feat: 新增「喝什么」场景，支持奶茶/咖啡/酒吧等饮品店搜索

引入场景系统(SceneType)，首页增加「吃什么」「喝什么」切换 Tab，
不同场景使用不同的高德 POI 类型、热门标签、价格区间和全链路文案。
场景信息存储在房间数据中，邀请/分享/匹配结果等页面自动适配。

src/components/SwipeDeck.tsx

@@ -6,7 +6,7 @@ import SwipeableCard from "./SwipeableCard";
 import ActionButtons from "./ActionButtons";
 import MatchResult from "./MatchResult";
 import SwipeGuide from "./SwipeGuide";
-import { Restaurant, SwipeDirection, MatchType, RunnerUp, UserProfile } from "@/types";
+import { Restaurant, SwipeDirection, MatchType, RunnerUp, UserProfile, SceneType } from "@/types";
 import { Heart, Undo2, Check } from "lucide-react";
 import { getAvatar, getAvatarBg } from "@/lib/avatars";
 
@@ -149,6 +149,7 @@ interface SwipeDeckProps {
   userProfiles: Record<string, UserProfile>;
   onReset: () => Promise<void>;
   onNarrow: (restaurantIds: string[]) => Promise<void>;
+  scene?: SceneType;
 }
 
 export default function SwipeDeck({
@@ -166,6 +167,7 @@ export default function SwipeDeck({
   userProfiles,
   onReset,
   onNarrow,
+  scene = "eat",
 }: SwipeDeckProps) {
   const [currentIndex, setCurrentIndex] = useState(initialIndex);
   const [showMatch, setShowMatch] = useState(false);
@@ -426,6 +428,7 @@ export default function SwipeDeck({
           onReset={handleReset}
           onNarrow={handleNarrow}
           resetting={resetting}
+          scene={scene}
         />
       )}
     </>