feat: best 匹配结果页展示 Top 3 候选排行，支持折叠查看备选餐厅

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

@@ -26,18 +26,20 @@ export async function GET(
     let match = data.match;
     let matchType: MatchType = null;
     let matchLikes = 0;
+    let runnerUps: { id: string; likes: number }[] = [];
 
     if (match) {
       matchType = "unanimous";
       matchLikes = data.users.length;
     } else if (allFinished && data.restaurants.length > 0) {
-      const best = findBestMatch(data.likes, data.restaurants);
-      if (best.likes > 0) {
-        match = best.id;
+      const ranked = rankRestaurants(data.likes, data.restaurants);
+      if (ranked[0].likes > 0) {
+        match = ranked[0].id;
         matchType = "best";
-        matchLikes = best.likes;
+        matchLikes = ranked[0].likes;
+        runnerUps = ranked.slice(1, 3).filter((r) => r.likes > 0);
       } else {
-        match = best.id;
+        match = ranked[0].id;
         matchType = "no_match";
         matchLikes = 0;
       }
@@ -56,6 +58,7 @@ export async function GET(
       match,
       matchType,
       matchLikes,
+      runnerUps,
       likeCounts,
       swipeCounts: data.swipeCounts,
       restaurants: data.restaurants,
@@ -69,26 +72,12 @@ export async function GET(
   }
 }
 
-function findBestMatch(
+function rankRestaurants(
   likes: Record<string, string[]>,
   restaurants: { id: string; rating: number }[],
-): { id: string; likes: number } {
-  let bestId = restaurants[0].id;
-  let bestLikes = 0;
-  let bestRating = restaurants[0].rating;
-
-  for (const r of restaurants) {
-    const count = likes[r.id]?.length ?? 0;
-
-    if (
-      count > bestLikes ||
-      (count === bestLikes && r.rating > bestRating)
-    ) {
-      bestId = r.id;
-      bestLikes = count;
-      bestRating = r.rating;
-    }
-  }
-
-  return { id: bestId, likes: bestLikes };
+): { id: string; likes: number }[] {
+  return restaurants
+    .map((r) => ({ id: r.id, likes: likes[r.id]?.length ?? 0, rating: r.rating }))
+    .sort((a, b) => b.likes - a.likes || b.rating - a.rating)
+    .map(({ id, likes: l }) => ({ id, likes: l }));
 }