feat(game): 添加局间结算界面，对接后端settlement状态

- GameState新增currentRound/totalRounds字段
- 解析后端返回的current_round和total_rounds
- 新增结算弹窗：展示每位玩家得分、胡牌标记和排名
- 状态面板显示当前局数信息
- 新增next_round动作，结算后点击"下一局"继续游戏
- 最后一局结算后显示"返回大厅"按钮

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/assets/styles/room.css

@@ -1616,3 +1616,157 @@
     font-size: 18px;
   }
 }
+
+/* ── Settlement Overlay ── */
+.settlement-overlay {
+  position: absolute;
+  inset: 0;
+  z-index: 100;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: rgba(0, 0, 0, 0.65);
+  backdrop-filter: blur(4px);
+  animation: settlement-fade-in 300ms ease-out;
+}
+
+@keyframes settlement-fade-in {
+  from { opacity: 0; }
+  to { opacity: 1; }
+}
+
+.settlement-panel {
+  width: 380px;
+  max-width: 90vw;
+  padding: 28px 24px 20px;
+  border: 1px solid rgba(220, 191, 118, 0.3);
+  border-radius: 16px;
+  background:
+    linear-gradient(180deg, rgba(14, 55, 40, 0.96), rgba(8, 36, 27, 0.98)),
+    radial-gradient(circle at 20% 24%, rgba(237, 214, 157, 0.06), transparent 34%);
+  box-shadow:
+    inset 0 1px 0 rgba(255, 244, 214, 0.08),
+    0 24px 48px rgba(0, 0, 0, 0.4);
+  animation: settlement-panel-pop 300ms ease-out;
+}
+
+@keyframes settlement-panel-pop {
+  from { opacity: 0; transform: scale(0.92) translateY(12px); }
+  to { opacity: 1; transform: scale(1) translateY(0); }
+}
+
+.settlement-title {
+  margin: 0 0 4px;
+  color: #e5c472;
+  font-size: 20px;
+  font-weight: 800;
+  text-align: center;
+  letter-spacing: 1px;
+  text-shadow:
+    -1px 0 rgba(0, 0, 0, 0.38),
+    0 1px rgba(0, 0, 0, 0.38),
+    1px 0 rgba(0, 0, 0, 0.38),
+    0 -1px rgba(0, 0, 0, 0.38);
+}
+
+.settlement-round-info {
+  margin: 0 0 16px;
+  color: rgba(229, 196, 114, 0.6);
+  font-size: 13px;
+  text-align: center;
+  letter-spacing: 0.5px;
+}
+
+.settlement-list {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  margin-bottom: 20px;
+}
+
+.settlement-row {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 10px 14px;
+  border-radius: 10px;
+  background: rgba(255, 255, 255, 0.04);
+  transition: background 150ms;
+}
+
+.settlement-row.is-winner {
+  background: rgba(229, 196, 114, 0.1);
+  border: 1px solid rgba(220, 191, 118, 0.2);
+}
+
+.settlement-row.is-self {
+  box-shadow: inset 0 0 0 1px rgba(229, 196, 114, 0.18);
+}
+
+.settlement-rank {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 24px;
+  height: 24px;
+  border-radius: 50%;
+  background: rgba(255, 255, 255, 0.08);
+  color: rgba(255, 255, 255, 0.7);
+  font-size: 12px;
+  font-weight: 700;
+  flex-shrink: 0;
+}
+
+.settlement-row.is-winner .settlement-rank {
+  background: rgba(229, 196, 114, 0.2);
+  color: #e5c472;
+}
+
+.settlement-name {
+  flex: 1;
+  color: rgba(255, 255, 255, 0.88);
+  font-size: 15px;
+  font-weight: 600;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.settlement-winner-badge {
+  display: inline-block;
+  margin-left: 6px;
+  padding: 1px 6px;
+  border-radius: 4px;
+  background: rgba(229, 196, 114, 0.22);
+  color: #e5c472;
+  font-size: 11px;
+  font-weight: 800;
+  vertical-align: middle;
+}
+
+.settlement-score {
+  font-size: 18px;
+  font-weight: 800;
+  color: rgba(255, 255, 255, 0.7);
+  flex-shrink: 0;
+  min-width: 48px;
+  text-align: right;
+}
+
+.settlement-score.is-positive {
+  color: #5dda6e;
+}
+
+.settlement-score.is-negative {
+  color: #e85d5d;
+}
+
+.settlement-actions {
+  display: flex;
+  justify-content: center;
+  gap: 12px;
+}
+
+.settlement-btn {
+  min-width: 160px;
+}

