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/lib/buildRoomStatus.ts

@@ -67,6 +67,7 @@ export async function buildRoomStatus(
     locked: data.locked,
     users: data.users,
     userProfiles,
+    scene: data.scene,
   };
 }
 

src/lib/sceneConfig.ts

@@ -0,0 +1,77 @@
+import type { SceneType } from "@/types";
+
+export interface SceneConfig {
+  key: SceneType;
+  label: string;
+  emoji: string;
+  poiTypes: string;
+  defaultImage: string;
+  hotTags: readonly string[];
+  priceOptions: readonly { label: string; value: string }[];
+  tagLabel: string;
+  tagPlaceholder: string;
+  loadingText: string;
+  emptyError: string;
+  subtitle: string;
+  inviteText: string;
+  shareTitle: string;
+  shareText: string;
+  qrSubtitle: string;
+}
+
+const SCENE_CONFIGS: Record<SceneType, SceneConfig> = {
+  eat: {
+    key: "eat",
+    label: "吃什么",
+    emoji: "🍜",
+    poiTypes: "050000",
+    defaultImage:
+      "https://images.unsplash.com/photo-1517248135467-4c7edcad34c4?w=800&q=80",
+    hotTags: ["火锅", "日料", "烧烤", "西餐", "川菜", "咖啡甜品", "小吃快餐"],
+    priceOptions: [
+      { label: "不限", value: "any" },
+      { label: "¥50以下", value: "under50" },
+      { label: "¥50-100", value: "50to100" },
+      { label: "¥100+", value: "over100" },
+    ],
+    tagLabel: "美食",
+    tagPlaceholder: "想吃什么？（留空则不限）",
+    loadingText: "正在搜索周边美食...",
+    emptyError: "附近没有找到餐厅，试试扩大搜索范围或换个菜系",
+    subtitle: "和朋友一起滑卡片，再也不用纠结吃什么",
+    inviteText: "有人邀请你一起选餐厅",
+    shareTitle: "别说随便啦，来滑卡片决定吃什么！",
+    shareText: "我建好房间了，快点开链接一起选餐厅，滑中同一家就去吃！",
+    qrSubtitle: "让朋友扫码加入房间，一起滑卡片选餐厅",
+  },
+  drink: {
+    key: "drink",
+    label: "喝什么",
+    emoji: "🧋",
+    poiTypes: "050301|050302|050303|050400",
+    defaultImage:
+      "https://images.unsplash.com/photo-1556679343-c7306c1976bc?w=800&q=80",
+    hotTags: ["奶茶", "咖啡", "酒吧", "果茶", "甜品", "茶馆", "鸡尾酒"],
+    priceOptions: [
+      { label: "不限", value: "any" },
+      { label: "¥20以下", value: "under20" },
+      { label: "¥20-50", value: "20to50" },
+      { label: "¥50+", value: "over50" },
+    ],
+    tagLabel: "饮品",
+    tagPlaceholder: "想喝什么？（留空则不限）",
+    loadingText: "正在搜索周边饮品店...",
+    emptyError: "附近没有找到饮品店，试试扩大搜索范围或换个类型",
+    subtitle: "和朋友一起滑卡片，再也不用纠结喝什么",
+    inviteText: "有人邀请你一起选饮品店",
+    shareTitle: "别说随便啦，来滑卡片决定喝什么！",
+    shareText: "我建好房间了，快点开链接一起选店，滑中同一家就去喝！",
+    qrSubtitle: "让朋友扫码加入房间，一起滑卡片选店",
+  },
+};
+
+export const SCENES: SceneType[] = ["eat", "drink"];
+
+export function getSceneConfig(scene: SceneType): SceneConfig {
+  return SCENE_CONFIGS[scene];
+}

src/lib/store.ts

@@ -1,5 +1,5 @@
 import { prisma } from "./prisma";
-import { Restaurant } from "@/types";
+import { Restaurant, SceneType } from "@/types";
 
 const ROOM_TTL_MS = 24 * 60 * 60 * 1000; // 24 hours
 
@@ -12,6 +12,7 @@ export interface RoomData {
   creatorId: string;
   locked: boolean;
   kickedUsers: string[];
+  scene: SceneType;
 }
 
 function generateRoomId(): string {
@@ -28,6 +29,7 @@ function normalize(raw: Partial<RoomData>): RoomData {
     creatorId: raw.creatorId ?? "",
     locked: raw.locked ?? false,
     kickedUsers: raw.kickedUsers ?? [],
+    scene: raw.scene ?? "eat",
   };
 }
 
@@ -51,7 +53,7 @@ async function cleanupExpiredRooms() {
   }
 }
 
-export async function createRoom(restaurants: Restaurant[], creatorId: string): Promise<string> {
+export async function createRoom(restaurants: Restaurant[], creatorId: string, scene: SceneType = "eat"): Promise<string> {
   await cleanupExpiredRooms();
 
   const data: RoomData = {
@@ -63,6 +65,7 @@ export async function createRoom(restaurants: Restaurant[], creatorId: string):
     creatorId,
     locked: false,
     kickedUsers: [],
+    scene,
   };
 
   const expiresAt = new Date(Date.now() + ROOM_TTL_MS);