feat: 实现 NoWhatever 别说随便餐厅决策 Web App

- Framer Motion 卡片滑动 UI，带物理阻尼动画
- 多人房间系统，4位房间号 + SWR 实时轮询
- 高德地图 POI v5 API 搜索附近餐厅
- Web Share API 一键邀请，剪贴板降级方案
- SQLite/Prisma 持久化存储
- 移动端优先响应式设计 (Tailwind CSS)

src/app/api/room/[id]/swipe/route.ts

@@ -0,0 +1,65 @@
+import { NextResponse } from "next/server";
+import { getRoomData, updateRoomData } from "@/lib/store";
+
+export async function POST(
+  req: Request,
+  { params }: { params: Promise<{ id: string }> },
+) {
+  const { id } = await params;
+
+  try {
+    const data = await getRoomData(id);
+
+    if (!data) {
+      return NextResponse.json(
+        { error: "房间不存在或已过期" },
+        { status: 404 },
+      );
+    }
+
+    const { userId, restaurantId, action } = await req.json();
+
+    if (!userId || restaurantId == null || !action) {
+      return NextResponse.json(
+        { error: "userId, restaurantId, and action are required" },
+        { status: 400 },
+      );
+    }
+
+    const rid = String(restaurantId);
+    let dirty = false;
+
+    if (action === "like") {
+      if (!data.likes[rid]) {
+        data.likes[rid] = [];
+      }
+      if (!data.likes[rid].includes(userId)) {
+        data.likes[rid].push(userId);
+        dirty = true;
+      }
+
+      if (
+        data.users.length > 1 &&
+        data.likes[rid].length === data.users.length
+      ) {
+        data.match = rid;
+        dirty = true;
+      }
+    }
+
+    if (dirty) {
+      await updateRoomData(id, data);
+    }
+
+    return NextResponse.json({
+      match: data.match,
+      likeCount: data.likes[rid]?.length ?? 0,
+    });
+  } catch (e) {
+    console.error("Failed to process swipe:", e);
+    return NextResponse.json(
+      { error: "操作失败" },
+      { status: 500 },
+    );
+  }
+}