src/store/gameStore.ts

@@ -53,6 +53,10 @@ export const useGameStore = defineStore('game', {
         winners: [],
 
         scores: {},
+
+        currentRound: 0,
+
+        totalRounds: 0,
     }),
 
     actions: {

src/types/state/gameState.ts

@@ -33,4 +33,10 @@ export interface GameState {
 
     // 分数（playerId -> score）
     scores: Record<string, number>
+
+    // 当前第几局
+    currentRound: number
+
+    // 总局数
+    totalRounds: number
 }

src/views/ChengduGamePage.vue

@@ -97,6 +97,7 @@ const dingQuePending = ref(false)
 const discardPending = ref(false)
 const claimActionPending = ref(false)
 const turnActionPending = ref(false)
+const nextRoundPending = ref(false)
 const selectedDiscardTileId = ref<number | null>(null)
 let clockTimer: number | null = null
 let discardPendingTimer: number | null = null
@@ -322,6 +323,35 @@ const roomStatusText = computed(() => {
   return map[status] ?? status ?? '--'
 })
 
+const roundText = computed(() => {
+  if (gameStore.totalRounds > 0) {
+    return `${gameStore.currentRound}/${gameStore.totalRounds}`
+  }
+  return ''
+})
+
+const showSettlementOverlay = computed(() => {
+  return gameStore.phase === 'settlement'
+})
+
+const isLastRound = computed(() => {
+  return gameStore.currentRound >= gameStore.totalRounds && gameStore.totalRounds > 0
+})
+
+const settlementPlayers = computed(() => {
+  const players = Object.values(gameStore.players)
+  const winnerSet = new Set(gameStore.winners)
+  return players
+      .map((player) => ({
+        playerId: player.playerId,
+        displayName: player.displayName || `玩家${player.seatIndex + 1}`,
+        score: gameStore.scores[player.playerId] ?? 0,
+        isWinner: winnerSet.has(player.playerId),
+        seatIndex: player.seatIndex,
+      }))
+      .sort((a, b) => b.score - a.score)
+})
+
 const myReadyState = computed(() => {
   return Boolean(myPlayer.value?.isReady)
 })
@@ -1203,6 +1233,14 @@ function handleRoomStateResponse(message: unknown): void {
     ) as Record<string, number>
   }
   gameStore.winners = readStringArray(payload, 'winners')
+  const currentRound = readNumber(payload, 'current_round', 'currentRound')
+  const totalRounds = readNumber(payload, 'total_rounds', 'totalRounds')
+  if (typeof currentRound === 'number') {
+    gameStore.currentRound = currentRound
+  }
+  if (typeof totalRounds === 'number') {
+    gameStore.totalRounds = totalRounds
+  }
   gameStore.pendingClaim = normalizePendingClaim(payload)
   if (!gameStore.pendingClaim) {
     claimActionPending.value = false
@@ -1255,6 +1293,9 @@ function handleRoomStateResponse(message: unknown): void {
   if (phase !== 'waiting') {
     startGamePending.value = false
   }
+  if (phase !== 'settlement') {
+    nextRoundPending.value = false
+  }
   if (currentTurnPlayerId && currentTurnPlayerId !== loggedInUserId.value) {
     markDiscardCompleted()
   }
@@ -1534,6 +1575,14 @@ function handleRoomInfoResponse(message: unknown): void {
     ) as Record<string, number>
   }
   gameStore.winners = readStringArray(gameState ?? {}, 'winners')
+  const infoCurrentRound = readNumber(gameState ?? {}, 'current_round', 'currentRound')
+  const infoTotalRounds = readNumber(gameState ?? {}, 'total_rounds', 'totalRounds')
+  if (typeof infoCurrentRound === 'number') {
+    gameStore.currentRound = infoCurrentRound
+  }
+  if (typeof infoTotalRounds === 'number') {
+    gameStore.totalRounds = infoTotalRounds
+  }
 
