feat: 商家卡片支持多图展示，点击左右切换带 crossfade 过渡

- Restaurant.image 改为 images: string[]，API 层从高德取最多 5 张图
- RestaurantCard 新增 ImageGallery：点击图片左右区域切换、顶部圆点指示器、
  左右箭头提示、首次查看时文字引导气泡（2.5s 自动消失）
- 图片切换使用 crossfade 动画（旧图渐隐 280ms），过渡平滑
- MatchResult / Profile 页面兼容新旧数据格式，无图时条件渲染

src/components/MatchResult.tsx

@@ -134,12 +134,14 @@ function RunnerUpCard({
       rel="noopener noreferrer"
       className="flex gap-3 rounded-xl bg-white/10 p-2.5 backdrop-blur-sm transition-colors hover:bg-white/20"
     >
-      <img
-        src={restaurant.image}
-        alt={restaurant.name}
-        className="h-16 w-16 shrink-0 rounded-lg object-cover"
-        referrerPolicy="no-referrer"
-      />
+      {restaurant.images?.[0] && (
+        <img
+          src={restaurant.images[0]}
+          alt={restaurant.name}
+          className="h-16 w-16 shrink-0 rounded-lg object-cover"
+          referrerPolicy="no-referrer"
+        />
+      )}
       <div className="flex min-w-0 flex-1 flex-col justify-center">
         <p className="truncate text-sm font-bold text-white">
           {restaurant.name}
@@ -348,12 +350,14 @@ export default function MatchResult({
           animate={{ y: 0, opacity: 1 }}
           transition={{ type: "spring", stiffness: 180, damping: 18, delay: 0.5 }}
         >
-          <img
-            src={restaurant.image}
-            alt={restaurant.name}
-            className="h-44 w-full object-cover"
-            referrerPolicy="no-referrer"
-          />
+          {restaurant.images?.[0] && (
+            <img
+              src={restaurant.images[0]}
+              alt={restaurant.name}
+              className="h-44 w-full object-cover"
+              referrerPolicy="no-referrer"
+            />
+          )}
           <div className="p-4">
             <div className="flex items-start justify-between gap-2">
               <h2 className="text-lg font-bold leading-tight text-zinc-900">