fix: 修复滑完后卡在等待状态的问题

- findBestMatch 不再返回 null，无人 like 时按评分兜底推荐
- 移除即时匹配的 users.length > 1 限制，支持单人房间

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

@@ -30,13 +30,11 @@ export async function GET(
     if (match) {
       matchType = "unanimous";
       matchLikes = data.users.length;
-    } else if (allFinished) {
+    } else if (allFinished && data.restaurants.length > 0) {
       const best = findBestMatch(data.likes, data.restaurants);
-      if (best) {
-        match = best.id;
-        matchType = "best";
-        matchLikes = best.likes;
-      }
+      match = best.id;
+      matchType = "best";
+      matchLikes = best.likes;
     }
 
     return NextResponse.json({
@@ -59,14 +57,13 @@ export async function GET(
 function findBestMatch(
   likes: Record<string, string[]>,
   restaurants: { id: string; rating: number }[],
-): { id: string; likes: number } | null {
-  let bestId: string | null = null;
+): { id: string; likes: number } {
+  let bestId = restaurants[0].id;
   let bestLikes = 0;
-  let bestRating = 0;
+  let bestRating = restaurants[0].rating;
 
   for (const r of restaurants) {
     const count = likes[r.id]?.length ?? 0;
-    if (count === 0) continue;
 
     if (
       count > bestLikes ||
@@ -78,6 +75,5 @@ function findBestMatch(
     }
   }
 
-  if (!bestId) return null;
   return { id: bestId, likes: bestLikes };
 }

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

@@ -28,10 +28,7 @@ export async function POST(
           data.likes[rid].push(userId);
         }
 
-        if (
-          data.users.length > 1 &&
-          data.likes[rid].length === data.users.length
-        ) {
+        if (data.likes[rid].length === data.users.length) {
           data.match = rid;
         }
       }