   setActiveRoom({
     roomId,
@@ -2465,6 +2514,19 @@ function startGame(): void {
   })
 }
 
+function nextRound(): void {
+  if (nextRoundPending.value) {
+    return
+  }
+
+  nextRoundPending.value = true
+  sendWsMessage({
+    type: 'next_round',
+    roomId: gameStore.roomId,
+    payload: {},
+  })
+}
+
 function chooseDingQue(suit: Tile['suit']): void {
   if (dingQuePending.value || !showDingQueChooser.value) {
     return
@@ -2887,6 +2949,10 @@ onBeforeUnmount(() => {
                 <span>人数</span>
                 <strong>{{ roomState.playerCount }}/{{ roomState.maxPlayers }}</strong>
               </div>
+              <div v-if="roundText" class="room-status-item">
+                <span>局数</span>
+                <strong>{{ roundText }}</strong>
+              </div>
               <div class="room-status-item">
                 <span>状态</span>
                 <strong>{{ roomStatusText }}</strong>
@@ -3062,6 +3128,52 @@ onBeforeUnmount(() => {
             <span>等待房主开始游戏</span>
           </div>
 
+          <div v-if="showSettlementOverlay" class="settlement-overlay">
+            <div class="settlement-panel">
+              <h2 class="settlement-title">
+                {{ isLastRound ? '最终结算' : `第 ${gameStore.currentRound} 局结算` }}
+              </h2>
+              <p v-if="gameStore.totalRounds > 0" class="settlement-round-info">
+                {{ gameStore.currentRound }} / {{ gameStore.totalRounds }} 局
+              </p>
+              <div class="settlement-list">
+                <div
+                    v-for="(item, index) in settlementPlayers"
+                    :key="item.playerId"
+                    class="settlement-row"
+                    :class="{ 'is-winner': item.isWinner, 'is-self': item.playerId === loggedInUserId }"
+                >
+                  <span class="settlement-rank">{{ index + 1 }}</span>
+                  <span class="settlement-name">
+                    {{ item.displayName }}
+                    <span v-if="item.isWinner" class="settlement-winner-badge">胡</span>
+                  </span>
+                  <span class="settlement-score" :class="{ 'is-positive': item.score > 0, 'is-negative': item.score < 0 }">
+                    {{ item.score > 0 ? '+' : '' }}{{ item.score }}
+                  </span>
+                </div>
+              </div>
+              <div class="settlement-actions">
+                <button
+                    v-if="!isLastRound"
+                    class="ready-toggle ready-toggle-inline settlement-btn"
+                    type="button"
+                    :disabled="nextRoundPending"
+                    @click="nextRound"
+                >
+                  <span class="ready-toggle-label">{{ nextRoundPending ? '准备中...' : '下一局' }}</span>
+                </button>
+                <button
+                    v-else
+                    class="ready-toggle ready-toggle-inline settlement-btn"
+                    type="button"
+                    @click="backHall"
+                >
+                  <span class="ready-toggle-label">返回大厅</span>
+                </button>
+              </div>
+            </div>
+          </div>
 
           <div class="bottom-control-panel">
             <div v-if="showDingQueChooser || showReadyToggle || showStartGameButton || selectedDiscardTile" class="bottom-action-bar">