActivity : BaseActivity<ActivityChatRoomBinding>(
@@ -73,6 +74,13 @@ class ChatRoomActivity : BaseActivity<ActivityChatRoomBinding>(
         // 뒤로가기 버튼 동작
         binding.ivBack.setOnClickListener { finish() }
 
+        binding.tvCanBadge.text = SharedPreferenceManager.can.moneyFormat()
+
+        // 더보기 클릭 시 전체화면 다이얼로그 표시
+        binding.ivMore.setOnClickListener {
+            ChatRoomMoreDialogFragment().show(supportFragmentManager, "ChatRoomMoreDialog")
+        }
+
         // 5.3: characterInfo가 있으면 헤더 바인딩, 없으면 기본 플레이스홀더 유지
         characterInfo?.let { bindHeader(it) } ?: run {
             // 기본값: 이름 숨김 또는 플레이스 홀더 표시

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

@@ -0,0 +1,29 @@
+package kr.co.vividnext.sodalive.chat.talk.room
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.DialogFragment
+import kr.co.vividnext.sodalive.R
+
+/**
+ * 채팅방 우측 상단 더보기 버튼 클릭 시 표시되는 전체화면 다이얼로그.
+ * 내용은 추후 구성 예정이며 현재는 플레이스홀더 UI만 표시합니다.
+ */
+class ChatRoomMoreDialogFragment : DialogFragment() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        // 기본 전체 화면 테마 사용 (타이틀 없음, 전체화면)
+        setStyle(STYLE_NO_TITLE, android.R.style.Theme_Black_NoTitleBar_Fullscreen)
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.fragment_chat_room_more_dialog, container, false)
+    }
+}

app/src/main/res/drawable/bg_can_badge.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#263238" />
+    <corners android:radius="30dp" />
+</shape>

app/src/main/res/layout/activity_chat_room.xml

@@ -34,10 +34,10 @@
         android:id="@+id/header_container"
         android:layout_width="0dp"
         android:layout_height="60dp"
-        android:paddingTop="4dp"
         android:background="@android:color/transparent"
         android:paddingHorizontal="16dp"
         android:paddingVertical="8dp"
+        android:paddingTop="4dp"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent">
@@ -69,7 +69,7 @@
             android:layout_marginStart="12dp"
             android:orientation="vertical"
             app:layout_constraintBottom_toBottomOf="@+id/iv_profile"
-            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/ll_can_badge"
             app:layout_constraintStart_toEndOf="@id/iv_profile"
             app:layout_constraintTop_toTopOf="@id/iv_profile">
 
@@ -98,11 +98,55 @@
                 android:textColor="#FFFFFFFF"
                 android:textSize="10sp"
                 app:layout_constraintBottom_toBottomOf="@id/iv_profile"
-                app:layout_constraintEnd_toEndOf="parent"
                 tools:ignore="SmallSp"
                 tools:text="Clone" />
         </LinearLayout>
 
+        <!-- 캔 배지 -->
+        <LinearLayout
+            android:id="@+id/ll_can_badge"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="10dp"
+            android:background="@drawable/bg_can_badge"
+            android:gravity="center"
+            android:orientation="horizontal"
+            android:paddingHorizontal="10dp"
+            android:paddingVertical="5dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/iv_more"
+            app:layout_constraintTop_toTopOf="parent">
+
+            <ImageView
+                android:layout_width="20dp"
+                android:layout_height="20dp"
+                android:layout_marginEnd="4dp"
+                android:contentDescription="@null"
+                android:src="@drawable/ic_can" />
+
+            <TextView
+                android:id="@+id/tv_can_badge"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:fontFamily="@font/pretendard_regular"
+                android:gravity="center"
+                android:textColor="#FFFFFFFF"
+                android:textSize="16sp"
+                tools:text="123,456" />
+
+        </LinearLayout>
+
+        <!-- 더보기 버튼 -->
+        <ImageView
+            android:id="@+id/iv_more"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:contentDescription="@null"
+            android:src="@drawable/ic_seemore_vertical_white"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
     </androidx.constraintlayout.widget.ConstraintLayout>
 
     <!-- 안내 메시지 영역 -->

app/src/main/res/layout/fragment_chat_room_more_dialog.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#CC000000">
+
+    <TextView
+        android:id="@+id/tv_placeholder"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="준비중"
+        android:textColor="@android:color/white"
+        android:textSize="18sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>