fix: 刷新页面后恢复滑动进度，防止重复 swipe

服务端 GET room 返回 swipeCounts，前端据此恢复 currentIndex、
swipeHistory 和引导状态；swipe API 增加幂等性检查，跳过已滑过的卡片。

src/hooks/useRoomPolling.ts

@@ -30,6 +30,7 @@ export function useRoomPolling(roomId: string) {
     matchType: data?.matchType ?? null,
     matchLikes: data?.matchLikes ?? 0,
     likeCounts: data?.likeCounts ?? {},
+    swipeCounts: data?.swipeCounts ?? {},
     restaurants: data?.restaurants ?? [],
     isLoading,
     error,